London Box Sash Windows Ltd

From our initial enquiry onwards, every aspect of getting our three new windows went smoothly. The estimator, surveyor and fitter were all caring, polite and efficient (as was the accounts manager who I only spoke to on the phone). Every effort was made to cause as little disruption as possible and protect to our rooms, carpets and furniture before work began. This work proceeded at a pace and by the end of day one (of three) two windows were already fitted. The windows are beautiful, bespoke made in the LBSC. factory but the architraves are cut on site by the fitter so perfectly fit each window. We got cheaper quotes but are so pleased we chose London Box Sash Windows Ltd. The professionalism, care and quality of the windows are brilliant. Thankyou to other Which Trusted Traders reviewers who helped us make the choice.

This is the second time we have used The London Box Sash Company. The first time was about two years ago. On both occasions they did a superb job with the fitting of new very high quality windows. The sound reduction has been remarkable. The property is a rented property and communications between us, the tenants and company and workmen were excellent, with quick and positive responses to any queries. From the survey they were able to give extremely helpful and knowledgeable advice for which we were very grateful. As a result we were able to make informed decisions at our own pace. They are, in fact, a pleasure to deal with. The schedule was adhered to strictly and to everyone's satisfaction. In short, I have no hesitation in highly recommending this excellent firm.

LBSW recently fitted 2 new double glazed box sash windows in our Victorian house. As we live on a busy road we opted for the acoustic glass in the front of the double glazed unit. We can really tell the difference already in terms of sound proofing. The windows are beautifully made. The fitter Andy was very professional. He kept everything clean and tidy and went the extra mile in making sure the details were right. All in all, a smooth experience from start to finish with good communication all along. I highly recommend.

London Box Sash Windows just completed the installation of our new, double glazed windows across our mid-terraced Victorian house. We couldn't be happier with the experience, from start to finish. Jake took a lot of time during the initial consultation, explaining the options available and impact on costs. We had four quotes in the end, roughly in the same price range and decided to go with LBSW due to their professionalism and responsiveness. Harry did the technical inspection pre-installation and Judith kept us updated throughout the process. At the scheduled day of installation, Audris arrived punctually (on the minute!) and his and David's work was spotless. They both worked extremely hard, precise and left every room they worked in tidy (we didn't have to do any cleaning ourselves!). Within a week, all our windows were done, in line with the promised timeline. We could really trust the team and go about our lives and just leave them with a key, which is a great feeling. Also, there was much less redecoration needed than we feared, thanks to the team's careful way of working. Choosing a firm to work with for new windows was a big decision for us, and I can only recommend LSBW. Our house is much warmer, quieter and with no more annoying draughts, we don't regret the investment for a second.

For some time we have been working towards replacing some sash windows in our large mid-Victorian semi-detached house so as to reduce draft, make some rooms warmer, make window opening easier and hopefully safe some energy cost. After visits by several companies, it was clear from the start that LBS offered a more personalised service and listened more carefully to what we actually wanted. They were the only company to offer sash-only replacement and the only one to point out that full frame replacement would cause problems where the window frame was integrated with shutters and a plaster cornice. All the pre-installation contact was great, with a very detailed on-site discussion of all the different options. A very detailed specification/estimate was sent for checking, and then a second survey by the fitting expert to iron out the last few potential glitches. The two fitters were brilliant, changing 8 windows in 4 days, arriving promptly for a 7.30am start, and meticulously clearing up dust and rubbish to leave the house in a very good state each day. On the final evening we immediately noticed the reduction in noise and draught, and the increased warmth. We would not hesitate to use LBS again and to recommend them to others. High quality full replacement of sash windows is not cheap, but we feel that we have installed an excellent product that has greatly enhanced the comfort of our home, that will last for many years, and that has increased its eventual sale value.

We have used London Box Sash 4 times - and their service levels have been superb each time. Great product, installed on time, everything left tidy. But best of all, our house is warmer and quieter thanks to the double glazing.

Very high quality windows. They make a massive insulation/ sound difference. The company is properly professional and easy to deal with. That is all great. The prompt to leave a review is however Audrius, a gentle mountain of an impressive craftsman, who did all the work so carefully and so swiftly. Bravo.

Having originally wanted one replacement sash window, we were so impressed with the quality of the one we ordered, we went on to order four more. The build quality , insulation and acoustic properties are excellent, and the style fits perfectly into our early Edwardian house. The service was always courteous, communication precise and regular, and the fitting itself carried out with great care and consideration. We are delighted with the windows, which have made a huge difference to our previously draughty home.

Got 4 windows installed by these guys almost 5 years ago. Needed two more windows but unfortunately they don't do these kind of windows anymore so I ordered somewhere. And now I can truly see difference between great windows installed by London Box Sash Windows and windows installed by someone else.

I had all of our front windows replaced with London Boxsash wooden sash windows and couldn't be more delighted. The window demonstration was really informative and I could tell from the start that the windows were far superior to any others I'd seen. The booking process was very smooth and the installation team were by far the most professional, fast and tidy I've ever witnessed. This isn't a cheap product but represents superb value for money. Thank you

From initial contact to completion everything for my new box sash window installation was a great customer experience. In fact the whole thing was enjoyable, stress free and the windows are fantastic.

We used London Box Sash a few years ago for our London flat and despite having since left London we recently decided to use them again to replace some original sash windows in our new house after having such a great experience previously. I’m delighted to say that their quality and craftsmanship has remained exceptional. The quality of their product is second to none, their windows are genuinely fantastic. Everything is very clearly explained upfront by the team (Jake, Harry and Judith are all fantastic) and their fitters are so courteous and thorough. Raf was our fitter this time around and he was so knowledgable and friendly. We honestly cannot recommend them enough.

We had a loft extension with double dormer mansard windows fitted about 10 years ago. The timber windows windows did not last very well and we were looking to replace them. I came across London Box Sash Windows work on a house where my company Complete Kitchens ( a fellow Which Trusted Trader member ) was fitting a kitchen. The customer happily gave me their contact details and after submitting drawing to them for provisional costings we arranged for Patrick to come along and do a full survey and provide final costings. We opted for the 50 year guaranteed hard wood sash windows, which although not a cheap product we wanted something that would stand the test of time. Because we already had a scaffold in place and we’re paying rent on the scaffold the team at London BoxSash even fitted us in earlier than expected which was a great help. We are very pleased with the end product and their friendly and expert fitters . Nothing was too much trouble . We would have no hesitation in recommending them to friends, family or future clients. A great job by a great company. Thank you London BoxSash.

The London Box Sash Window company were fantastic they fitted two sash windows and one small casement window to my house. From start to finish they were so professional and friendly, Judith in the office was excellent, Harry who carried out the survey was so knowledgeable and fitted the installations around our schedule. The actual fitters were real crafts men. The windows are beautiful.

We decided to replace all the sash windows in our drafty Victorian house to improve insulation and thus reduce energy use. As it was a significant financial investment for us, we researched it thoroughly and London Box Sash came out as front runners. We are delighted we went with them. From start to finish, their service was highly professional and completely reliable. All of the staff from sales to installation were courteous and a pleasure to deal with. They explained the process fully and there were no nasty surprises. The installation team were amazing. They replaced 13 separate sashes in just four days. The windows look and feel very smart. Our house immediately feels warmer. We can now turn the heating off completely during the day. The degree of sound insulation is an unexpected pleasure too. I would definitely recommend this company.

We were recommended London Box Sash Window Company by our next-door neighbour and what a recommendation. The whole process from start to finish was excellent and the estimating installing and payment process was first class. The two large sash windows installed in our 1904 Edwardian house are very good indeed and the panes move up and down so smoothly and effortlessly. Already notice a huge difference in heat retention and noise attenuation. What more can I say except to mention our installer who single-handed put up and took down the huge dust curtains, set up a small workshop and in between installed the box sashes and touched up the paintwork. He worked a hugely long day but was always courteous - an amazingly skilful and conscientious technician. I highly recommend this company and their product. You will not be disappointed.

We are in the process of ‘future-proofing’ our home - let’s face it, with the rising cost of utilities, this is fast becoming a priority. We live in a flat in an old Victorian house with large, single-glazed, sash windows, several of which needed replacing, but deciding what with, was always going to be tricky; plastic windows would obviously be cheaper, but wouldn’t be in keeping with the house and so we looked around at who was making wood sash windows. There is no doubt that this is an expensive route to take, but given how long they last once they’re in, to not do it right first time seemed a false economy. We have so far replaced two windows with TBSW company and you really do get what you pay for; from the start and our first contact with them, we felt confident that we were dealing with people who knew what they were talking about, cared about what they did and were hugely positive about their product and justifiably - the windows are superb. Large, double glazed units that immediately cut the heat loss and sound from the outside and because of the perfectly balanced weights, can be raised and lowered with finger-tip control. The finish is beautiful and totally in keeping with the house. The care and precision with which their fitters worked - the place was spotless when they left - belies the amount of work involved and all the work is guaranteed. It has been a pleasure dealing with them.

I knew my windows and French Doors needed replacing to halt water penetration but the thought of work and mess of 2 large bay windows and doors being replaced filled me with dread. It need not have. From the initial measuring up, quote and work being carried out, the process was smooth. More so the work itself. There were no issues with the windows actually fitting and the installers were incredibly professional and efficient. My only job was coffee making and glad to do it. Plus the materials are first class. If you need this type of work done, seriously consider London Box Sash.

This is now the second time I have purchased windows from London Box Sash. The first window was two years ago and it still looks brand new. The service from London Box Sash is one of the best customer service experiences I have received. The quality of the product is also better than anything else out there on the market. The windows that we chose are Accoya timber, double glazed windows. Which were to replace our single glazed drafty original windows. We wanted to keep the character of the Victorian property but update to energy efficient windows. I would definitely recommend London Box Sash, you won’t be disappointed. Thanks

London Box Sash Windows replaced 6 single glazed windows in our Victorian terrace in Herne Hill with new double glazed wooden sash windows. They were the most competitive and transparent of the 3 quotes we got and the whole process was seamless from start to finish. From the initial visit from Jake, through the booking and billing process with Judith, we were impressed with their prompt responses and helpful attitude. The lead time we were given was spot on and, once we were given a date for the work to start, this did not slip. Audrius, who carried out the work, was hardworking, punctual, efficient and left the house spotless each evening. We couldn’t believe the quality of his work. We barely needed any touching up work from the decorator we had booked to help us afterwards. 6 windows were replaced and decorated in only 4 days, with minimum mess and disruption. Our house is now smarter, quieter and noticeably warmer.

'London Box Sash Windows Ltd.' clearly stood out as the obvious choice out of a number of other candidate companies for the replacement of three single glazed sash windows with new double glazed ones, in a four storey Georgian property within the London East Canonbury conservation area, in terms of the high quality of materials used, the great safety design features employed, the excellent guarantees offered and their very competitive pricing. The manufacturing waiting time was as planned and the installation was perfect. Overall excellent!

I can only echo all the favourable comments in the other reviews for London Box Sash Windows. Our job was a replacement of sash windows and French doors at the rear of the house in Belsize Park (built-in 1860), including two very large windows (ceiling height is 12ft 6 inches). The job was done super efficiently in only two and a half days with the guys arriving on the dot each day. The finished result is immaculate and an exact copy of the old original sash windows. During the job the working area was fully isolated by a polythene 'tent' - so no dust spreading everywhere and all left neat and tidy each day. Thanks also to the friendly office staff and the original estimator - very easy to deal with. So, overall full marks - we're looking forward to a much cosier winter!

After much research we chose London Box Sash Windows to do the bespoke windows and rear doors on our house in Chiswick. We chose them as they seemed very in tune with how to match window style in older property, which ours is. Frankly after installation we were blown away by how good they looked and the attention to detail on installation and making good. Rooms already warmer! The process has been very pleasant and I can’t speak too highly of Jake, the initial estimator we had, the team that followed through. Especially mention to the installation guys who were very professional and really spent time checking on the finishing touches I have no problem recommending them to anyone.

I don’t usually leave reviews but wanted to make an exception for London Box Sash. The whole team was fantastic from initial enquiry and sales to fitting to after-care and billing. We had all of the sash windows in our Victorian terrace replaced and although it felt like a huge outlay (these guys are very competitive though) once the windows were fitted you I was very happy we had decided to provide proceed. The quality and workmanship is incredible and the windows look absolutely fantastic. I highly recommend these guys - I can not fault them. Thank you to the entire team.

We had read previous positive reviews of London Box Sash Windows on the Which? Trusted Trader site and they had been highly recommended by a neighbour who had had work done by them recently. In our experience, those recommendations and reviews are accurate and well deserved. We had two large bay windows at the front of our Victorian terraced house replaced and also two smaller windows at the back. The company also installed plantation-style shutters on most of those windows. It was a big job, done right on schedule and right on budget. Judith kept us well informed prior to installation. Jasper, David, and Rafal arrived punctually and were friendly and courteous throughout the five days they were with us. Their work was carried out professionally and to a high standard. They cleaned up scrupulously at the end of each day. Their attention to detail and finish, internally and externally, was excellent - they really did go above and beyond to make everything just the way we wanted it: we are delighted with our new windows and shutters. We would wholeheartedly recommend London Box Sash.

The sash windows that I had installed almost two years ago, still work beautifully and receive many admiring comments. The double-glazing and noise-cancelling (acoustic) glass has made such a positive difference. Everyone I dealt with from the firm was professional, friendly and helpful. Overall, the installation process went smoothly from start to finish and any anticipated changes were drawn to my attention well in advance. I needed a copy of the guarantee and FENSA details, so contacted London Box Sash Windows the other day. They swiftly sent me the information, so having been impressed with both the initial installation and the follow-up support, I’ve just recommended the firm to a friend.

This company was recommended by friends who had French doors fitted. We got several quotes for a large picture window and London Box Sash were prompt, friendly and efficient. They offered a really high quality product at a reasonable price including a discount if you chose to wait for a last minute opening for installation. The installation was incredibly well organised, everyone at the company was very helpful. The picture window is fabulous, just what we wanted.

We had the front windows done by LBS in 2016 and just had 2 replaced in July 2021. Very happy with installation and the quality of the windows. Indeed, recent changes to design have improved them further. Judith, Patrick and Aud were always responsible and courteous. Aud our installer was very tidy and efficient. There are cheaper options out there though we think the quality is worth the investment. Thanks again.

This is the second time we've got our windows and French doors from London Box Sash & the quality, service and finished result were all fantastic again. From the initial meeting where Jack helped us with deciding the best designs to restore the character of the property to Patrick and the fitters working with our building team on delays and final finishing details everyone was friendly, professional & worked to get the job done. We are so pleased with windows and doors and should we ever tackle another project wouldn't hesitate to use London Box Sash again.

We are very pleased with our new windows, which looks stunning! The team at London Box Sash windows were very knowledgeable, professional, organised, approachable, and did a fantastic job making and installing all of our house new windows. The Accoya wood windows looks amazing and they are truly the Ferrari of any window you can get! We got a good deal with them as well, as we signed up for the flexible order option (as were not in a rush to have them installed at a specific date). The window fitter was also hard working, tidy, and pleasant to work with. We highly recommend this company to anyone considering fixing or replacing their box sash windows.

So pleased with the window. As a team London Box Sash windows were highly professional, good timekeeping, approachable, and did a fantastic job changing my window. I feel as though I went from having an Old Banger to Bentley! The window fitter was extremely hard working, tidy, and pleasant to have in my home. I highly recommend this company to anyone considering fixing or replacing their box sash windows.

This is the third time we have used London Box Sash Windows and are very happy with the Company. We moved into a new flat in September and had a cold winter as the previous French doors were over a 100 years old, single glazed and poorly insulated. The new French doors installed by London Box Sash Windows have transformed our dining room in many ways. The design was made to match the Victorian character of the house and the new French doors are beautiful, they have really enhanced the room. We have instantly notice a huge improvement in soundproofing. We can't hear any noise at all when the doors are closed. We feel a lot safer, the doors are robust whereas the previous one was quite fragile and we used to worry about people breaking in. We haven't tested the impact on heating and energy consumption yet as it is the summer now, but we can no longer feel the draft that was previously coming through the old French doors, so we think we will be a lot warmer this winter. So, yes, very happy with the quality of our new French doors and also very happy with the team at London Box Sash Windows. They are very friendly, respectful, reliable, came on time, left the flat spotless and were wearing masks. We recommend London Box Sash Windows 100%!

We're really happy with our new sash window. Our choices were well explained and we weren't pressured into making a decision. The team at LBSW were great start to finish. Big thank you to Jake for handling all our questions, and Raf who was superb when fitting the window. Quick, extremely tidy and very polite/courteous. Great to support a local business in the Tulse Hill area.

London Box Sash Windows recently replaced all the original sash windows in our Edwardian terraced home which offered almost no insulation from noise and draughts. From start to finish the experience was excellent, from pre-sale (with no hard sell tactics) through to fitting (efficient, clean and tidy) we were kept fully informed at every stage and the level of knowledge, experience, attention to detail and workmanship was second to none. The windows fit perfectly, look stunning and are in keeping with the age of the property. Additionally, the anticipated reduction in noise pollution and improved heat retention have not disappointed in the slightest. The installation team were also able to reinstate our existing shutters as an added bonus. All in all, we have no hesitation in highly recommending London Box Sash Windows and the team (Judith, Jake, Patrick, Audrius, Ramanus and Raf) to anyone looking for replacement windows.

As the guys were working on our bay windows downstairs I sat in my bedroom on a work call. I could not stop staring at our new replacement window which had been installed the previous day, and I mailed Judith to tell her that. It's such a difference, even setting aside any notion of resale value. The benefit to the look of the property inside and out is immediate. Other benefits like energy efficiency, noise reduction, and lack of condensation seem like icing on the cake. It's as though I feel more at home just standing in a room and looking out. The guys are very considerate and do a great job keeping the mess under control. The service is not cheap, but it's very good value. I feel good having spent the money. I intend to engage them again for plantation shutters, which I'm told they can do on their installed windows without needing to measure up.

We had used London Box Sash Windows a few years ago and were very happy with the job so we called them again to change the windows of our new flat as they were very old and single glazed. The quality of the new double glazed windows London Box Sash Windows made and fitted for us is excellent. The team were very nice and professional. They used protective sheets and left our flat spotless, despite the job creating a lot of dust. The day after the windows were fitted we noticed some minor fixing that was needed. The Company came back after a few days and fixed the job with no fuss, which we much appreciated. Something worth mentioning as well is they strictly comply with the covid rules, they all wore masks at all times when walking in the flat and we felt safe having them around to replace our windows despite the pandemic. We would definitely recommend London Box Sash Windows to friends & family.

I had the front windows replaced to my property. I’d previously used London Box Sash to replace the rear windows 6 years before, which I’d been very pleased with. Excellent service throughout the whole process from quoting through surveying and fitting. Everyone I encountered was very helpful and easily able to answer any questions and kept a professional yet friendly service. They played great attention to detail to ensure a match with the existing windows. Fitting was carried out efficiently, kept pristine cleanliness and tidiness throughout providing full protection of my belongings in the process. Kept me informed of details as the work to fit was carried out, no surprises along the way. The finished windows give an excellent level of noise reduction and immediately noticed the difference to temperature from the old windows. They are incredibly smart, fitting in very well with the Victorian property and period features.

We had an excellent experience with London Box Sash Windows - installing double glazed windows in our terraced home. From the start, the team were friendly and helpful - they obviously knew their stuff and took the time to chat through all the potential options and finer details. When it came to doing the actual work, the team were super - they were polite, very respectful in terms of being in our home (particularly during COVID-19 times) and helpful in terms of prepping rooms for work. The quality of the work they did was superb - the windows look lovely (and they work!), and the additional effort to get the small details right was so appreciated. We were so pleased! Would certainly recommend LBS for anyone that was exploring getting similar work done.

Andy came on time it was a 3 day job his work was exceptional he asked me when he had to fit the windows to make sure I would be happy with the the look as like all old property windows not the same size.Right from the first talk with the company I was so impressed with whole way my order was completed .Andy made sure plastic covered my furniture and each night cleaned away. I took pictures of the windows sent them to all my family as the could not visit because I am so impressed with them.

They changed all the window in my house and I couldn’t be happier. Their quote was competitive and the quality and finish of the work was great. I have a mixture of sash and casement windows and they all match perfectly. The fitters were very tidy, took a lot of care minimising damage and worked around a couple any issues they came up against. Highly recommend.

London Box Sash Windows replaced two old and rotting sash windows at the top of my property. From the first home visit they were polite, friendly, professional and clear about pricing and timings. I had a full list of contacts and regular communication from the office. Andy was the installer and did a brilliant job over two long days to replace the windows, including removing and replacing the existing shutters and working with wonky Victorian walls! He covered and protected the rest of the room and the house, and cleaned up thoroughly before he left. First rate team from start to finish - would highly recommend.

We asked London Box Sash Windows to replace all the windows in our Victorian terrace house in London. Jack, Patrick and the team were incredibly knowledgeable and spent time talking us through our options, explaining the history of the business as well as the specifications for the windows. The windows themselves are beautifully crafted and finished, operate very smoothly and feel incredibly secure. They have been complimented by many people. The glass used in the bathroom window is particularly special and in-keeping with the age of the property. Installation was efficient and took place well within the original schedule we had anticipated. We had recently replastered and no damage was caused to the new plasterwork. We had regular email and phone communication with the team throughout the process who were on hand to answer all our questions. We are delighted with the windows and with the service provided. We were pleased to be able to support a local family business. They come highly recommended.

I couldn't be happier with my new sash windows and French doors. The quality of the design, workmanship and materials is excellent, the communication and general service are also just as good. It's always nice to use a family company too - Jack and Patrick run a professional and friendly outfit. They took considerable time to help me design really stunning French doors and were really flexible when it came to installation requirements. I'm kicking myself that I didn't find this company earlier - I used an alternative sash window specialist company to fit some windows just after moving, the quality is just not nearly as good despite them being more expensive.

We have just had seven windows replaced, including a bay window, in our (1906 built) house by London Box Sash Windows Ltd .We are absolutely thrilled with the finished work. Simply cannot fault a single aspect! The quality and finish is stunning and has greatly improved the curb appeal and heat efficiency etc of our property. However, what has been most impressive is the professionalism of everyone we dealt with. Jack and Patrick have clearly picked up the mantle from their Father and continue to deliver a top quality product and exceptional service for every customer. The administrative side was straightforward and excellently handled by Judith. Angelo and Raf are the most outstanding workmen we have ever had in our house! Angelo walked in with a small tool box on the first day, proceeded to cover every surface and carpet with protective sheets. Then brought in a whole workshop of tools and equipment and then worked very hard and non-stop with an attitude of pride and concern for his work. On the last day, he walked out with the same small toolbox and no-one would ever be able to tell that they had been here! - apart from the wonderful windows they installed! It was a total pleasure to meet them both and a joy to have them working in our house. We have no hesitation in recommending London Box Sash Windows Ltd.

I recently used London Box Sash Windows to replace the bay windows and French doors at my Victorian-age property. Having received quotes from a number of local & nationwide firms, I am delighted that I went for LBSW. From the initial consultation through to final installation, every one I dealt with was extremely professional, personable and highly-skilled. They take real pride in their work and it shows. I would recommend them without any hesitation.

We used London Box Sash Windows on our renovation and they were fantastic. Punctual, efficient, clean, courteous and friendly. They were always willing to help and assist and go beyond to deliver a quality product and service. We were let down by other trades a lot during our renovation but London Box Sash were fantastic to work with - never had a problem. I am so glad that I went with them over their competitors as they have really looked after us and treated our job with utmost attention. I will definitely use them again and recommend them to anyone looking for a premium product. I have not used the other companies out there but I doubt they will be able to deliver the same service.

We replaced all seven windows in our house, one of which was a bay window. We bought the 'top of the line' as we do not want to replace them again. The windows operate perfectly, the noise reduction is marked (and this was replacing secondary glazing). The fittings operate smoothly and the windows look beautiful. The workmanship and quality cannot be faulted and the work was carried out efficiently and on time. I wish everybody one deals with was like this. Great job.

I would like to take this opportunity to Thank everyone at LBSW. The level of service and professionalism I received throughout the process was exemplary. Jack at the initial sales consultation, Patrick for the survey and finally the most accommodating, friendly skilled craftsman in Audi. We are so pleased with transformation the windows have made to our property. If you are in the process of researching what company to appoint for your windows/Doors like I was - I spoke to most of them and we could not have had a better result. LBSW are a local family business and this shows throughout in their passion and personal approach to the full process.

London Box Sash overall did an excellent job in my opinion. Their billing process and costs estimates were spot on and thoroughly discussed in advance. The guys who came to measure up and undertake the fitting were also bang on time, quick, helpful and polite, and we're happy to chat through minor practical issues and even suggestions on other things (window security) etc while there. Overall, money well spent and I'd definitely use them in future myself on another possible job in the house, and recommend them to others.

We are so impressed with London Box Sash Windows installation of a new sash window for us, the window itself is stunning and dealing with everyone at the company has been a pleasure. We got the recommendation for London Box Sash Windows from our neighbourhood Nextdoor network and not only were they the most friendly, polite, pragmatic and responsive, but also the most reasonably priced of a number of companies we contacted. We were impressed from the initial consultation with Jack who carefully checked what we wanted and offered a range of options, through the technical check by his brother Patrick and finally a superb installation by Anjelo, with support at all stages from Judith in the office. We just had the one window installed but Jack was very flexible to arrange this just how we wanted, both in terms of price and how quickly the install could be arranged, with this being much earlier than the competition, four months so in one case. We totally recommend London Box Sash Windows and won’t hesitate to use them again.

We cannot find a single fault in any of our dealings with London Box Sash Windows. The first meeting with Jake, who came to measure up and give us a quote, was very impressive. There was no heavy selling and he explained everything in very clear and easy to understand detail. My wife and I were very impressed by the full sized display sash window he brought with him to explain all the features. The fitters, Ramanus and Audrius, turned up on the dot every day ( beware the early starts!!) and never stopped working until they left at the end of the day. They left absolutely no mess so all we had to do each evening was to put the furniture back. We were slightly sceptical when told that there would be little damage to any internal decoration, and so were amazed at how little re-touching was needed to paintwork around the windows. The windows are brilliant and I’m actually looking forward to a cold winter as I know we will be draft-free and will have a smaller heating bill!

We have been considering replacing our windows for a while when we noticed our neighbours had their bay windows fitted by London Box Sash Windows. We asked for the details and were soon contacted by Jack who came and explained the process and the technology involved in the production of their windows. We also had a couple of other companies providing estimates, but after seeing the quality of their windows we decided to proceed with London Box Sash Windows, due to their superior finish and design. Soon after, Patrick came to take the measurements and arranged the date to our convenience. The work proceeded as agreed and our fitters Anjelo and Rafal arrived early one morning as arranged and explained in great detail all the stages of their work. They were both very polite, clear and punctual, starting early and working quietly without taking frequent breaks or phone calls. They protected all the furnishings and at the end of the day left their tools and working area in a very tidy state. The fitting of two bay windows and one single window took two days and the result was more than satisfactory. Our windows are beautiful to look at and incredibly well designed and engineered. The rooms are now very quiet and we can no longer feel the drought or hear the window panes rattling when the weather turns windy. We truly recommend this company to anyone who is considering investing into improving their homes by their fabulous products.

Jack, Judith, Patrick and the team were amazing from start to finish. No hard sell, a fair market price and delivered on time. Ramunas and Audrius did a fabulous job installing the windows. They were hard working, friendly and cleaned up after themselves. They even fixed some of the remedial damage and poor workmanship left over from the fitting of the previous windows 25 years ago! The plantation shutters are just as good as the sash windows. Our Victorian house is now back to its old former glory. Great customer service, fantastic quality, and good value for money. London Box Sash Windows come highly recommended.

I was truly worried about the old wooden windows in our wonderful Victorian House. They were not energy efficient and urgently needed a makeover. Gladly one of our friends who had her flat windows replaced recently, recommended London Box Sash Window Ltd to us. So instead of starting costly renovations (including erecting scaffolding), we got in touch with them and the result is truly stunning. London Box Sash Window Ltd. has fitted our house with new double glazing wooden sash windows. They look beautiful and I cannot thank the team enough for providing an excellent product and a fantastic, caring and reliable service from the start until the finish. It is such an improvement of our house and the wooden windows also ensure that the “character” of our home is kept. Happy with this fab experience.

We researched and met with various vendors over a year before selecting London Box Sash Windows Ltd to replace 5 windows in keeping with the original design of our Victorian house. What immediately struck us as different about this company was their well-mannered approach- there was no aggressive sales pitch or money off if you sign up on the spot with these guys. Instead, a young man called Jack came to see us one evening and genuinely listened to our requirements. He, took us through various alternatives to consider and made himself available whenever we needed guidance for a number of days. His brother Patrick helped us design the right kind of shutters for these windows and ordering both items from the same company resulted in substantial time and price efficiencies for us. Installations were carried out by Andy and Raf- again, couple of very fast working young individuals who did not leave any mess and was a pleasure to work with. Judith kept us right with the admin and again was a delight to deal with-always willing and able to help. Any one reading this should do their research, we are glad we did ours and came across a local honest business which was able to trump national competitors in price, carbon foot print and installation time. I heard this family business was started up by Jack’s father-our heartfelt congratulations goes out to him for bringing up his son’s so well and enriching customer experience through first class service and excellent staff.

London Box Sash Windows Ltd just replaced all the old, drafty single glazed sash windows in our Victorian terrace 2 bed with double glazed sash windows throughout plus a casement in the kitchen. Of the four initial quotes requested, LBSW were definitely the most helpful, clearly explaining all the various options without any hard sell whatsoever. Their workmen were faultless - arrived promptly, worked solidly and left the place cleaner than they found it! As the casement window was a last minute addition, we hadn’t discussed which fasteners & stays we would prefer. We weren’t very keen on the ones that were supplied so they were exchanged without any quibbling for the ones we much preferred. The quality of the windows and woodwork is exceptional. Not only do they look great, the difference in heat retention and noise reduction is incredible. I really couldn’t recommend this company more highly, so impressed with them.

We did a complete refurbishment of our Victorian terraced house in 2017 and London Box Sash replaced all of our windows. We couldn't be happier with the result. The windows look fantastic and work so smoothly - I still get a buzz when I open the blinds in the morning and see their workmanship. Dealing with so many different tradespeople on a refurbishment of that kind, London Box Sash were head and shoulders above all the firms we encountered. They thoroughly explained the different options we had, were competitive on price, as flexible as they could be with the installation and did a wonderful job to such a high standard (we have had so many compliments). They worked quickly and efficiently and when there were tiny issues with a few things after installation they remedied them straight away. I just wish more companies had such high standards and customer service. It was a pleasure dealing with them in every regard and I wouldn't hesitate to recommend them.

My 1901 house had draughty original sash windows with 2mm glass. I had 11 sash windows and one panel above the front door replaced. Recommended by 3 neighbours whose windows I viewed before contactiing LBSW. After suffering the trauma of hard sell by another company I was relieved by the relaxed but informative response of Jack and Patrick. After they patiently answered all my questions I was aware of each stage of the process. Jack said it would take 10-14 days and it actually took 8. Andy arrived at 7am every morning and removed and replaced 3 windows on the first day. Furniture movement was minimal and well protected. All rubbish was removed at the end of each day and the room left tidy and dust free. The bathroom window was tricky to negotiate around a basin and tiling but each stage was discussed . Andy, mindful of my privacy replaced the bathroom roller blind on the day of its fitting , not within his remit but very impressive. My design on the glass panel above the door was agreed with Jack who made every effort to get my sandblasted house number and its placement exactly as requested. Neighbours keep saying how beautiful the windows are and subsequent workmen in the house have said how high the level of workman ship is. One tiny blip with a window was fixed by Jack himself who also took photos. Security is now very efficient with various locks so I feel safe and warm with the house being much quieter. Very happy.

I'm a managing trustee of a religious meeting house and fundraised for years for timber casement double glazing for the front elevation of our building located in a conservation area--so I had to find a windows company that would deliver long term value for us. London Box Sash created and fitted the most beautiful windows for us, and everyone who uses the building is delighted with their beauty and performance (a much quieter and warmer interior). They took responsibility for the entire process, which was a relief to me, and the long guarantee is very reassuring. They were delightful to work with at every stage. I especially appreciate the care the fitters took with protecting the building as they worked. We will use London Box Sash again and I highly recommend them.

Good price and the window they installed for me looks fantastic. Was done in exactly the time suggested and for a competitive price. Everyone was very professional and responsive and the process was extremely easy.

London Box Sash replaced several window casements and two French Doors in my lounge, as well as several casements in the bedroom. The whole service from beginning to end was timely, courteous, and professional. Discussing my different options was not straightforward as I was only replacing casements that needed repairing, and I received good honest advice at this stage. The process from initial consultation to instalment was great, with clear communication at each stage and London Box Sash happy to help me with any details etc. Fitting was also an excellent experience: the workman turned up on time (early in fact!), cracked on with the job, and completed all the work to a very high quality and ahead of schedule. Only one small snagging issue was dealt with straight away and with the minimum of fuss. Would recommend to all without hesitation.

Super happy with the sash windows and the craftsmanship. They made the whole process really easy, windows are superb, and the installation smooth with great attention to detail. Thoroughly recommend.

London Box Sash were commissioned to build and replace the old wooden single glazed sash windows in our old Victorian house. I was torn between trying to give the old ones a few years of life or just getting new ones. After visiting their premises and trying out a sample of what my potential future windows could be, I knew at that point that any doubts i had were gone. The staff were great, helpful and answered all our questions and the final product is something that I marvel at every day. Will see how they fare through the winter but I'm sure that I'm going to have a cosier, draft free one. Hats off to Andy for such a great install, super tidy and knows his stuff. Would certainly recommend!

I was impressed with the London Box sash window from the initial contact. The surveys were carried out by approachable and personable people who listened carefully to our needs. The price was competitive when compared to similar companies. The installation team showed amazing attention to detailed working with the minimum of disruption taking great care to minimise mess. I was consulted by them at every stage of the installation. The finished widows are excellent. The house is quieter, warmer and looks a lot better. I would strongly recommend the company to anyone looking for a high quality product to enhance their home.

Love the new windows. Very pleasant and professional team to deal with. Fitter was very efficient and as tidy as we could have hoped for.

I could not be more pleased with my new windows, or with the service I received. Jack and Patrick were absolutely lovely to deal with, gave me no pressure to proceed and were genuinely interested in solving the terrible condensation I was experiencing on my old windows. My fitter was called Audi, and he worked really hard to get my new windows in, paint them and put everything back in place. It's been a huge relief to get the job done, it was so straightforward and now I have some beautiful, functioning windows that look fantastic and keep my house warm. Absolutely fabulous!

This was an extraordinarily satisfying process. Patrick and Jack were very helpful and thorough in the planning stage for replacing three of our sash windows. The design was excellent. The quality of the windows and woodwork was perfect. As for Anjelo our fitter… he was so considerate, courteous and such a good worker. Boy did he work long hours to make sure everything was perfect as well. This is a genuine, heartfelt 100% recommendation. We look forward to booking you again!

We recently had the sash window at the front of our cottage replaced by London Box Sash Windows and it looks fantastic. The quality of the frame is excellent. The service we've received throughout was great and the fitting was efficient and hassle free.

I would highly recommend London Box Sash windows. From the initial detailed consultation with Jack, the comprehensive survey with Patrick, speaking to Judith in the office, to Mark and Angelo who made the installation straight forward and easy, this is a family company who obviously take pride in their product and the high quality service they provide. The four upstairs windows, French door and large ground floor bay window they installed not only look fantastic but have already made such a difference to the warmth in our house. Although a few issues did arise with the French doors, these were dealt with quickly, professionally and to our complete satisfaction. Both Mark and Angelo were extremely considerate around our newly decorated property which we much appreciated. I would have no hesitation in recommending London Box Sash and intend to use them again in the future to complete the rest of my windows. Thank you so much Jack, Patrick and all the team at London Box Sash.

Really impressed. From the initial quote to the final installation London Box Sash were flawless. We had a large bay window in our London flat and are delighted with the final product. Has hugely improved the sound and heat insulation, not to mention looks amazing. We had quotes from a number of competitors and are delighted we went with London Box Sash. Would 100% recommend.

We’ve just had all our Victorian sash windows replaced - 9 windows, two of which are large bays. A major piece of work in a busy household of six people ranging in age from 76 to six years old. London Box Sash Windows could not have been more accommodating and helpful. A small glitch at the start of the work was dealt with immediately and professionally. The window fitters could not have been more friendly and helpful. The end result is excellent and completely in keeping with the Victorian features of the house. What could have been a messy and very disruptive experience was warm and professional with a high quality end product and all within the time frame. I thoroughly recommend this company.

The initial consultation with Jack was great. He was polite, highly knowledgeable, very informative and not at all pushy. He offered various options for the wood/glass type to the final design. Although by no means the cheapest, both the high quality of the product and their experience means they are good value. The fitter, Andy, worked incredibly hard and obviously was highly experienced. He was also friendly and took pride in his work. The finished product looks great. I was also surprised how tidy everywhere was when Andy finished. I highly recommend London Box Sash.

We have had seven windows and a single patio door replaced by London Box Sash over the last four months, in two batches. We would recommend them without reservation to anyone who wants to pay a bit extra for premium quality. The range of choices available is clearly explained with no pressure to buy any particular product, and every question we had was factually answered to our satisfaction. Booking fitting dates was stress-free and flexible, and if you can go with their standby schedule you can get a bit of a discount. The installation was professionally done, and most important of all, the quality of the product is lovely - with just the right combination of traditional appearance and modern technology (sound proofing, heat insulation, anti-condensation, long-lasting treated wood that doesn't expand etc), tailored to your particular choices. The people we dealt with (Jack, Patrick and Judith) were all pleasant and efficient, and it is lovely to see that a family-run company can compete successfully in this market. They deserve to flourish, and we thoroughly recommend them.

We replaced all the windows of our property with London Box Sash Windows and they not only provided an excellent product of superb quality but an outstanding customer service too. They were very flexible with our timings. Turned up on time every morning and left the property spotless each day and completed the job on time. Since the windows were fitted we have received various great and positive comments from neighbours and friends about them! We would definitely recommend them and with no doubt would hire them again. A fantastic team!

I had four replacement sash windows fitted in the autumn having had others replaced previously by another company. There really is no comparison - both in the quality of the product and the customer service. All the staff at London Box Sash Windows are friendly, reliable and do a great job. The guys that came and fitted the windows were always on time, were respectful of my home and cleared up very well. The windows have made a real difference to the warmth of my home over the winter. I have no hesitation in recommending this company.

We could not rate London Box Sash highly enough. No hard sell, offer a high-quality product that you pay a little more for (as opposed to refurbishing existing windows, which was our original preference) but in our view, well worth the investment. Jack and Patrick clearly love what they do and made the whole experience a pleasure. They understood that new windows were a real investment for us and at no point did we ever feel we were given pressured into making a decision, and we were very patient with answering questions and their explanations. Our windows look beautiful and operate wonderfully. The whole process was great, the initial decision on which specification to installation. We were kept informed on lead times and it was never difficult to reach out and have questions answered. Andy, our fitter, was efficient, took care with the install, sealed off the rooms properly so the dust in the rest of the house was kept to a minimum. He takes real pride in his work and it really shows through in the windows. He discovered problems with the lintel above the bay window, but took initiative to resolve rather than turning it into an issue. Couldn't recommend highly enough.

I had 4x new sash windows fitted at my flat in Balham and I can't speak highly enough about my experience with London Box Sash. From start to finish they were true professionals. Patrick and Jack did a great job measuring up and talking me through the various options, and I never felt under pressure. When it was time for the installation both their fitters (Andy & Anjelo) were first class. They protected the carpet in the entire communal hallway, dust-sheeted everywhere and when they left the flat was spotless. Great guys and never thought twice about handing them the keys. The product itself is perfect - really nicely weighted sash movement, great paint finish and I'm told the Accoya wood is incredibly durable. Patrick told me that cleaning the windows would be easy, because of the texture and quality of the Accoya, all I would need was a good quality shammy and any stains would come off with tap water. With that quality obviously comes a price, and as Jack will tell you these aren't cheap windows. Having lived with them for the last four months, the quality fully justifies the price. Ipso facto; trust received, responsibility given and taken. All in all, I wouldn't hesitate to recommend London Box Sash and their windows, which prove that a good idea, is a good idea forever. Tom Williams

We had five windows replaced in three rooms at the back of the house. Unfortunately we do not have sash windows at the front. The whole process was completely trouble-free with Jack and Patrick gaining our confidence with their straightforward, no hard-sell approach. Judith responded promptly and Andy was great. We were away for the first couple of days so missed all the real disruption. When we came home on the third day, Andy was finishing off round the edges of the frames. We wanted the windows to be as near to the originals as possible and they are. The workmanship looks superb and-it may be our imagination -the house feels warmer already. We have no draughts and no armies of ladybirds coming in to die on the carpet! We went on the Which? recommendations and would endorse them all. The windows are not as cheap as UPVC ones but so much more attractive.

From start to finish our experience with London Box Sash Windows has been excellent and I would thoroughly recommend them. Having met with a number of providers they were the most professional and no hard sell. Throughout Jack, Patrick and Judith were always quick to reply, very knowledgeable and worked with our builder to make everything come together. Andy (the fitter) was a pleasure to have in the house, put in the hours to get it all finished and left the house so clean and tidy. The windows are fantastic, they look great and have given us much warmer rooms. The gift of a bag of log burning blocks from the factory was the icing on the cake from a genuinely lovely company with a brilliant product.

We were very impressed by the initial visit and careful survey to ensure we got exactly the right product for our needs. There was no hard sell. The installer was brilliant: prompt, careful of our house and carried out a good job in an amazingly short time. We are delighted with the results - not the cheapest deal we were offered but absolutely excellent quality.

Jack and the team were a pleasure to work with from start to finish. We had a lot of different companies quote to replace our windows but London Box Sash stood out to be the best as they offered top quality windows for a competitive price, along with great service. Our installer was brilliant and did a fantastic job fitting them whilst making minimum mess and always arrived on time. I would definitely recommend London Box Sash to anyone.

We have recently had all of the Windows at the front of our Victorian mid-terrace replaced and have been delighted with the result. We went with Sashbox because they are a family business and obviously passionate about their product and the service they offer. We had several quotes from other companies but none were as keen to tell you about how their product works and what sets it apart. Attention to detail from start to finish from Jacks sales pitch, to Patrick measuring up and to Jasper on installation. Wouldn't hesitate to recommend them (and are just about to place our second order!). Thank you Sashbox!

I have just had 4 front elevation sash windows replaced, in a Victorian end of terrace house in South East London, by London Box Sash Windows and I am thrilled with them. The whole process from getting tenders, through the survey, administration and installation has been excellent. Jack and Patrick guided me through what was offered and what the installation process was, Judith in the office dealt with the administrative issues promptly and efficiently and Andy the installer was very quick, efficient, informative and left no mess - what more could you want. The quality and finish of the windows is excellent, the difference the windows have made to the warmth and sound in my house is noticeable, and they look so good! I would recommend this friendly, family company with no hesitation.

We have recently had all the windows replaced by Londonboxsash in our Edwardian home in Tooting and are absolutely delighted with the results. The service provided by Jack & Patrick from the initial visit to completion has been fantastic, completely seamless and professional with no problems at all. We were really pleased to use a local family-run business and Jack even gave us a tour of their workshop in Mitcham where we saw the windows being made - really interesting! We were then surprised by the windows being ready earlier than we had expected, and they were then fitted beautifully by Andy & Angelo over just a couple of days with no disruption. The quality and finish of the accoya wooden sash windows is amazing, and they have matched the original detailing and style of windows on our street exactly. We have had plenty of compliments from our neighbours and friends, and would not hesitate to highly recommend Londonboxsash to anyone. Many thanks to the whole team, best wishes Lauren & Kalpesh

Our windows are absolutely stunning and it has completely refreshed the look of our house. We had two bay windows, three single windows and one stained glass window completely redone with London Box Sash (double glazed, toughened, acoustic-glass with new architraves and sash mechanisms) and are extremely satisfied with the results. We have had many neighbours coming by to complement the work and it would be our pleasure to recommend you going forwards. Thank you to Jack, Patrick, Judith, Andy and Angelo for being a first class team. You were completely dedicated to the project, always available to speak to, and it was a true pleasure to have worked with all of you. All the best, Astrid

London Box Sash Windows have recently fitted to my late Victorian house a rear door to the garden, two casement windows and three sash windows. Over the years, I've had two listed houses completely renovated, and in my professional life I have led on the restoration of an important Grade II listed 1896 music school in south east London. I'm struggling to think of a more positive experience with any supplier or service company than I've had with Jack and Patrick Ellis, whose product line is surely second to none. And I cannot speak too highly for the workmanship of Ramunas, the joiner-fitter they scheduled for this job; his profoundly adept handling of materials, client-facing skills and work ethic brought out the best in what the workshop had custom-crafted for my home, and I am very grateful to the whole team.

We have just had our one hundred year old bedroom windows replaced by London Box Sash Windows. We had several quotes but went with a family run business. From Jack arriving with samples of a beautiful product designed by his father and Patrick coming to do the survey ,we were impressed. Then Andy and Angelo fitted the three Windows over a three day period and were excellent. Very clean and tidy, extremely helpful to me when my husband was away ,helping me to put furniture back, above and beyond the call of duty. A great firm, great staff, already having quote for another window .

From beginning to end the entire process was seamless and professionally handled. Jack's initial presentation was clear, comprehensive and without any pressure to proceed with an order confirmation. The detailed comparative illustrations and support material soon followed and again were clear and easy to understand. The most impressive part of all was the actual installation of the windows by Ramunas who completed the work with the minimum of disruption or mess. We are delighted with the outcome and happily recommend London Box Sash Windows to anyone considering replacement windows. David & Sue Dixon-Smith August 2016

We got several different quotes for replacing the windows in our 1930s semi detached. Jack and Patrick were recommended to us and were a head a shoulders above the rest in their customer service. Came to see us straight away and were happy to spend time working out solutions and making suggestions. Andy and Angelo came to fit the windows and did a great job. Arrived on time, worked really hard, polite, friendly, explained stuff and cleaned up after themselves each day. I really feel like they all cared about the outcome for me, the customer. The windows make such a difference and look amazing.

Since we moved into our Victorian house three years ago, we have been working our way through replacing the existing windows which were pretty much held together by paint. We saw a number of companies initially but settled for London Box Sash Windows due to the quality of the product but also the strong sense of a family company. We have had around 14 windows replaced now over 3 stints and not had any regrets. The latest installation of two windows was completed two weeks ago. The quality is excellent and with the Accoya wood we haven't had any sticky frames or needed any other follow up adjustments. It is always a pleasure to deal with Patrick and Jack during the order process and you are kept well informed throughout by Judith in the office. The installers Francois, Ramunas and Andy have all been extremely professional and taken great pride in their work. And at the end of it all, we are left with some beautiful windows inside and out which have enhanced the house. And we still have more to sort so will be back in the future.

London Box Sash did a great job - my windows look great! You get the feel of a family firm when Jack comes to measure for the quote, and then brother Patrick for the more detailed survey. Our windows were fitted by Ramunas and Angelo, who were very polite, bust a gut to get it done as quickly as possible and cleaned up after themselves. Highly recommended!

I looked at a number of sash window companies and am very happy I made the right decision to go with London Box Sash. The service and product are both faultless. The team were friendly and professional, delivered on time and responded quickly to a couple of concerns I had. The fitter Ramonas did a fabulous job and left my home spotless. The windows are beautiful and the quality by far exceeds window products I saw from other companies. A big thank you to the whole team. My only regret is that I didn't find them sooner.

I would thoroughly recommend Box Sash, and would definitely use them again. They are a family business that take huge pride in the craftsmanship of their products, and as a result make exquisite windows. It has been a pleasure dealing with them, and they have been passionate and courteous and helpful to us at all times. It is rare to come across such quality and professionalism.

I was very impressed with the job London Box Sash windows did from start to finish. Jack the pre-sales representative was very thorough and was able to tailor the requirements to meet our needs. He came armed to our first meeting with an example window which gave us a really good idea of what to expect from the finished product. The payment milestones are practical and fair which ensures you don’t pay the balance until your happy with the job that's been done. Andy, the fitter was very friendly, tidy and efficient and completed the work in good time. Overall I’m really pleased with the windows and so are my neighbours as I’ve had a few comments already!! Thanks again.

We have just had our front bay windows replaced upstairs and down. The new windows match perfectly the original Edwardian style. The estimate was competitively priced and the whole process went smoothly. Andy, the fitter, was excellent and finished the work well on time. He finished off the work meticulously and furniture was protected from dust and dirt; he cleaned up each evening and we quickly were able to put back curtains and furniture. I have no hesitation in recommending them.

From the point of quotation, through to the final fitting, London Box Sash were excellent in all of their work. Jack and Patrick were communicative, and swift in their quotation and surveying, and when they arrived, the windows fitted seamlessly and in the given timetable. The level of tidiness of the install team was exceptional, and you really did not know they had been in each day. We had a couple of specific requests for the windows, that they followed perfectly, and have maximised the light and space in our small house to perfection. Many of our neighbours have asked where we got the windows, and I have no hesitation in recommending London Box Sash to anyone. As a Project Manager for a fit out company, I am exceptionally fussy about finish, and I could not find a fault in the installation of any kind.

We have just had 7 box sash windows installed by London Box Sash. We want to say we are absolutely delighted with the work they have carried out for us. Everything from the initial survey, where they sat down with us to really get to know what it was we wanted, right through to the final installation they have been a pleasure to deal with. We opted for their Premium option sash windows, which although it wasn’t the cheapest quotation we received, we felt it definitely represented the best value for money. We would like to thank Patrick, Jack, Judith and the rest of the team for their hard work and we will certainly be recommending London Box Sash Windows to family friends in the future. 10/10

Our new bay windows are fantastic quality and look great. Everything went smoothly, from the initial consultation right through to the installation. The job was completed quickly and efficiently and the fitter (Ramunas) was polite, professional and very tidy. The improvement in terms of noise, heat insulation and the general appearance of the windows is huge. Thanks London Box Sash!

I would totally recommend London Box Sash - everything from the initial sales process, through to survey and fitting has been fantastic. We have just had more than ten new windows fitted and I am so pleased that we chose this company to do the job. In many ways it was an easy decision as although we spoke to a few others, London Box Sash stood out for us - Jack took us through his sample window in detail one Saturday morning and we could see what a great quality product it was. Once fitted, they looked great - even my builder has said that they are top quality windows (and he sees a lot of houses!) Thanks to all of the team at London Box Sash!

After reviewing a number of companies we finally commissioned the London Box Sash. Having been approved by Which was really helpful as their assessment covers all the basics around reliability and credibility. The company proved to be very easy, pleasant and transparent people to do business with. They are very enthusiastic and committed to their products and the service they provide and deservedly so. My wife and I really appreciated being able to visit their factory on a Saturday morning to have their manufacturing processes demonstrated to us. The price was very competitive with similar products and they offered us a significant discount to fit in with their available installation timetable. When I requested window fittings that they did not use as standard they sourced them at no extra cost. When the windows arrived on site we were not disappointed, the quality was excellent and now they are installed they look fabulous. Two weeks on we still get neighbors stopping to look. The window fitter who came to do the installation produced excellent quality work of a very high standard and was a pleasure to have in the house. He arrived on time each morning and worked extremely hard throughout the day. His preparation was through, he partitioned off each room worked in to reduce dust and mess, cleaning up thoroughly afterwards. It is really nice to see people who take a pride in the work that they do and the excellence of the finished product represented this.

We met with a number of potential suppliers before deciding on who to instruct to replacenour wooden sash windows. These guys were better by a country mile on price, quality, customer service and know-how. They really took the time to understand requirements, no hard sell and they really know their product. I am quite picky (!) and have a clear idea of what I want. Jack and Patrick were really attentive and really understood my brief. The fitter was fantastic too. He worked around my day (I work from home and have 2 small children), arriving when I asked so I could let him in before the school run. He was extremely tidy and hoovered and cleaned after himself which was fab. Cannot rate these guys more highly. If only I could clone them to provide me with building, plumbing and electrician services too......

We have just had London Box Sash replace two bay windows, 3 large windows and a pair of French windows and we are delighted with the job. On the first visit, there was no hard sell and they took time to explain the products and options before sending a detailed quote. When we accepted it, they came to take detailed measurements. The work started when they said and only took 6 days. Andy, the fitter, worked extremely hard and did a brilliant job. He was the tidiest workman we have ever had! The windows are beautifully made and have attractive detailing. We have noticed a difference in terms of noise and warmth. All in all, money very well spent and we shall go back to the company when we have other windows replaced.

I cannot recommend the team at London Box Sash highly enough. I used them to replace my original sash windows and am so pleased with the new windows and the work that they did. I discovered them after reading recommendations on the East Dulwich Forum and later found out my neighbour had used them, so was able to see their work first-hand. Initially I had trouble getting hold of Jack for a quote, simply because he was so busy, and that popularity is a testament to how good they are. I’m glad I persisted because I could not be happier. They are reasonably priced based on the comparisons I made and excellent quality. Andy, the fitter, did a fantastic job and I happily left him to it while I went to work. I was impressed with all the preparation made to protect my cream carpet which was still spotless at the end of it all. And he was really conscientious about making as little mess as possible, leaving everything tidy at the end of each day. It’s inevitably a very dusty job of course, but everything was so well protected it wasn’t an issue at all and much less hassle and upheaval than I was expecting. Everyone I dealt with at London Box Sash (Jack, Patrick, Judith and Andy) was always really friendly and helpful, and I appreciated dealing with a genuine, hard-working, family run business. My Dad is a programme manager in the construction industry and even he (a notorious perfectionist) was extremely impressed. Great team and great windows! Highly recommended.

We chanced across these guys towards the end of our search for new wooden sash double glazing and I'm so happy we did. From the moment they came around to quote they were a cut above the rest. No hard sell, no 'buy now' discounts just a knowledgable presentation of their product which they were extremely proud of, and rightly so. Price wise they were very competitive, even for their highest specification models which were far better than anything else we saw. Our only other concern was the fitting, we have a very old home, recently decorated, which had the potential of a lot of plaster to come loose. They however took the upmost of care to ensure as little disruption as possible, their attention to details was exceptional and the covering up of everything in the house made sure no dust or dirt was left behind, the fitters were true professionals and highly skilled in their trade. I couldn't recommend them highly enough.