Endorsed by Which?

Unicorn Windows Ltd

4.9

86 Reviews

Opening Hours
Today - 08:30–12:00
  • Monday 08:30–17:00
  • Tuesday 08:30–17:00
  • Wednesday 08:30–17:00
  • Thursday 08:30–17:00
  • Friday 08:30–17:00
  • Saturday 08:30–12:00
  • Sunday - Closed

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About

Unicorn Windows are committed to delivering quality home improvements with professionalism and care.
We know that choosing a company is a big decision, and we strive to make the process straightforward, informative and stress-free.
All products offer durability, security and thermal efficiency, helping improve comfort and reducing energy costs.
Why Choose Us?
Clear, honest communication – From initial enquiry through to completion, we offer detailed quotes, practical advice and realistic timescales.
Quality workmanship – Installations are carried out by experienced, skilled fitters who pay close attention to detail and treat your property with respect.
Reliable service – We complete projects on time and leave homes clean and tidy
Compliance – Our work is carried out in accordance with current building regulations and best practices, giving confidence in both safety and performance.
Customer satisfaction – We value feedback and aim to build long-term relationships through great service and aftercare

What we do

  • Double glazing

    • Double glazing installation
    • Double glazing repairs
    • Double glazing suppliers
  • Conservatories

    • Conservatory repairs
    • Hardwood conservatories and orangeries
    • Conservatory maintenance
  • Glaziers

    • Replacement window services and repairs
    • Window consultants
    • Sash windows
    • Timber windows
    • Double glazing installation
  • More Services

    • soffits guttering fascias garage doors porches

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

4.9
86 reviews
Customer Service
4.9
Quality
5.0
Value
4.9
Sort by
Conservatory
Customer Service
Quality
Value
Unicorn Windows Ltd of Leighton Buzzard recently installed a conservatory for me. I am very impressed with their ‘Can Do’ attitude and the team works throughout out the installation period. The location of my property is set far back from main road and there is only a small walk path leading to my property which is difficult to carry all materials and tools, but with Unicorn Windows team work’s experience made the whole project ran smoothly and successfully. Unicorn Windows teams are polite, easy to communicate with and provide a good service after sale. The quality of conservatory’s frames, windows ,roofs and French doors are very good quality The workmanship in the term of brick layer and construction are excellent. I do not hesitate to recommend to anyone who want to build a high quality of conservatory with a reasonable price, The unicorn Windows Ltd of Leighton Buzzard will be the First Choice!
Customer in Central Bedfordshire Posted on 11/04/2026 , work completed 14/02/2026
Excellent service for over 20 years
Customer Service
Quality
Value
Another excellent experience with Unicorn Windows. We have used Unicorn for 20 years and they have always been a great company to deal with. The first job was replacement doors and windows for the back of our garage (also recommending a very good firm who installed an automatic front garage door), followed by multiple one-off replacement units when our pre-existing ones developed internal condensation, then new front and back doors and most recently completely changing out our time expired double glazing for triple glazing, bifold doors for the patio and a new porch, including replacing some tired looking fake pillars at the front door. With a 10 year warranty (much longer than most companies) we’ve always been delighted with their responsiveness when any niggles have arisen. The latest team worked very hard for the two weeks they were here and we are very pleased with the results (they even cleaned out a blocked gutter). Unicorn installed missing lintels over all windows needing them - something the original company should have done - and provided bespoke designs for the new porch, the bay window moulding and our arched window. Removing the Georgian bars at the back of the house has let much more light in, whilst retaining them at the front and side has kept the house in keeping with the rest of our road. We have no hesitation at all in recommending Unicorn Windows for any of your door or window requirements.
Customer in Central Bedfordshire Posted on 27/03/2026 , work completed 12/03/2026
New windows for old cottage
Customer Service
Quality
Value
From initial contact with Unicorn Windows, all the way through quotation, detailed pre-work on site survey and final windows fitting, service was excellent. Quotation was accurate and adhered to, product was as described and fitting team were on time, professional and produced an excellent final result. Completely to our satisfaction. Thankyou to the whole Unicorn team.
Customer in Hertfordshire Posted on 31/01/2026 , work completed 30/01/2026
Professionalism from Beginning to End
Customer Service
Quality
Value
I hadn't used this company before but wanted to use a local trader, who I know do lots of work in Leighton Buzzard. From the initial consultation , through survey and then fitting, I found all involved to be highly professional and a pleasure to deal with. The fitters took 2 days to replace all windows and patio doors, clearing up after themselves and were very pleasant to deal with. I have no hesitation in recommending them to anyone and would definitely use them again.
Customer in Central Bedfordshire Posted on 20/10/2025 , work completed 02/09/2025
A really hardworking team
Customer Service
Quality
Value
Unicorn replaced my kitchen windows with a type that opens from the bottom, to enable me to reach the handles. They also replaced some child lock hinges on my bedroom windows. The whole process was very smooth from the initial contact to the final invoice. Before the installation I had several queries which were answered very quickly and explained thoroughly. They always answered the phone. The fitters were very friendly and professional. They were tidy, quiet and respectful of my home. They went over and above to help me, taking time to adjust the handles and didn’t leave until I was completely happy. With the final invoice came a booklet explaining how to maintain the windows which I will find very helpful. A first class service from all the Unicorn staff I dealt with.
Customer in Central Bedfordshire Posted on 03/09/2025 , work completed 01/09/2025
Replacement door panel - guarantee's work
Customer Service
Quality
Value
8 year old front door had a blown glass unit which Unicorn agreed to replace. It wasn’t available when we had other work done, but were given some dates that weren’t convenient. We suggested last Thursday but Unicorn said they would confirm. Fitter arrive at 9am to our surprise, fitted the panel and left within half an hour. Very pleased with completed job.
Customer in Central Bedfordshire Posted on 28/06/2025 , work completed 26/06/2025
Replacement patio door
Customer Service
Quality
Value
Called into Unicorns' windows office as we had blown units and were delighted that we could get an estimate later that day. The surveyor came out a day or so later to confirm measurements. Given an estimated delivery time, which was acceptable. We were phoned to say they had a cancellation for the 13 June, earlier than anticipated, which we accepted. Fitters arrived on time at 08:30 and soon had the old UPVc unit out. They prepared the site and again had the new unit in and complete by 12:15. All rubbish was removed from the site, and a few cosmetic items were remedied. Very pleased with the installation and the operation of the new unit.
Customer in Central Bedfordshire Posted on 22/06/2025 , work completed 13/06/2025
Replace the conservatory to a new design' and porch/windows
Customer Service
Quality
Value
What a great company, goes that extra mile what a shame all companies aren’t like this Chris and David who are more than helpful . The fitting team, Steve and Sam with their attention to detail impressed me.. Hugh, nothing was too much trouble, the only company I would recommend to anybody for a great job
Customer in Hertfordshire Posted on 30/05/2025 , work completed 12/05/2025
Completed on time
Customer Service
Quality
Value
Your company was very co-operative and positively responsive, without delays, and completed the job in the required timescale.
Customer in Central Bedfordshire Posted on 04/04/2025 , work completed 26/03/2025
Very good job
Customer Service
Quality
Value
From the time we first spoke to Unicorn Windows till the job was completed was just a couple of weeks, the new doors were fitted professionally and quickly with now mess left or making good to do, very pleased.
Customer in Central Bedfordshire Posted on 01/04/2025 , work completed 27/03/2025