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Endorsed by Which?
Certified Group LTD
Opening Hours
Today - 24 hours
- Monday - 24 hours
- Tuesday - 24 hours
- Wednesday - 24 hours
- Thursday - 24 hours
- Friday - 24 hours
- Saturday - 24 hours
- Sunday - 24 hours
About
Welcome to Certified Group Limited,
Affiliated with Certified Gas Heating Limited.
Established in 2012, A fast-growing company with an impressive reputation accommodating your plumbing, heating and gas constructively. Over the recent years we have started to offer additional services which include: Electrical, renewables, drainage, carpentry, roofing, property renovations, Loft conversions and kitchen extensions, thus the reason for the name change as it fits our image at present. We at Certified Group are known for being passionate, driven, professional and organised tradesmen at all times. We are approved contractors rated a “5 Star company for quality services” on platforms such as Which Trusted Trader, Trust Pilot and Checkatrade etc.
Ourselves at Certified group have a remarkable track record for our hard work, performance, quality, customer service and efficiency.We are based in Greenwich/London as well as Dartford/Kent and we cover the whole of the capital including the surrounding areas.
What we do
Heating contractors
- Central heating systems (installation and servicing)
- Immersion Heaters
- Automated Heating
Plumbers
- Emergency plumbing services
- Unvented cylinder installation and maintenance
- Water softener installation and maintenance
Boiler, central heating and gas engineers
- Boiler installation
- Boiler repair
- Boiler servicing
- Radiators and central heating
- Gas cooker installation
- Gas cooker repair
- Gas emergencies
- Gas fire repair and servicing
- Gas safety testing and inspection
- Immersion Heaters
- Power flushing
- Underfloor heating
Gas installers
- Gas Fires
Builders
- Extensions
- Garage conversions
- Loft conversions
- Plastering
Electricians
- Electric Showers
- Electrical emergency services
- Electrical installations
- Electrical repairs
- Electrical testing services
- Landlord safety certificates
- Fuse boards
- Outdoor electrical wiring
- Rewiring
Drain clearance contractors
- Blocked drains
- Drain and sewer services
- CCTV drain surveys
- Drain installation
- Emergency drain clearance service
Property refurbishment contractors
Building construction contractors
- Basement Waterproofing
- Basement conversion
- Building construction management
Bathroom fitters
- Accessible bathrooms and showers
- Wet rooms
- Electric Showers
- Bathroom Installation
- Bathroom design services
- Bathroom refurbishment
- Bathroom suppliers
- Bathroom tiling
Kitchen fitters
- Kitchen design
- Kitchen installation
- Kitchen refurbishment
- Kitchen tiling
- Kitchen worktops
- Granite Worktops
Carpenters
- Joinery and carpentry
Tile fitters and showrooms
- Bathroom tiling
- Floor tiling
- Kitchen tiling
Roofers
- Flat roofing
- Roof and skylights
Glaziers
- Double glazed units
- Double glazing installation
- Aluminium Windows
- Double glazing repair
- Glass boarding up and replacement
- Replacement window services and repairs
- Sash windows
- UPVC Windows
- Timber windows
- Triple Glazing
- Velux windows
- Window consultants
Doors
- Bi-fold doors
- Composite doors
- Door repairs
- French doors
- Front door
- Patio doors
- Timber doors
- UPVC doors
- Aluminium doors
More Services
- re-roofing
- roof refurbishment
My work
Customer reviews
Why you can trust these reviews
All reviews are verified as being genuine and a true customer of this trader.
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100% of the reviews we publish have been through our stringent moderation process.
4.9
125 reviews
Recommended
Recommended
by 99% of customers
Sort by
Boiler Replacement - Great Service
Customer Service
Quality
Value
Very happy with Aziz and his team, replacing the boiler in my flat. Communication was great, all clear and honest. Work was done quickly and everything kept tidy and clean. Would highly recommend!
Customer in Greater London
, work completed
Recommended
Fast friendly excellent emergency job
Customer Service
Quality
Value
I contacted Certified Group late Weds afternoon because a leak had started in the kitchen which I'd hopefully identified it as the inlet to the washing machine. Aziz phoned, asked a few questions about the problem, we agreed the final price for parts and labour and he advised me to turn off the mains supply. Karim arrived early evening and soon identified the washing machine filter and a short piece of cold water feed pipe as needing replacement. This he did and completely dried and cleaned the floor too. All this took him about 1 hour. A little after Karim left, Aziz phoned to ask if everything was now OK and if I was happy with their service. I certainly am. This was the first time I've used Aziz and co. but will call them first for any other heating or plumbing requirements I have.
Customer in Greater London
, work completed
Recommended
Bathroom repair
Customer Service
Quality
Value
Really swift and efficient service - ETA clearly communicated, job thoroughly explained, performed effectively and comprehensively cleared afterwards - good work I have no hesitation recomending.
Customer in Greater London
, work completed
Recommended
Water mains leak
Customer Service
Quality
Value
Certified Group attended to track down a leak, that they identified as being on the mains inlet pipe. There were also some leaky taps and a toilet needing attention. Aziz and his team dealt with all this efficiently, keeping me well informed at every stage. They arrived on time and put in long hours, always cheerful and a pleasure to have around. The toilet repairs were more extensive than anticipated, but were completed to a high standard well within the schedule. Each day and on completion everything was left neat and tidy.
Customer in Greater London
, work completed
Recommended
Extremely Professional with high quality workmanship
Customer Service
Quality
Value
Aziz and his team were extremely professional and it was really refreshing to have work carried by people who genuinely cared about what they were doing with an extremely high quality of workmanship. Aziz is extremely helpful and has an amazing attention to detail. Everyone had great respect for our home and left it spotless when finished. I would highly recommend.
Customer in Greater London
, work completed
Recommended
Fix leak, put in new tiles and bath/shower
Customer Service
Quality
Value
Aziz and his team did a terrific job identifying the source of a leak in a terraced house bathroom. They removed an old bath, shower, shower screen and tiles. They straightened the wall, added insulation put in new tiles, new bath/shower and reattached basin. There was barely any mess or dust, the protective covers they installed on the carpet worked perfectly. And they were very good at cleaning up and removing rubbish every day. Aziz and his team were all professional, friendly and approachable. The finished job looks fantastic. Hopefully, they will be available for any future jobs.
Customer in Greater London
, work completed
Recommended
Full 4 bedroom house renovation
Customer Service
Quality
Value
I had Aziz from certified group ltd come and do a full house renovation for me which included full plumbing, electrical rewire, plastering, painting and decorating etc. from the beginning to the end Aziz and his team were an absolute delight! Really professional tradesmen, I'm so happy with all the works that has been done to my home, everyone that comes over has been complimenting how amazing it looks! In fact two of my friends has asked for Aziz’s number. They are always on time, they clean after themselves and have always left my property in an immaculate condition. I recommend Aziz and his team to everyone. You will not be disappointed! Thank you Aziz and the rest of the certified group team. I will definitely be using you again very soon.
Customer in Greater London
, work completed
Recommended
Great plumbing and building team
Customer Service
Quality
Value
Aziz and his team (special mention to Karim and George) undertook extensive repairs to our hot water and central heating systems in our apartment. They worked extremely hard to produce a quality professional result. Our impression is that they will not compromise in order to achieve a high quality long term solution and their aim is to foster long term clients. Completed within time frame and on budget. Highly recommended!
Customer in Greater London
, work completed
Recommended
Great Work
Customer Service
Quality
Value
Aziz and his team came and upgraded the heating system in my house, incl the replacement of a very old boiler with a modern one, the gas pipeline upgrade, disposal of old dirty water tanks, they also resolved many potential problems in the kitchen. Aziz and his mates showed professionalism and sometimes they worked long hours eg 8am to 8pm to keep up with the plan while working on more items associated with the plan... I'd recommend them.
Customer in Surrey
, work completed
Recommended
Boiler replacement.
Customer Service
Quality
Value
Good job professionally done with respect for my property. Engineers clearly knew what they were doing and took pride in doing a good job.
Customer in Hertfordshire
, work completed
Recommended