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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.
How can we be so sure?
100% of the reviews we publish have been through our stringent moderation process.
4.8
120 reviews
Recommended
Recommended
by 99% of customers
Sort by
Dedicated, knowledgeable
Customer Service
Quality
Value
Great service from start to finish, completed tricky job. Place was spotless, both guys respectful, the property & worked tirelessly through bank holiday to get a problematic boiler fitting complete.
Liam John, London
, work completed
Recommended
Hardworking
Customer Service
Quality
Value
Basically these are people you are happy to have working in your home - helpful, obliging, good humoured and hardworking. Certainly would recommend.
Frances, Surrey
, work completed
Recommended
1st class service.
Customer Service
Quality
Value
Professional, pleasant, wore overshoes without being asked. No mess whatsoever. Aziz & Keeba. Thanks
Paul, London
, work completed
Recommended
Great job!
Customer Service
Quality
Value
Having been let down by another plumber Aziz did a fantastic job - coming out at the weekend to do the job. Lovely guy, quality job & fair price considering it was a weekend. Would definitely use him again!
Customer in Greater London
, work completed
Recommended
Excellent, quick service from the company.
Customer Service
Quality
Value
The team for Certified were excellent as ever. Quick, efficient - they worked incredibly hard to put in a new boiler at short notice and at a busy time of year. I trust team, and will continue to use team.
Ben, London
, work completed
Recommended
Thorough & professional.
Customer Service
Quality
Value
Certified Gas Heating Ltd worked long hours to get the job done at short notice. Their work was thorough and professional, the team was helpful and friendly.
Josh, London
, work completed
Recommended
First class work and service
Customer Service
Quality
Value
Aziz was just brilliant in every way. He was courteous, professional, hard working and reliable, as well as being friendly and very customer focussed. He spotted and sorted out some issues left by the installers of the old boiler, and he kept me completely informed about his progress. He was also faultlessly tidy and left everything in ship shape order. He kept his promises, deserved my trust in him and took all the potential stress out of the process. I can't recommend him and his company more highly. I found his company via Which? Trusted Traders and wondered if all the glowing reviews could be true. They are!
Customer in Greater London
, work completed
Recommended
Boiler and gas pipe replacement
Customer Service
Quality
Value
Work carried out - see above. The trader reacted to an emergency callout which I had posted on the Vaillant website. He called me back the same morning and gave a quote. He advised me on gas safety which required pipes to be filled from the meter to the boiler, additional to the boiler fitting itself. The trader was reliable and helpful and carried out a good and professional job.
Cordula, London
, work completed
Recommended
New gas central heating, boiler & radiators
Customer Service
Quality
Value
Aziz, Kam and Kips were excellent. They recommend the best solution for my property and worked tirelessly to get it completed. You could tell the quality of their work was high. Copper pipes were all chased into the floors and the gas pipe into the wall. Kam spent most of the time on site and works like a machine to get the job done. The guys always cleaned up at the end of the day. I would highly recommend them.
Lloyd
, work completed
Recommended
Professional reliable service
Customer Service
Quality
Value
Aziz provided a quote within a few hours of diagnosing the issue with the boiler. Once quote was agreed, the replacement boiler was ordered and work commenced on the next business day. Service was very quick, professional and at all times both the tenant and the landlord was kept informed. The work was completed on time and within the agreed price. I have no reservations in recommending Aziz!
Customer in Westcombe Park
, work completed
Recommended