TrustMark accredited companies in London

120 construction companies in and around London displaying TrustMark.

• I Interskills Solutions Ltd London · Main contractor · 1-9 employees

  Construction company in London specialising in extensions, loft conversions, renovations, kitchen and bathroom installations, and property refurbishme

• J JC London Construction London · Main contractor

  JC London Construction delivers high-quality services from conception to completion for major renovations and small jobs. They assist with planning ap

• J JCH London London · Heating & ventilation · 1-9 employees

  JCH London offers expert heating, ventilation, and green energy solutions for domestic and commercial clients across London, focusing on quality workm

• J Jht Energy Services Ltd London · Heating & ventilation

  JHT Energy Services installs Air Source Heat Pumps with a £7,500 grant, plus private solar panels & air conditioning. TrustMark Certified.

• K K K Electrical Contractor Ltd London · Electrical

  Professional electrical services for residential, commercial, and industrial clients. Certified electricians providing reliable solutions.

• K Kbb Master Builder Ltd London · Bathroom fitting · 1-9 employees

  KBB Master Builder LTD offers comprehensive house renovation services including full house refurbishment, loft conversions, and bathroom installations

• K KCS ELECTRICS LTD London · Electrical

  NICEIC approved electricians and Gas Safe engineers in London. We provide electrical installations, EICRs, and landlord safety certificates. Book a se

• K Kingdon Design & Construction Ltd London · Extensions · 1-9 employees

  Kingdon Carpentry & Construction offers tailored carpentry and building services in South East London, specializing in home extensions, renovations, k

• K Kulli Construction Ltd London · Loft conversions

  Expert loft conversions and house extensions across North London. Over 15 years of experience in design, build, and finishing for homes.

• L Landmark Construction Ltd London · Main contractor

  Landmark Construction is dedicated to crafting exceptional structures that blend quality, innovation, and artistry. We build lasting relationships by

• L Lime London · Solar PV

  Powering Homes and Businesses with clean renewable energy built around your needs. Making the move to renewable energy simpler and smarter.

• L London PDP London · Damp proofing

  London PDP Ltd is London's local Damp Treatments & Structural Waterproofing Expert, serving homeowners, property developers, architects, and estate ag

• L London West Builders London · Painting & decorating · 1-9 employees

  London West Builders is a highly skilled team of reliable builders, painters, decorators, carpenters, plumbers, and electricians in London, offering a

• L LOW CARBON LONDON LTD London · Solar PV

  Low Carbon London Ltd installs air source heat pumps from £10,000, handling the £7,500 Boiler Upgrade Scheme grant. Samsung specialists with a 7-year

• L Lunar Solar London · Solar PV

  Lunar Solar provides expert solar panel and battery storage installations for UK homes. Get a free quote and start saving on your energy bills today.

• L Luxo Design LTD London · Roofing

  Luxo Design LTD specialises in premium roof windows and skylight installations across London. With over 20 years of experience, they offer expert cons

• M M&E Services Ltd London · M&E contracting

  Re-Gen M&E Services provides Mechanical and Electrical solutions across London and the South East with over 20 years of industry expertise.

• M M25 ELECTRICAL CONTRACTORS LTD London · Electrical

  NAPIT registered electrical professionals in East Ham with over 17 years' experience offering clear pricing for homes and businesses. Installations, t

• M Mainline Access Rope System Solutions Ltd London · Security systems

  Access control, CCTV and integrated security systems for hospitals, data centres, warehouses and commercial buildings. Request a security consultation

• M Martins Builders & Decorators Ltd London · Extensions · 1-9 employees

  Martin's Builders & Decorators is a trusted builder serving customers in London, Greater London and the surrounding area. Offering a wide range of bui

• M Mm Electrical And Design Ltd London · Electrical

  MM Electrical and Design Ltd are a NICEIC-Approved electrical contractor offering 24/7 availability for domestic, commercial and industrial works.

• M Monty's Builders London · Main contractor · 1-9 employees

  London-based builders and maintenance agency. Renovation, extensions, electrical, plumbing, heating and roofing, delivered with craftsmanship and reli

• M Morgan Asphalte Company Ltd London · Roofing

  Morgan Asphalte is a family-run roofing contractor with over 50 years of experience in London and the Home Counties. They offer a wide range of roofin

• M Mt Sites Ltd London · Electrical

  MT Sites Limited is a West London-based electrical service company offering 24-hour emergency call-outs, installations, rewiring, and testing for dome

• M MyConstructor London · Electrical

  MyConstructor offers a nationwide network of qualified professionals for domestic EPCs, EICRs, PAT testing, and other property services. Get instant q

• N Newmay Electrical Services Ltd London · Electrical · 10-49 employees

  Newmay Electrical Services Ltd, established in 2007, provides professional and efficient electrical services throughout London for domestic and commer

• N NOLA RENEWABLES LIMITED London · Solar PV

  Nola Renewables specialises in helping businesses and homes transition to greener, more sustainable futures with tailored renewable energy solutions.

• O OL and Edward Ltd London · Refurbishment · 1-9 employees

  Design-led home renovation, kitchen fitting, bathroom renovation, loft conversions and full refurbishment services across London. Fully insured, accre

• O Olympus Property Group Ltd London · House builder · 1-9 employees

  Olympus Property Group offers expert residential construction and surveying services in Hampshire, including new builds, renovations, loft conversions

• P Perfect Square Development Ltd London · Refurbishment · 1-9 employees

  Premium construction, house extensions, loft conversions and home renovations across London and the Home Counties. Precision, craftsmanship and qualit

• P Pjtc Ltd London · Refurbishment · 1-9 employees

  PJTC Ltd offers expert bathroom and kitchen renovations, remodelling, and fitting in Glasgow. They provide design, supply, and installation with over

• P Presurv Energy Ltd London · Solar PV

  Presurv Energy Ltd offers EPC services, grant funding for property improvements like solar PV, heat pumps, and solid wall insulation, helping homeowne

• P Prime Fire Safety Ltd London · Fire protection

  Prime Fire Safety Ltd: trusted fire safety consultants and electrical service providers in Finsbury Park, London. Accredited experts in fire alarms, c

• P Purdy Contracts Ltd London · Electrical

  Purdy is a well-established, mechanical, electrical, building services and renewable energy contractor. Committed to clean energy contracting.

• P Pyramid Eco London · Insulation · 10-49 employees

  Upgrade your property with expert retrofitting. Cosier, greener homes with minimal disruption. Check your funding options!

• Q Qays Services Ltd London · Refurbishment

  Qays Services Limited offers high-quality home renovation services in London and surrounding areas, specializing in refurbishments, extensions, and va

• Q Qualis Energy London · Air conditioning

  Qualis Energy operates five specialist brands: ArcticNord (air conditioning), EmberNord (boilers & heating), AuraNord (heat pumps), ZenithNord (solar

• R R. Dunham (UK) Ltd London · Electrical

  Ensuring safety with thorough electrical testing and installation condition reporting for your properties.

• R Refresh PSC London · Damp proofing

  Refresh Property Services & Consultants offer Damp Proofing & Basement Waterproofing services throughout London and surrounding areas.

• R Refurbishment Specialist London · Refurbishment

  C Shambi Builders Ltd, trading as Refurbishment Specialist, offers expert refurbishment, extension, and carpentry services across London and Home Coun

• R Retrofit Services London · Insulation

  Retrofit Services is a leading organisation in the Retrofit industry since 2013, focused on reducing energy use and carbon footprint in buildings.

• R Rhema Sustainable Energy Ltd London · Heating & ventilation

  Professional air source heat pump solutions for homes. Expert installation, servicing, and EPC assessments to enhance energy efficiency and savings.

• R Rib Construction Management Ltd London · Refurbishment

  RIB Construction Management LTD is a UK construction management company delivering residential building, commercial refurbishment and professional con

• R Richway Lofts & Extensions Ltd London · Extensions · 1-9 employees

  Transform your home with Richway's expert house extension, loft conversion, and renovation services in London and Essex. Book now!

• R RK SUPPORT SERVICES LIMITED London · Heating & ventilation

  RK Support Services provides government-funded energy-saving solutions like free boiler replacements, insulation, and solar panels for homeowners and

• S SafeApproach Services Ltd London · Electrical

  SafeApproach is an electrical and fire safety compliance contractor supporting social housing, commercial and public sector clients with testing, reme

• S Salmon Building Ltd London · Refurbishment

  Salmon Building Ltd offers high-quality refurbishment and renovation services, specializing in home offices, carpentry, and finishing work. Serving Lo

• S Sandarov Ltd London · Refurbishment

  Sandarov Ltd is a North London building company offering loft conversions, home extensions, renovations, and structural work. Professional, reliable,

• S Scl Design & Build Ltd London · M&E contracting · 1-9 employees

  SCL Design & Build Ltd is a London-based mechanical and electrical design and build specialist, delivering professional design, installation, complian

• S Shapeup Constructions Ltd London · Insulation · 1-9 employees

  ShapeUp Constructions LTD specialises in External Wall Insulation (EWI) and Silicone Rendering, enhancing energy efficiency and aesthetics for residen