TrustMark accredited construction companies

1519 UK construction companies displaying TrustMark on their website.

• W Weston Painting Contractors Ltd Cardiff · Painting & decorating

  Commercial and Industrial Painting Contractors based in Cardiff, South Wales. Established in 1985, we offer protective and decorative coatings nationw

• U Ultimate Construction Group Ltd Sevenoaks · Refurbishment

  Ultimate Construction Group is a leading main contractor in the South of England, renowned for delivering high-quality maintenance, repair, and asset

• H Harling Electrical Ltd Snetterton · Electrical

  Electrical contractors covering Norfolk and Suffolk. Specialists in domestic, commercial, industrial, EV charging, solar PV, and battery storage.

• B Building Energy Experts Ltd Bristol · Refurbishment

  Award-winning sustainability consulting, testing and retrofit company. Based in Bristol but operating nationwide, we provide services for housebuilder

• C Csw Extensions Ltd Bristol · Extensions · 1-9 employees

  CSW Extensions are specialist house extension builders in Bristol, offering design and build services for single or double storey extensions, kitchen

• P Proguard Exteriors Ltd Aylesbury · Insulation

  ProGuard Exteriors specialise in spray cork insulation, internal and external wall insulation, wall coatings, and rendering across Oxford and nearby a

• T Thames Valley Insulation Ltd Slough · Heating & ventilation

  Thames Valley Insulation connects eligible UK households to the government-backed ECO4 scheme, offering free home upgrades like efficient boilers, cen

• G GoGreen Alliance Ltd Wolverhampton · Insulation · 1-9 employees

  GoGreen Alliance provides energy efficiency advice and installation for homes and businesses, focusing on insulation, heating, and ventilation solutio

• C C Jones Electrical Services Ltd Shrewsbury · Electrical

  C Jones Electrical Services is an Experienced Electrician in Shropshire. Quality electrical works from small repair to full installation.

• V Voltline Electrical Ltd Leamington Spa · Electrical

  Voltline Electrical Limited is a domestic electrician covering Leamington Spa, Warwick and surrounds. We offer a full range of services and some comme

• U Ursan Electrical Rugby · Electrical

  Ursan Electrical are Rugby based Electricians serving Warwickshire, Northamptonshire, Leicestershire and surrounding areas. NAPIT approved, providing

• U Unity Roofing Ltd Chelmsford · Roofing

  Unity Roofing Ltd is a family-run roofing contractor based in Chelmsford, Essex, with over 25 years of experience. They offer a comprehensive range of

• H Hipco Leeds · Windows & doors · 10-49 employees

  Yorkshire's award winning windows, doors and conservatory roof specialists, based in Leeds. Call us or visit our Garforth showroom today for your free

• B Belgrave Construction Ltd Waterlooville · Main contractor · 10-49 employees

  Belgrave Construction Ltd is a construction company based in Hampshire, specializing in high-end design, build, and refurbishment for residential, com

• C Caroman Ltd Bolton · Refurbishment

  Caroman Ltd is a dedicated construction and renovation company in Bolton, offering high-quality services tailored to unique needs. Proudly PAS 2030 ce

• M Milton Electrics Erith · Electrical

  Milton Electrics Ltd offers residential and commercial electrical services in London, focusing on quality workmanship and professionalism. They are NA

• M Matson's Electrical Services Ltd Woodhall Spa · Electrical · 1-9 employees

  Matson's Electrical Services Ltd is a trusted Lincolnshire-based electrical contractor specializing in installation and maintenance for domestic, comm

• T Thextons Ltd Birkenhead · Windows & doors

  Thextons Ltd is a construction and glazing company based in Birkenhead, offering services across Liverpool and the Wirral. Established in 2004, they s

• U Ultimate Build Teams Ltd Morden · Main contractor · 1-9 employees

  Ultimate Build Teams Ltd specialises in bringing dreams to life and transforming spaces into stunning realities. We are a trusted partner in the const

• X Xena Services Ltd Swansea · Solar PV · 1-9 employees

  Xena Services is an AM2-certified UK subcontractor delivering solar PV, inverter and battery installations alongside full energy retrofit work, for pr

• S Solarus Energy Ltd Stockport · Solar PV

  Solarus Energy Manchester installs solar panels, EV chargers & smart home tech. Trusted renewable energy services for Manchester properties.

• I Ipsum Renewables Mansfield · Solar PV

  Expert installation of solar panels, air source heat pumps, and AC. MCS accredited & Which? Trusted Trader. Get your free survey today.

• R R Lange Construction Ltd Northampton · Design & build · 1-9 employees

  Premium building services by R Lange Construction in Northamptonshire & Warwickshire. Contact us for quality craftsmanship.

• F Freedom Living Solutions Ltd Ashford · Design & build · 1-9 employees

  Specialist disability design and build company in Kent. Bespoke disability adapted and accessible property construction for homeowners and commercial

• P Prolectrical Ltd Faversham · Electrical

  Electricians in Faversham, Canterbury and Whitstable. We provide all aspects of electrical work to meet all your domestic and commercial requirements.

• N Nulectrics Ltd Chippenham · Electrical

  Our Qualified Electricians handle all types of electrical work. Punctual, Professional and Practical. Based in Chippenham, Wiltshire.

• A Atlas Roofing Construction Ltd Coulsdon · Roofing

  Trusted roofing company in Surrey providing roof repairs, replacements, flat roofing, guttering and chimney work. Free inspections and competitive quo

• N New Form Plumbing LTD Dartford · Plumbing · 1-9 employees

  Experts in water services: installation, maintenance, plumbing, heating, underfloor heating, bathroom fitting, interior & CAD design. Gas Safe registe

• B Bbm Plumbing And Heating Ltd Bristol · Plumbing

  BBM Plumbing & Heating Ltd, based in Bristol, offers a full range of plumbing and heating services including boiler installations, bathroom supply and

• C Costa Decoration Harrow · Painting & decorating · 1-9 employees

  Costa Decoration is a family-run business with over 20 years of experience in painting and decorating. They offer a wide range of services for both re

• A AS ELECTRICAL SERVICES Mansfield Woodhouse · Electrical

  AS Electrical Services provides safe, reliable, and professional electrical solutions for domestic, commercial, and industrial clients in Mansfield an

• B Brightwall Ltd Watford · Refurbishment

  Brightwall Limited is a Watford-based SME delivering high-quality compliance, maintenance, and refurbishment services across residential & social hous

• S Smiley Building Services South Croydon · Design & build · 1-9 employees

  Trusted local builders in Croydon, Bromley & West Wickham. House extensions, loft conversions & full refurbishments. TrustMark approved.

• L Lee Wright Plumbing & Heating Ltd Wrexham · Plumbing

  Providing services for all of your home maintenance requirements in and around Wrexham, including heating, plumbing, bathrooms and repairs.

• C Channel Electrical Systems Ltd Penarth · Electrical

  Channel Electrical is a certified installer specialising in renewable energy technologies and a wide range of electrical services for homes and busine

• A AGL UPVC SPRAYERS Stevenage · Windows & doors

  AGL uPVC Sprayers are a family-run business in Hertfordshire, specialising in spraying uPVC, aluminium, and composite windows, doors, and more. Founde

• 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

• M Mack Construction Ltd Sheffield · Main contractor

  Mack Construction, your trusted partner in Sheffield for New Builds, Conversions, Extensions, and Construction. Professional Service with Expert Manag

• C Cambs Heating Ltd Cambridge · Heating & ventilation

  Cambs Heating are specialists in boiler installation, heat pumps, air conditioning, and plumbing services in Cambridge. Offering expert advice, reliab

• I Ideal Heating & Gas Ltd Leicester · Solar PV

  Ideal Heating & Gas Ltd offers expert solar energy, boiler, and air source heat pump solutions for homes across the UK, focusing on sustainability and

• E Eco Made Simple Forever Limited Sutton Coldfield · Insulation

  Eco Made Simple Forever Limited offers ECO4, Solar PV, and Heat Pump installations to create sustainable green homes, combat fuel poverty, and improve

• C Crosby Roofing Services Ltd Wisbech · Roofing

  Crosby Roofing Services is a well-established, family-run roofing company with over 40 years of experience. Offering a full range of roofing, gutterin

• B Bluewave Group Ltd Braunton · Electrical

  Bluewave are North Devon trade specialists offering a wide range of services including renewables, electrical, construction, plumbing, lettings & proj

• E Eco Providers Ltd Bury · Solar PV

  Trusted solar, battery and energy specialists for homes, businesses and social housing. Octopus Energy Trusted Partner of the Year 2026.

• A Allstar Systems (Norwich) Ltd Norwich · Plumbing

  Allstar Systems is a family-run plumbing and heating company based in Norwich, established in 2011. They offer a wide range of domestic and commercial

• D Dorstan Ltd Solihull · Electrical

  Electrical contractors providing an extensive range of services which includes power & LED lighting upgrades, fire alarm systems & electrical testing.

• B Bs Plumbing And Heating Dm Ltd Dagenham · Plumbing

  BS Plumbing is a Gas Safe registered plumber offering affordable heating and plumbing Romford based services and solutions.

• C Centric Home Improvements Ltd Porth · Windows & doors

  Centric Home Improvements provides top-quality services for roofing, siding, and more, ensuring your home remains beautiful and well-protected year-ro

• R Renderright Finishes Ltd Kenilworth · Insulation

  RenderRight is a premier provider of energy efficiency measures including External Wall Insulation, Ventilation, Loft Insulation, Internal Wall Insula

• J JNF Roofing Grantham · Roofing

  JNF Roofing offers a full range of roofing services from minor repairs to full re-roofs and loft extensions. With 25 years of experience, they provide