TrustMark accredited companies in London

120 construction companies in and around London displaying TrustMark.

• S Smartstone Energy Solutions Ltd London · Insulation

  SmartStone cuts through funding complexities to deliver trusted & certified energy solutions for residential, commercial & public sectors.

• S Sol Solar Ltd London · Solar PV

  South East England's trusted solar experts, Sol Solar Ltd offers comprehensive solar PV and battery storage solutions for homes and businesses, saving

• S Solar Sparky Electrical Ltd London · Solar PV

  MCS-certified solar panel & battery storage installers serving London and South East England. Family-run, no pushy sales. Get a free quote today.

• S South London Conversions London · Refurbishment · 1-9 employees

  South London Conversions: Experienced, reliable and recommended building firm for home renovations, extensions, loft conversions, and commercial refur

• S Sp Group (Hull) Ltd London · Electrical

  SP Group is a family-run business with over 20 years of experience in electrical services, specializing in Solar PV, EV charging, and battery storage

• S Sparkpro Electrical Ltd London · Electrical

  Trusted West London electricians for installations, repairs & emergencies. Fast, certified electrical service across homes and businesses. Get a free

• S Streamline M&E Compliance Ltd London · Electrical

  One delivery partner for property compliance across electrical, gas, fire, energy, water and ventilation. Inspection, certification, remediation, clos

• S Sunsave UK Ltd London · Solar PV · 10-49 employees

  Save money on your bills and gain energy independence with Sunsave solar panel and battery solutions. Get a free quote today.

• S Sureserve Energy Services North Ltd London · Heating & ventilation · 50-249 employees

  Sureserve delivers high-quality solutions for housing associations and local authorities, ensuring energy efficiency, safe homes and better quality of

• T Taylors Electrical Ltd London · Electrical

  Taylors Electrical Ltd are Hemel Hempstead based Electricians with over 20 years of experience, serving domestic, commercial and industrial clients ac

• T The Bleu Group London · Main contractor

  The Bleu Group is a premium construction and development firm crafting exceptional new builds, extensions, renovations and commercial works.

• T The Energy Hub London · Solar PV

  Trusted solar panel installers offering bespoke services and 5-star customer ratings. Save on energy bills with expert solar, battery, and heat pump i

• T The London Kitchen Extensions Company Ltd London · Extensions · 1-9 employees

  Specialist construction company in South West London, with in-depth knowledge of local Victorian and Edwardian housing stock. Experts in side returns

• T Total Build Developers London · Refurbishment · 1-9 employees

  London-based construction company specialising in domestic and commercial buildings, offering loft conversions, extensions, refurbishments, and more.

• V Vision Refurbishments Ltd London · Refurbishment

  Vision Refurbishments delivers complete home renovations, bathrooms, kitchens, lofts and building work across Chiswick, Ealing and West London. Reques

• V VYSTRA GROUP LIMITED London · Refurbishment

  Vystra Group: one accountable partner for whole-house retrofit. PAS 2035 assessment, coordination and design, EPCs, air permeability testing and lodge

• W Watt Chargers London · Electrical

  Watt Chargers Ltd provides electrical services for domestic, industrial, and commercial applications, specializing in EV charger installation, solar p

• W WP Rendering London · Plastering

  Dedicated Rendering & Lime Plastering Professionals. Specialists in Insulated Lime Rendering, Traditional Lime Plastering, External Wall Insulation (E

• Y Yasmeen Property Services Ltd London · Main contractor

  Yasmeen Property Services is a premium building firm in Northwest London, specialising in residential and commercial design and build, refurbishments,

• Y YESS ECO Solutions London · Insulation

  YESS ECO Solutions LTD offers complete energy solutions, including insulation upgrades, heating solutions, and renewable energy installs, working with