Subcontractors in London

3197 construction subcontractors based in and around London.

• I Impero Facilities London · M&E contracting

  Impero Facilities is a leading facilities management firm dedicated to maintaining the highest standards for London's prestigious properties. With ext

• I Impressive Paint Ltd London · House builder

  Impressive Paint Limited offers professional house construction, renovation, and landscaping services across London. Specialising in residential prope

• I Improvex Construction London · Refurbishment

  Instantly get accurate quotes for your home improvement projects. Connect with trusted contractors and book site visits with ease.

• I Impulse Mep Ltd London · M&E contracting · 10-49 employees

  Impulse MEP offers top-quality electrical and mechanical services for residential, commercial, and industrial properties. From rewiring and HVAC syste

• I Ims Fire Protection Ltd London · Fire protection · 1-9 employees

  IMS Fire Protection Limited are specialists in passive fire protection including intumescent paints, fire boarding, firestopping and fire barriers.

• I IMS Ignite Maintenance Services London · M&E contracting · 10-49 employees

  IMS Ignite Maintenance Services offers reliable, budget-conscious experts for a range of building services, from leak fixes to AV system installations

• I IN-TECH Scaffolding London · Scaffolding

  IN-TECH Scaffolding provides a full range of services in the scaffolding industry including design, transport, assembly, dismantling, hire and servici

• I Industry Decorators London · Painting & decorating · 1-9 employees

  Industry Decorators are family-run painters and decorators in London. Interior & exterior painting, spraying and commercial decorating. 5-star rated.

• I INFINITY HEATING SOLUTIONS AND PROPERTY MAINTENANCE LTD London · Heating & ventilation

  Gas Safe registered engineers for boiler installation, servicing and rapid repairs across Birmingham, Great Barr, Sutton Coldfield and surrounding sub

• I Infrastructure Cabling Experts London · Electrical · 1-9 employees

  Infrastructure Cabling Experts are a nationwide specialist data cabling company. We deliver comprehensive data cabling solutions, design, installation

• i inGeni Construction and Renovation London · Restoration & heritage

  Leading heritage builders in Essex specializing in listed building restoration, barn conversions, oak framing, and bespoke construction services acros

• I Initial Interiors London · Refurbishment · 1-9 employees

  London's commercial office refurbishment and fit-out specialists. With nearly 20 years of experience, we deliver bespoke solutions on time and on budg

• I Injoinery UK Ltd London · Carpentry & joinery · 1-9 employees

  London and Cotswolds based joinery installation service. Blending craftsmanship with innovation. Trusted installers since 2019.

• I Inner Warmth Ltd London · Plumbing · 10-49 employees

  Specialist mechanical installers offering design, installation, and commissioning of high-quality plumbing and heating systems for residential and com

• I Innovative Utilities (UK) Ltd London · Utilities · 10-49 employees

  Innovative Utilities (UK) Limited is a privately owned Utility & Civil Contractor operating throughout the UK, with a strong focus on water and gas in

• I Inoval Ltd London · Carpentry & joinery

  High end, handcrafted staircase designs tailored to your home. Experienced staircase designers. Modern & traditional styles. Metal staircases, spiral

• I INOX CITY London · Steel fabrication · 1-9 employees

  Premier Architectural Steel & Glass Fabrication Specialist in London. Bespoke balustrades, handrails, balconies, staircases, and more. Design, supply,

• I Inoxos Ltd London · Heating & ventilation

  INOXOS is recognized as one of the most innovative and reliable companies in the sheet metal works sector. With years of experience, a commitment to q

• I InstaGasWorks London · Plumbing

  Gas Safe registered plumbers and heating engineers across South London. Boiler repairs, servicing, installation and 24/7 emergency plumbing. Call 0208

• I Installio Ltd London · Solar PV

  Installio delivers clean energy upgrades as one connected system, helping improve EPC ratings and reduce household energy bills. From solar and batter

• I Instant Builders Ltd London · Extensions

  Instant Builders Ltd offers high-quality, professional, and reliable construction services in London, specializing in house extensions, loft conversio

• i instant designer LTD London · Kitchen fitting

  Instant Designer is a premier construction company specializing in kitchens, bathrooms, flooring, roofing, electrical, plumbing, painting, and landsca

• I Instant Heating and Plumbing Services Ltd London · Plumbing

  Instant Heating & Plumbing provides expert plumbing, boiler repairs, heating services, gas safety services in London, Wembley, Neasden, Dollis Hill, a

• I INSULATE MY CONSERVATORY LTD. London · Roofing

  Family-run business specialising in conservatory roofing, insulation, and roof repairs across the UK. Offering expert services to make conservatories

• I INSULATION SPECIALISTS LTD London · Insulation

  Insulation Specialists Ltd offers expert insulation services, focusing on renewable and environmentally friendly energy sources to create comfortable

• I Insulpro Roofing Ltd London · Roofing

  Insulpro Roofing Limited is a UK-based company specializing in roofing and insulation services. Contact us for your project needs.

• I Integral Cooling Technologies London · Heating & ventilation

  Integral Cooling Technologies specialises in tailored, independent cooling solutions for efficient, resilient, and sustainable built environments. Par

• I Integrate Fitouts Ltd London · Fit-out & interiors

  Integrate Fitouts Ltd is a premier interior construction contractor specializing in office fitouts, shopfitting, and refurbishment work for commercial

• I Integrated Scaffolding Services Ltd London · Scaffolding

  Integrated Scaffolding Services Ltd offers professional scaffolding solutions across the UK. We provide safe, reliable, and efficient scaffolding hire

• I Integro Fitout Ltd London · Fit-out & interiors

  Integro is a leading retail fit-out company and shop fit-out contractor working across the UK, delivering exceptional retail environments for customer

• I INTEKRON Electrical Ltd London · Electrical

  INTEKRON Electrical Ltd is a London-based electrical contractor providing installations, EICR testing, and remedial works for commercial and residenti

• I Interfix Scaffolding Ltd London · Scaffolding · 1-9 employees

  Interfix Scaffolding Ltd are an independent scaffolding contractor based in Central London providing a safe and reliable service.

• I Interior Psd Ltd London · Refurbishment · 1-9 employees

  Interior PSD Ltd is a building company in North West London offering a wide range of services including loft conversions, extensions, renovations, and

• I Interlocks London · Security systems

  Expert locksmith services in Gravesend, offering 24/7 emergency support, precise lock fitting, and non-destructive entry. Safeguard your property with

• I International Air-Conditioning London · Air conditioning

  Your trusted partner for HVAC solutions, Highly rated Airconditioning company ensuring comfort and efficiency in every space.

• I International Windows Group Ltd London · Windows & doors · 1-9 employees

  Bespoke timber windows and doors in London. Made to measure, expertly installed, and built to last. Get your free quote today.

• I Intex Finishing Ltd London · Painting & decorating · 1-9 employees

  Prime residential painting and decorating contractors and installers of fine wallpapers and coverings based in London.

• I IQ Plumbing London London · Plumbing

  IQ Plumbing is London's leading provider of expert plumbing, heating, and boiler services. Available 24/7 for emergencies. Gas Safe registered and ful

• I Iralia Renovation Ltd London · Refurbishment

  Iralia Renovation Portal manages 1 data type including enquiries. Helps you organize, track, and share your work in 1 place for teams and solo users.

• I Iron Flag global London · Electrical

  Iron Flag Global specialises in mission-critical power infrastructure decommissioning and asset recovery across the UK and Europe. They manage valuati

• I Iropeaccess Ltd London · Scaffolding

  Specialist rope access company providing work-at-height services across London and the UK. IRATA certified. Get a free quote today.

• i iSecurity Systems Limited London · Security systems · 1-9 employees

  Ensure your safety with iSecurity's CCTV, intruder alarms, and access control systems. Managed solutions include BT Redcare or standalone speech diale

• I Islington Electrical London · Electrical

  Islington Electrical Limited offers a full range of professional electrical services including EICR Certificates, Commercial Services, New Installs, P

• I Iv Yo Carpentry Ltd London · Carpentry & joinery

  IV YO CARPENTRY LTD is a family business established in 2019, specialising in bespoke furniture manufacturing. We offer high-quality, custom-made MDF

• I Ivell Plumbing & Heating Ltd London · Plumbing

  Ivell Plumbing & Heating Ltd offers 24/7 emergency plumbing, boiler breakdowns, gas safety inspections, central heating installation, and leaky pipe r

• J J & G Contractors Ltd London · Refurbishment

  J&G Contractors Ltd is a family-owned business specialising in property management, offering a wide range of services from major projects to planned m

• J J A Brooks Mechanical Services Ltd London · M&E contracting · 50-249 employees

  JA Brooks is a mechanical services company designing, manufacturing, and fitting systems for water supply, sanitation, heat, fresh air, and gas across

• J J F TORO London · Carpentry & joinery

  JF Toro Ltd offers expert carpentry and woodworking services, specializing in kitchens, decking, doors, and fitted wardrobes. With 20 years of experie

• J J O'Connor London · Heating & ventilation

  J O'Connor is a national mechanical and electrical contractor established over 25 years ago, serving public, commercial, and private sectors with a 24

• J J Pearson Trading Ltd London · Heating & ventilation

  Professional boiler installations, central heating, MVHR systems & plumbing services across London. 20 years experience. Same-day callouts available.