Main contractors in London

1935 main contractors across London.

• B Barcap Ltd Epsom Downs · Main contractor · 1-9 employees

  Barcap Ltd is a Surrey-based building company offering a comprehensive range of services including extensions, conversions, new builds, and refurbishm

• B Barkas Ltd Hertfordshire · Main contractor · 1-9 employees

  Barkas Limited is a family run business offering a personal touch to all construction and development projects, from planning to completion.

• B Barnfield Homes (Keston) Ltd Sutton · Main contractor

  Barnfield Homes (Keston) Ltd is a main contractor company based in Sutton, registered at Companies House in 2014.

• B Bartley Building Renovation Ltd Sutton · Main contractor · 10-49 employees

  Bartley Building is a company which manages projects ranging from social housing, renovations, construction, planning & designing aswell as property m

• B Basa Construction Chigwell · Main contractor

  BASA Construction offers trusted building, renovation & extension services UK. Professional, on time, and within budget. Request a free quote!

• B Base Build Services Ltd London · Main contractor · 10-49 employees

  Base Build are a Principle Contractor offering a full construction service across Traditional, Design & Build and Management forms of contracting. Est

• B Basicframe Inc Ltd London · Main contractor · 1-9 employees

  Basicframe Inc LTD is a specialized temporary workforce company providing skilled labour for construction sites across England. They offer flexible pl

• B Bask Construction Ltd London · Main contractor

  Bask Construction Ltd is a construction company based in London, UK.

• B Baskent Consulting LTD London · Main contractor · 1-9 employees

  Baskent Consulting LTD is a multinational consultancy established in 1996, operating in global trade and industrial property rights. With expert staff

• B Battistel Shop Fitting And Building Contractors Ltd London · Shopfitting · 10-49 employees

  Battistel Shopfitting & Building Contractors are a London based company with over 30 years experience in the building & shopfitting industry.

• B Baylight Properties Ltd London · Property developer · 1-9 employees

  Baylight Properties have been developing commercial and mixed use property in London for over 30 years. View our portfolio, read more about us or get

• B Bcm Steel Erecting&Fitting Ltd London · Refurbishment · 1-9 employees

  Building Construction Management is dedicated to delivering exceptional results with quality craftsmanship and client satisfaction. We bring your visi

• B Beale Halai Ltd Kings Langley · Main contractor · 10-49 employees

  One stop shop for all your design and construction requirements. Principal contractor backed by a healthy sub-contractor supply chain.

• B Beam Development London · Main contractor

  Beam is a full-service construction company specialising in restoring, renovating, and building bespoke, premium residential homes. They offer a syste

• B Beamfast Limited Hainault · Refurbishment · 10-49 employees

  Beamfast is a construction specialist working on commercial, education, community, healthcare, and residential projects. Founded in 1987, they offer r

• B Bechtel Management Company Ltd London · Main contractor

  A trusted name in engineering, construction, procurement & project management, creating sustainable solutions that drive global progress since 1898.

• B Beckford Contractors Ltd Sidcup · Main contractor · 10-49 employees

  BECKFORD CONTRACTORS LIMITED is a construction company based in Sidcup, Kent.

• B BEL Group Redbridge, Ilford, London · Extensions

  BEL Group provides expert planning consultancy, architectural design, structural engineering, and Party Wall surveying for homeowners, developers, con

• B Bellevue Group London · Main contractor

  Bellevue Group is an asset manager focused on the healthcare sector, small and mid-cap entrepreneur space, and multi-asset strategies. They aim to red

• B Bem Projects Ltd Rainham · Main contractor

  BEM Projects is a family-run Building, Engineering & Management company with 30+ years of experience providing comprehensive construction solutions.

• B Benchmark Cleaning Services Ltd London · Refurbishment · 10-49 employees

  Benchmark Cleaning Services offers professional commercial cleaning solutions across London, specializing in office, retail, healthcare, and education

• B Beni Builders London Edgware · Main contractor · 1-9 employees

  Beni Builders London LTD is a London-based construction company with over 20 years of experience. We offer a wide range of building services including

• B Bennett Construction (London) Ltd London · Main contractor

  Bennett Construction is an international construction and services company founded in 1917, with offices in Ireland, the UK, and Germany. They focus o

• B Benning Construction Ltd Ilford · Main contractor · 1-9 employees

  Benning Construction Ltd offers high-end new builds and refurbishments for public sector, residential, and commercial clients across London and Essex.

• B Benpol Greenford · Main contractor · 1-9 employees

  Benpol is a premium construction company based in London, specialising in new builds, home refurbishments, bespoke joinery, loft conversions, extensio

• B Berati Construction Ltd London · Main contractor · 1-9 employees

  Berati Construction Ltd delivers high-quality residential and commercial projects in London, including new builds, extensions, loft conversions, refur

• B BERINTAN CONSTRUCTION WORK LTD London · Main contractor · 1-9 employees

  Berintan Construction is a specialist recruitment agency for the UK construction industry, providing experienced professionals across various discipli

• B Bertstructure Ltd London · Main contractor

  Professional construction services for domestic and commercial projects. Based in London, serving the UK with quality construction solutions.

• B Besjon Construction Ltd Dagenham · Extensions · 1-9 employees

  BESJON Construction offers expert home extensions, renovations, and commercial construction services in London. Quality craftsmanship to bring your vi

• B Bespoke Build (Surrey) Ltd Weybridge · Refurbishment · 1-9 employees

  Bespoke Build Surrey specialises in high-end residential building services including refurbishments, extensions, loft conversions, and new builds acro

• B Bespoke Home Builder Ltd London · Main contractor · 1-9 employees

  Bespoke Home Builder is an online destination for high-quality construction tools, offering a curated selection of pro-grade equipment. They focus on

• B Bespoke London Developments Ltd London · Property developer · 1-9 employees

  Bespoke London Developments Ltd offers property investment and traditional construction services, with over 20 years of experience in the property ind

• B Best Agricultural Support Ltd London · Property developer · 1-9 employees

  Best Agricultural Support Ltd is a UK provider of used agricultural machinery, supplying farmers nationwide with essential equipment and building key

• B Best Care Construction Ltd Tooting · Property developer

  Best Care Construction Ltd is a property developer company based in Tooting, registered at Companies House in 2025.

• B Better Home Company Mayfair · Main contractor

  TBHC Projects Ltd, trading as Better Home Company, is a new company incorporated in 2026. Currently, its website is under development.

• B Bfc Contracts Ltd Ilford · Main contractor

  Specialists in construction, renovation and bespoke outdoor spaces across London and the UK. Structural works, basements, terraces and natural stone f

• B Bfix Ltd London · Refurbishment

  BFIX offers expert building contractor services for luxury home construction, commercial projects, and interior design. Book a consultation today!

• B BG Construct London · Main contractor

  B & G Construct Ltd offers bespoke new builds, loft conversions, and home extensions. With over 15 years of experience and 50+ projects completed, the

• B Bginfo Ltd London · Main contractor · 1-9 employees

  BGINFO LTD develops and operates digital media platforms, mobile applications, online communities and technology products in the United Kingdom.

• B Bhangu Roofing Ltd Feltham · Roofing · 1-9 employees

  Bhangu Roofing Ltd offers professional roofing and building services across West London. New roofs, repairs, extensions, brickwork and more. Call 0738

• B Big Builder Ltd Dagenham · Main contractor · 1-9 employees

  Big Builder Ltd is a main contractor company based in Dagenham, registered at Companies House in 2015.

• B BIG GATES Ilford · Main contractor

  BIG GATES offers cutting-edge laptops and desktops, built for performance, style, and reliability. Elevate your digital world with our tech crafted fo

• B Bildex Ltd London · Refurbishment

  BILDEX LTD is a dynamic construction company offering a comprehensive range of services across the UK. We specialise in refurbishment, fit-out, and ne

• B Bilt Renovation Ltd Croydon · Main contractor

  Bilt is a bespoke residential construction company offering unparalleled services from consultancy through to final finishes. We specialise in full re

• B Biodiverse Enterprise Ltd Rickmansworth · EV charging

  Biodiverse Enterprise Ltd offers sustainable construction, green energy, EV charging, and carbon support services to help organisations manage green p

• B Birchley London · Main contractor

  Birchley is a design-focused construction company specialising in the delivery of outstanding private residences, transforming ambitious visions into

• B Bisha Contractors Ltd Palmers Green · Main contractor · 1-9 employees

  Bisha Contractors Ltd offers a comprehensive range of building services including new builds, loft conversions, extensions, and refurbishments. With o

• B Bison Commercial Ltd London · Refurbishment

  Bison Works is a London-based construction company specialising in commercial refurbishment, development, and fit-out projects. They offer a client-fo

• B Bitri Ltd London · Main contractor · 1-9 employees

  Bitri Ltd is a leading construction company in Hendon, offering architectural solutions for dreams. With expert teams, we ensure quality craftsmanship

• B Black & Veatch (U.K.) Ltd London · Main contractor · 250+ employees

  Black & Veatch is a global engineering, procurement, consulting and construction company specializing in infrastructure development.