Main contractors in London

1942 main contractors across London.

• O Oldfield Construction (London) Ltd Ruislip · Main contractor · 1-9 employees

  Oldfield Construction Limited offers home improvements in Ruislip. Qualified builders with 51+ years of experience, delivering durability and reliabil

• O Omb Construction Ltd Pinner · Main contractor · 1-9 employees

  OMB Construction Ltd is a construction company based in Pinner, Middlesex. The company was incorporated in 2019.

• O Omega + Group Ltd London · Main contractor · 1-9 employees

  Omega Group is a leading construction and MEP contractor based in West London, delivering high-value projects across residential, commercial, and mixe

• O Omfc Ltd London · Main contractor · 1-9 employees

  OMFC Ltd is a construction company based in London, undertaking a variety of projects across residential and commercial sectors. They focus on deliver

• O Omikon Construction Ltd London · Design & build

  Omikon Construction Limited is a London-based construction company offering quality, reliable, and sustainable services. We combine innovation and exp

• O Omniform Ltd London · Main contractor · 1-9 employees

  Omniform is a London construction partner for architect-designed homes: whole-house refurbishments, structural work, basements, and new build properti

• O Omniscience Care Ltd London · Main contractor · 10-49 employees

  Omniscience Care is a specialist partner in complex built-environment projects, aligning design, safety, and commercial outcomes for resilient, high-p

• O OMNYRA London · Main contractor

  OMNYRA provides execution-led leadership for high-risk industrial projects, shutdowns, and major hazard environments, restoring authority and control.

• O On Point Building & Joinery London · Main contractor · 1-9 employees

  On Point Building & Joinery Ltd offers expert building and joinery services in Blackpool and the North West. Quality craftsmanship for every project,

• O One Arch Ltd Waltham Cross · Main contractor · 1-9 employees

  One Arch Ltd is a main contractor company based in Waltham Cross, registered at Companies House in 2022.

• O OPTIESTIMATES London · Main contractor

  OptiEstimates offers expert quantity surveying and construction consultancy services in the UK and USA. With over 1000 completed projects, we provide

• O Optimal Developments Ltd London · Main contractor · 1-9 employees

  Builders in King's Lynn with 36 years on the tools. New builds, extensions and renovations across West Norfolk, all backed by our 12-month snagging gu

• O Optimum Bid Services London · Property developer · 1-9 employees

  Optimum Bid Services is a UK-based bid and tender writing consultancy, specialising in helping construction contractors win public and private sector

• O Orama Contracts London · Main contractor · 1-9 employees

  Orama Contracts is a construction recruitment and subcontracting firm, part of the Orama Group, offering flexible workforce solutions and trade packag

• O Orange Construction (UK) Ltd Ashford · Main contractor · 1-9 employees

  Orange Construction UK Ltd. offers high-quality construction, refurbishment, and landscaping services for residential and commercial buildings, delive

• O Orchard Building Solutions Ltd Richmond · Main contractor · 1-9 employees

  Orchard Building Solutions provides planned and reactive maintenance, refurbishments, office fit-outs, extensions, and loft conversions for residentia

• O Ordon Ltd Dartford · Main contractor · 1-9 employees

  Ordon Ltd is a building contractor based in London, focused on providing high-quality service and customer satisfaction. They offer a range of service

• O Orlando Stone Ltd Borehamwood · Main contractor · 1-9 employees

  ORLANDO STONE LTD is a company registered in England. The company's website is orlandostone.co.uk.

• O Osn Development Ltd Hayes · Main contractor

  OSN Development Limited is a construction company based in Hayes, England, offering a wide range of expert home improvement and building services. The

• O OT Construction Potters Bar · Main contractor · 1-9 employees

  OT Construction offers a comprehensive range of building and design services for commercial, domestic, and interior projects. With a focus on reliabil

• O Our Best Builder Ltd Waltham Abbey · Main contractor

  Our Best Builder Ltd is a main contractor company based in Waltham Abbey, registered at Companies House in 2025.

• O Ovk Construction Ltd London · Main contractor · 1-9 employees

  OVK Construction offers Building and Maintenance services: Interior and Exterior renovation, Plumbing and Electrics, Extensions, Loft Conversions and

• O Owen Construction Consultancy Ltd Orpington · Main contractor

  Construction Health & Safety Consultants offering services in London, Kent & Essex. Experienced consultants ensure safe and compliant projects.

• O Owenbuilds Ltd London · Main contractor

  OWENBUILDS LTD is a new company based in London, UK. The company's website is currently under development.

• P P.A. Finlay & Company Ltd London · Main contractor · 10-49 employees

  We collaborate with forward thinking clients to deliver assured, long-term value in their built assets. P A Finlay & Co Ltd offers construction and ma

• P P.C Construction (UK) Ltd Stanmore · Property developer · 1-9 employees

  P.C Construction UK Ltd is a flexible, innovative and results-oriented developer of residential and commercial property, based in Stanmore.

• P P.J. Carey (Contractors) Ltd London · Main contractor · 250+ employees

  P.J. Carey (Contractors) Ltd is a main contractor company based in London, registered at Companies House in 1979.

• P P.J. Hegarty & Sons (U.K.) Unlimited Staines-Upon-Thames · Main contractor · 10-49 employees

  PJ Hegarty & Sons is a construction company with a 100-year history, offering building and civil engineering services. They specialize in large, compl

• P P&T Building Ltd London · Main contractor · 1-9 employees

  P&T Building Limited is a construction company founded in 2015, undertaking commercial, government, and private building projects.

• P P6 Planning Ltd London · Main contractor · 1-9 employees

  Expert project management, planning, and project control solutions for complex infrastructure projects across the UK. Decades of experience in high-va

• P Packers Property Maintenance Company Ltd London · Carpentry & joinery

  Packers Property Maintenance Company Ltd offers joinery, heating & plumbing, building, painting, plastering and damp proofing services across the Nort

• P Pal Build Ltd London · Main contractor · 1-9 employees

  Pal Build Ltd is a main contractor company based in London, registered at Companies House in 2018.

• P Paneltrend (London) Ltd London · Main contractor · 1-9 employees

  Paneltrend (London) Limited offer construction and refurbishment of high quality residential and commercial projects. Experienced team.

• P Panzer Construction London · Main contractor · 1-9 employees

  Experienced construction project manager in London and surrounding areas. Your trusted partner for quality construction projects.

• P Paramountbuilt Ltd London · Main contractor

  Paramountbuilt Ltd is a new company based in London, UK. We are currently developing our online presence.

• P Parkeray Interiors Ltd London · Fit-out & interiors · 50-249 employees

  Parkeray is a professional main contractor specialising in the fit out and refurbishment of office buildings and commercial premises within London.

• P Passion Solutions Ltd Uxbridge · Main contractor · 1-9 employees

  This website is under construction. Come back soon to see what it's like. Build your dream website fast and easy, without any coding.

• P Patterson Construction Ltd London · Main contractor · 1-9 employees

  Patterson Construction is a family-owned construction company delivering complex refurbishment and commercial construction projects throughout London

• P Pavehall Public Ltd Company London · Main contractor

  Pavehall Group is an award-winning CIOB Chartered Building Company and RICS regulated Contractor specialising in large-scale Cladding and Fire Safety

• P Pawan Construction Ltd Belvedere · Main contractor · 1-9 employees

  Pawan Construction Ltd offers comprehensive construction services, specializing in residential, commercial, and renovation projects. We focus on quali

• P Pbl Group Ltd Upminster · Main contractor · 1-9 employees

  Pbl Group is a multi-disciplined contractor with an excellent reputation covering sectors including housing, education, public buildings and commercia

• P Pearl Builders & Stone Restoration Ltd Orpington · Main contractor · 1-9 employees

  Pearl Builders And Stone Restoration Ltd is an established and reliable company with over 35 years experience in the building trade. Based in Orpingto

• P Pekabex Construction Ltd London · Main contractor

  Pekabex is an international construction company, a leading manufacturer of prefabricated elements, a general contractor, and a developer with extensi

• P Pemberton FM London · M&E contracting

  Pemberton FM offers comprehensive facilities management, mechanical, electrical, and building maintenance services across the UK, ensuring seamless op

• P Pencil And Brick Ltd London · Main contractor

  Pencil And Brick Ltd is a main contractor company based in London, registered at Companies House in 2019.

• P Pepperbuild Ltd London · Main contractor · 1-9 employees

  PepperBuild is a London-based main contractor and project manager specializing in high-end refurbishments and new homes. They focus on delivering care

• P Perfect Contractors UK Ltd Staines-Upon-Thames · Main contractor · 1-9 employees

  Perfect Contractors UK Ltd is a main contractor company based in Staines-Upon-Thames, registered at Companies House in 2020.

• P Perfect Living Services London · Refurbishment

  Perfect Living connects UK and Texas property services, Dubai-based websites and AI automation, and Perfect Living OS for service businesses.

• P Permasteelisa (UK) Ltd London · Main contractor · 50-249 employees

  The leading international façade specialist, shaping city skylines worldwide with innovative, sustainable, high-performance building solutions from de

• P Persis Development London · Property developer

  Persis Development Ltd offers luxury real estate solutions for high-net-worth individuals, focusing on innovation and sustainability in property inves