Main contractors in the UK

20744 UK companies working as main contractors.

• O Osborn & Kent Construction Ltd. Wymondham · House builder · 10-49 employees

  Osborn & Kent Construction are skilled bricklayers and new home developers in Norfolk. Established 2012, they offer bespoke brick cutting and renovati

• O Osborn Construction Ltd Uckfield · Main contractor · 1-9 employees

  Osborn Construction offers comprehensive, top-quality construction services for residential and commercial projects. Our experienced team handles ever

• O Osborn Design & Build Ltd Colchester · Design & build · 1-9 employees

  Osborn Design & Build offers expert building and design services for new builds, extensions, conversions, and hard landscaping in Essex and beyond. Wi

• O Osborn Property Renovations Ltd Truro · Refurbishment · 1-9 employees

  Osborn Property Renovations Ltd is a family-run home renovation company based in Mid Cornwall, with over 30 years of combined experience.

• O Osborne Building & Renovations Ltd Sudbury · Extensions · 1-9 employees

  Osborne Building & Renovations Ltd specialists in home extensions, loft conversions & major renovation building work across Suffolk. Quality craftmans

• O Osborne Carpentry & Construction Ltd Billingshurst · Carpentry & joinery · 1-9 employees

  Osborne Carpentry & Construction Ltd is a family-run business with attention to detail and customer satisfaction at its core. We project manage your d

• 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 Ostconstruct1 Ltd London · Bricklaying

  Serious craftsmanship, fair prices, fast completion. Specialists in brickwork, masonry, extensions and exterior works for residential and commercial p

• 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 Oti Design And Build Ltd Loughborough · Design & build · 1-9 employees

  OTI Design and Build is a dynamic building company with over 20 years of experience in domestic and commercial property development, offering a full r

• O Otisbum Ltd Sunderland · Main contractor

  Otisbum Engineering & Construction Company Ltd offers high-quality building, renovation, maintenance, and engineering solutions for residential, comme

• O Otley Roofing And Building Ltd Otley · Roofing · 1-9 employees

  A highly-regarded building and roofing company offering a variety of domestic and commercial roofing and building services throughout Otley and surrou

• O Otm Construction Ltd Bristol · Main contractor · 1-9 employees

  Experienced builders delivering safe, reliable and lasting results from your trusted partner in construction. OTM Construction offers a range of build

• O Otterburn Construction Ltd London · Refurbishment · 1-9 employees

  Otterburn Construction provide exceptional construction services, with a skilled and experienced team committed to delivering results that exceed expe

• O Otters Group Ltd London · Refurbishment · 1-9 employees

  Otters Group is a family-owned construction business established in 2018, providing expert residential and commercial services including renovations,

• O Our Mep Co. Ltd Fareham · M&E contracting

  Expert MEP design, installation & maintenance in Hampshire. Delivering quality, efficiency & energy-saving solutions for your building project. Get in

• O Our Space Ltd Waterlooville · Main contractor · 1-9 employees

  Our Space Ltd is a trusted main contractor for construction, groundworks & landscaping for homeowners and the public sector across Hampshire.

• O Ourhouselondon Ltd Bromley · Refurbishment

  Our House London is a construction company in London, offering refurbishment, painting, carpentry, kitchen and bathroom fitting services with a focus

• O Out Build Group Ltd. Sidcup · Loft conversions · 1-9 employees

  Out Build Group specialises in helping homeowners in Kent, London and Essex transform their properties with loft conversions, extensions, and full hom

• O Outdoor Schemes Ltd Maidstone · Landscaping

  Outdoor Schemes creates engaging, practical, and inclusive outdoor play spaces for schools, nurseries, councils, and community groups across the UK.

• O Outer London Surfacing Stevenage · Road surfacing

  Professional Road Surfacing Contractors in Hertfordshire. Providing Expert Patio, Driveway and Landscaping Work For Commercial & Residential Propertie

• O OuterRoom Banstead · Design & build · 1-9 employees

  OuterRoom designs, manufactures and installs luxury garden rooms in Surrey and outer London. Bespoke insulated garden buildings built to last.

• O Outline Construction Ltd Sheffield · Main contractor

  Sheffield-based construction experts offering superior workmanship across new builds, extensions, loft conversions, remodels, refurbishments, and besp

• O Outlook Roofing Ltd London · Roofing

  Outlook Roofing Ltd specialises in UPVC, roof repairs, new roofs, rubber, felt, and GRP fibreglass flat roofs in London.

• O OUTPOST PROJECTS LTD Havant · Landscaping

  Outpost Projects Ltd offers expert landscaping and groundworks services in Portsmouth, Southampton, Chichester, and Petersfield. Transform your outdoo

• O Outside In Garden Rooms Glasgow · Design & build

  Outside In Garden Rooms designs, builds and installs bespoke, insulated, and sustainable garden rooms and modular buildings in Scotland.

• O OUTSIDERS GARDEN ROOMS Borehamwood · Design & build · 1-9 employees

  Luxury bespoke garden rooms designed and created with you in mind. Add value to your property with a multi-use space, high quality design, and tailor-

• O OUTWEST CIVIL ENGINEERING Birmingham · Civil engineering

  OUTWEST Construction are a Civil Engineering contractor specialising in groundworks, roads and drainage, demolition, from the West Midlands, serving h

• O Ovadia Construction Ltd London · House builder

  Ovadia Construction Ltd offers extensions, renovations and new builds with expert craftsmanship. Looking for a trusted construction company in the UK?

• O Oval Park Construction Ltd Northampton · Groundworks

  Groundworks and construction specialists based in Olney for over 15 years. Specialising in groundworks, residential and commercial new builds.

• O Ovamill Ltd Great Yarmouth · Main contractor · 50-249 employees

  Ovamill provides quality construction services and operational excellence through efficient planning, communication and competitive pricing. We tailor

• O Ovenden Allworks Ltd Canterbury · Civil engineering

  Ovenden Allworks is a family-owned construction company based in Kent, specialising in civil engineering, groundworks, earthmoving, and surfacing. Wit

• O Ovenden Earthmoving Co Ltd Canterbury · Groundworks · 10-49 employees

  UK specialist contractor for earthmoving, on-site crushing & recycling, and flood, coast & marine defences. Sustainable solutions, reliable delivery n

• O Ovenden Plant Hire Ltd Canterbury · Plant hire · 10-49 employees

  Ovenden Plant Hire provides reliable plant and machinery hire across the UK. From excavators and dump trucks to rollers and attachments, we offer flex

• O Overbecks Office Solutions Hassocks · Fit-out & interiors

  Complete office refurbishment and office interior design services, logistical move management and build services across the UK and Europe.

• O Overhall Contractors Ltd North Lincolnshire · Civil engineering · 50-249 employees

  Overhall Contractors is a family-run civil engineering and groundwork contractor based in North Lincolnshire, with over 30 years of experience deliver

• O OVERHAUL PROPERTY DEVELOPMENTS LTD Worthing · Refurbishment

  Family-run building business established 2007, with over 30 years experience. Specialising in loft conversions, extensions, kitchens, bathrooms, and g

• O Overstones Ltd Congresbury · Design & build

  Overstones Ltd - Design & Build specialists based in Congresbury North Somerset. Extensions, roofing, fencing or kitchen/bathroom conversions. We do i

• O Overstones Plastering Ltd Bristol · Design & build

  Overstones Ltd is a family-run residential building company in North Somerset, established in 2005. We specialise in extensions, renovations, kitchens

• O OVERTON BATHROOM CENTRE LIMITED Basingstoke · Bathroom fitting · 1-9 employees

  Overton Bathroom Centre Ltd is an independent bathroom retailer in the South of England, offering fully fitted or supply-only bathrooms. They work wit

• O Ovi Construction Ltd Romford · Civil engineering · 1-9 employees

  OVI Construction Company Limited is a Nigerian-based multidisciplinary construction and engineering company delivering end-to-end infrastructure solut

• O OVIDIU PREMIER JOINERY & CARPENTRY LTD London · Shopfitting

  Ovidiu are a premium shopfitting and carpentry company who have worked with the biggest clients in Mayfair, Bond Street in London, and throughout the

• 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 OWD Group Oswestry · Windows & doors

  OWD Group specialises in home improvements, refurbishments, renovations, and construction services in Oswestry and surrounding areas. Contact us for a

• O Owen & Palmer Ltd Bangor · Electrical

  Leading industrial electrical contractor servicing North & Mid Wales, managing installations, construction and facilities for complete solutions and a

• O Owen Contractors Ltd Hailsham · Bricklaying · 10-49 employees

  Owen Contractors Ltd is a leading brickwork and scaffold contractor serving the South East of England. Established in 1999, we offer high-quality serv

• O Owen Developments (Worcester) Ltd Malvern · Design & build

  Owen Developments is a family-run building construction company providing design and build services across Worcestershire and Herefordshire. With over

• O Owen Evans Construction Aberystwyth · Main contractor

  Owen Evans Construction offers high-quality building and extension services in Mid-Wales, blending traditional Welsh craftsmanship with modern techniq

• O OWEN GIBB AND SONS LTD Edinburgh · Heating & ventilation · 10-49 employees

  Owen Gibb & Sons Ltd is a specialist main contractor in Edinburgh, The Lothians & Fife, offering a wide range of trades and services for property reno

• O Owen Pell Ltd Hereford · Main contractor · 10-49 employees

  Owen Pell is a construction and civil engineering contractor established in 1976, serving Herefordshire and surrounding counties. They offer a wide ra