- YJL plc
 - Operates three multi-disciplined development contractor companies. - A.C Lloyd Ltd.
- Building contractor and developer to the public and private sectors.
- Alfred McAlpine
- Offers a diverse range of services focused on the built environment including public infrastructure and utilities maintenance, construction and civil engineering projects, outsourced facilities and IT management services, and PFI solutions.
- Barratt Homes (2)
- Bouygues UK
- Designs and builds residential and corporate properties.
- BR Hodgson Group
- Group of companies providing specialist trade packages to major building contractors, construction managers, and management contractors.
- Bramall Construction
- Specializes in community regeneration and the construction of public sector housing throughout Yorkshire, Humber, East Midlands, and the North West.
- Brown & Carroll
- Specializes in the design, manufacture, and installation of joinery and fit out products for office, commercial, and residential properties.
- Bryant Homes (1)
- Cordery Build Ltd
- Offers design and build, traditional contracting, shop fitting, and new housing.
- Cosmur Construction
- Offers construction services to the public and private sectors.
- Durkan Group
- Public and private sector building contractors, residential developers, and refurbishment specialists.
- Enigma Property Services
- Offers maintenance of letting and commercial properties.
- F.B.Dell Property Developers Ltd
- General builders and property developers in the south west area of London. Services include painting and decorating, plumbing, roofing, conversions, electrical, and other project work.
- Galliford
- Home and Garden Building Services
- Offers home design and construction, extensions, garden rooms, and landscaping. Also provides residential and commercial modular building kits.
- Hutton Construction Limited
- Construction and building contractors operating throughout East Anglia.
- Interserve Plc (1)
- J Smart & Co.
- Builders of homes, factories, and offices in Edinburgh and central Scotland.
- Jack Smith (Builders) Ltd
- Family-owned and run company with a reputation for excellence.
- Jarvis plc (2)
- John Laing plc (1)
- John Mowlem and Company plc (1)
- John Turner & Sons
- Contractor operating across a spectrum of commercial and industrial sectors in the North West, with specialist joinery and electrical divisions.
- M & K MacLeod Ltd.
- Building work includes public, private, commercial, industrial, and residential
- Milton Building Services
- U.K.-based commercial building contractors specializing in construction, property maintenance, and refurbishment including specialist projects for the Crown estate.
- North Midland Construction
- Civil engineering and construction firm whose contracts includes drainage, substation construction, and cable laying works.
- Osborne
- Provides construction solutions from land development through to long term maintenance for civil and rail engineering, building, maintenance, and housing.
- Robertson Group (Scotland) Ltd.
- Specializes in construction in the retail, healthcare, education, defence, and leisure sectors.
- Stradform Ltd
- Commercial, industrial, retail and residential projects in Southwest England and South Wales
- Sturrocks Joinery
- Sturrocks provides high specification and bespoke joinery products, design, and specification. Based in Forfar near Dundee, they provide carpentry services throughout Angus and the U.K.
- Taylor Woodrow (1)
- Try Group PLC (2)
- Urang Group
- Carries out all aspects of general building, loft conversions, basement conversions and extensions, bathroom and kitchen design and refits, redecoration, and exterior work for individuals throughout Greater London.
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