| 4.1 Trading Ltd | Llandudno | 2025 |
| 4.A Investments Ltd | Sittingbourne | 2019 |
| 4.T.W.C. Limited | Leigh On Sea | 2015 |
| 40 ACRES2 Limited | North Berwick | 2023 |
| 40 Beech Hill Developments Limited | London | 2017 |
| 40 Conduit Street Limited | London | 2025 |
| 40 Lewin Road Limited | Rickmansworth | 2017 |
| 40 Renshaw Ltd | Liverpool | 2021 |
| 40 Watt Electrical Limited | Glastonbury | 2022 |
| 40-46 Surbiton Road Limited | London | 2019 |
| 40A 40B Wareham RD Ltd | Ringwood | 2021 |
| 41 Cross Road Ltd | Burley | 2025 |
| 41 Degrees Ltd | Milton Keynes | 2017 |
| 41 High Street Ltd | Scarborough | 2019 |
| 411 Consultancy and Surveying Ltd | London | 2021 |
| 413BUILD Ltd | Dagenham | 2025 |
| 414 Solutions Limited | Bolton | 2019 |
| 418 Developments Limited | St. Ives | 2016 |
| 41BRIX Ltd | Norwich | 2025 |
| 41GH Limited | London | 2020 |
| 42 Carpentry Ltd | Dagenham | 2022 |
| 42 Construction Ltd | Poole | 2011 |
| 42 Developments Limited | London | 2019 |
| 42 Electrical Ltd | Thornton-Cleveleys | 2026 |
| 42 Holdings Limited | Rowlands Gill | 2018 |
| 42 Kingsway Residential Limited | Esher | 2010 |
| 42 Maintenance Limited | Uxbridge | 2024 |
| 42 Phoenix Road Limited | London | 2025 |
| 42 Poole Hill Limited | Bournemouth | 2024 |
| 42-44 Camp Road Management Limited | Farnborough | 2017 |
| 42-46 WG Limited | London | 2018 |
| 421 Group Limited | Doncaster | 2021 |
| 428 Associates Ltd | London | 2018 |
| 42930 Ltd | Uxbridge | 2017 |
| 42MO Ltd | Rochdale | 2023 |
| 42PA Ltd | Sunderland | 2025 |
| 43 Humberston Avenue Limited | Grimsby | 2022 |
| 43CARPENTRY Limited | Guildford | 2025 |
| 43RED Ltd | Manchester | 2024 |
| 44 - 50 Station Road Ltd | Sandwich | 2015 |
| 44 Construction 1 Limited | Ipswich | 2019 |
| 44 Developments Limited | Horley | 2015 |
| 44 Interiors West Ltd | Glasgow | 2023 |
| 44 King Street (Management) Limited | King'S Lynn | 2007 |
| 44 Property Developments Limited | Peterborough | 2017 |
| 44 RAW Developments Ltd | Bristol | 2025 |
| 44 Renshaw Ltd | Liverpool | 2020 |
| 44 Scaffolding Limited | North Leigh Business Park | 2022 |
| 44 Square Ltd | Gravesend | 2021 |
| 44 Trafalgar Road Ltd | Emsworth | 2013 |
| 44 Water Street Limited | Birmingham | 2026 |
| 44,46,48,50 Sheethanger Lane Management Company Limited | Salisbury | 2011 |
| 442 Property Solutions Limited | Sheffield | 2016 |
| 444 Constructions Ltd | Sutton | 2015 |
| 444 Flooring Solutions Limited | Fawkham | 2026 |
| 445 Woolwich Road Limited | London | 2016 |
| 4452 Property Limited | Halstead | 2010 |
| 45 Degree Construction & Development Ltd | Brighton | 2021 |
| 45 Degree Joinery Ltd | Keighley | 2025 |
| 45 Degrees Construction Ltd | London | 2015 |
| 45 Degrees South Ltd | Barnet | 2012 |
| 45 Derbyshire Street Ltd | London | 2014 |
| 45 Joinery Limited | Inverurie | 2016 |
| 45 Priory Road Limited | London | 2019 |
| 45 Rainsford Lane Ltd | Chelmsford | 2025 |
| 45 Redan Street Limited | London | 2025 |
| 45 Station Road (Liss) Ltd | Godalming | 2023 |
| 45 West (Bayswater) Limited | | 1988 |
| 45 West (Kensington) Limited | | 1989 |
| 456 Developments Limited | Manchester | 2023 |
| 456 Realty Limited | Manchester | 2023 |
| 456FIX Limited | Bedford | 2019 |
| 458 Developments Limited | Bristol | 2023 |
| 459 Rayners Lane Ltd | Harrow | 2024 |
| 46 (Contracts) Limited | Leeds | 2009 |
| 46 - 48 Grange Walk Limited | London | 2014 |
| 46 Fairfield South Limited | London | 2012 |
| 46 Golborne Road Limited | London | 2019 |
| 46 Seafront Ltd | Dorking | 2003 |
| 46 Thermal Contracts Ltd | Wigston | 2025 |
| 46 Works Ltd | Portsmouth | 2026 |
| 460 Leisure Limited | Brentwood | 2007 |
| 460 Ltd | Poole | 2017 |
| 464 Limited | Cheltenham | 2018 |
| 465CONSTRUCTION Ltd | Hayes | 2025 |
| 466 Omega Ltd | London | 2025 |
| 467 Garratt Limited | Warwick | 2025 |
| 47 Canterbury Road Limited | Gerrards Cross | 2010 |
| 47 Fibre Ltd | Glasgow | 2026 |
| 47 HSC Ltd | Coventry | 2020 |
| 47 Knight Street Limited | Liverpool | 2018 |
| 47 Paddenswick Road Limited | Acton | 2024 |
| 47 Pier Road Development Ltd | Burgess Hill | 2025 |
| 47 RW Limited | London | 2023 |
| 47 RW Subco Limited | London | 2025 |
| 47 ST Giles Street Ltd | Norwich | 2025 |
| 47 Station Road (Liss) Ltd | Godalming | 2023 |
| 47 Upperton Limited | Hailsham | 2025 |
| 47 Wilton Limited | Knutsford | 2023 |
| 47-48 Havelock Road Limited | East Sussex | 2005 |