| 3D Concrete Cutting Limited | Bromsgrove | 2012 |
| 3D Concrete Limited | Pulborough | 2013 |
| 3D Constraction Ltd | Bolton | 2022 |
| 3D Construction (Lincolnshire) Ltd | Skegness | 2013 |
| 3D Construction Drylining Ltd | Hayes | 2025 |
| 3D Construction Group Ltd | Heywood | 2019 |
| 3D Construction Partnership Ltd | Middleton | 2015 |
| 3D Construction Services Ltd | Cullompton | 2024 |
| 3D Consulting Limited | Stockport | 2019 |
| 3D Contracts (NI) Ltd | Ballymena | 2017 |
| 3D Decorating Ltd | Redhill | 2019 |
| 3D Decorating Services Ltd | Waterlooville | 2018 |
| 3D Demolition and Construction Ltd | South Ockendon | 2024 |
| 3D Deseng Ltd | Barry | 2008 |
| 3D Design & Build Limited | Tadworth | 2018 |
| 3D Development Ltd | Caerphilly | 2026 |
| 3D Developments (S.E.) Limited | Heathfield | 2021 |
| 3D Drilling Ltd | East Grinstead | 2014 |
| 3D Drylining Limited | London | 2017 |
| 3D Electrical & Security Limited | Stirling | 2018 |
| 3D Electrical Limited | Houghton Le Spring | 2016 |
| 3D Facades Ltd | Colchester | 2022 |
| 3D Fire Defence Systems Ltd | Wellington | 2012 |
| 3D Flooring Limited | Brentwood | 2004 |
| 3D Flooring Restorations Limited | Brentwood | 2012 |
| 3D Force Ltd | Dunstable | 2015 |
| 3D GAS & Plumbing Limited | Newcastle | 2021 |
| 3D Geosurvey Ltd | Southampton | 2020 |
| 3D Groundworks Ltd | Abergelle | 2026 |
| 3D Group NE Limited | Houghton Le Spring | 2026 |
| 3D Group South East Ltd | Bexhill-On-Sea | 2026 |
| 3D Home Solutions Ltd | Southampton | 2024 |
| 3D Homes Limited | Portadown | 2020 |
| 3D Interior Refurbishers Limited | Enfield | 2015 |
| 3D Interior Specialist Ltd | Gloucester | 2009 |
| 3D Investment Properties Limited | Bushey | 2018 |
| 3D Investment Property Limited | Llandudno | 2019 |
| 3D Joinery Ltd | Sheffield | 2015 |
| 3D Land Surveys Ltd | Truro | 2006 |
| 3D Lift Ltd | London | 2019 |
| 3D Luxury Design Ltd | Edgware | 2019 |
| 3D Maintenance Solutions Ltd | Calne | 2008 |
| 3D Mechanical Limited | Houghton-Le-Spring | 2025 |
| 3D Painting & Decorating Ltd | Blackburn | 2024 |
| 3D Plant and Construction Ltd | Nottinghamshire | 2003 |
| 3D Project Design and Application Solutions Ltd | Wood Green | 2021 |
| 3D Projects Limited | Accrington | 2004 |
| 3D Properties (Scotland) Limited | Perth | 2024 |
| 3D Property & Letting Ltd | Bideford | 2018 |
| 3D Property Development (Turriff) Ltd | Turriff | 2010 |
| 3D Property Services (London) Limited | London | 2021 |
| 3D Property Solutions Limited | Enfield | 2011 |
| 3D Refurb Ltd | Feltham | 2017 |
| 3D Render Specialists Ltd | Mid Glamorgan | 2004 |
| 3D Resin Floors Limited | Morden | 2013 |
| 3D Roofing & Maintenance Ltd | Rochdale | 2019 |
| 3D Rooms Ltd | Ripon | 2026 |
| 3D Savjen Limited | London | 2016 |
| 3D Scaffolding Limited | Irlam | 1986 |
| 3D Services Limited | Reading | 2015 |
| 3D Site Services Ltd | London | 2025 |
| 3D Site Solutions Ltd | Ammanford | 2023 |
| 3D Site Surveys Ltd | Harlow | 2014 |
| 3D Solar Limited | Houghton Le Spring | 2025 |
| 3D Specialist Interiors Limited | Petworth | 2016 |
| 3D Steel Services Ltd | Blandford Forum | 2016 |
| 3D Structure UK Ltd | Leicester | 2024 |
| 3D TEK Ltd | Norwich | 2023 |
| 3D Tiling Limited | Bexleyheath | 2025 |
| 3D Walls Limited | Grays | 2024 |
| 3D Windows (HFD) Ltd | Hereford | 2019 |
| 3D Windows Limited | Derby | 2011 |
| 3D Works Ltd | London | 2025 |
| 3D Zero Limited | Whyteleafe | 2024 |
| 3D'S Building Solutions Ltd | London | 2020 |
| 3D.DM Ltd | Leeds | 2020 |
| 3DARCHIVIZION Limited | London | 2010 |
| 3DBC Limited | Bexhill-On-Sea | 2015 |
| 3DE BIM Ltd | Aberdare | 2021 |
| 3DEVELOPMENT Ltd | London | 2023 |
| 3DFA Carpentry & Construction Ltd | Armagh | 2025 |
| 3DGN Ltd | Skelmersdale | 2023 |
| 3DIMENSION Design & Build Ltd | Uxbridge | 2021 |
| 3DMB Limited | Radstock | 2015 |
| 3DMC Construction Ltd | York | 2021 |
| 3DMC Ltd | Ipswich | 2019 |
| 3DOM Construction Ltd | Leighton Buzzard | 2022 |
| 3DP Properties Ltd | Carnforth | 2022 |
| 3DR Ltd | Edinburgh | 2013 |
| 3DSDECOR Ltd | Mitcham | 2020 |
| 3DSOLUTIONFORALL Ltd | Twickenham | 2023 |
| 3DSS Ltd | Blandford Forum | 2023 |
| 3DX Construction Ltd | Pinner | 2022 |
| 3E Construction Ltd. | London | 2018 |
| 3E Devco Limited | Chesterfield | 2024 |
| 3E Energy Ltd | South Croydon | 2023 |
| 3E Energy Project 3 Ltd | Cardiff | 2025 |
| 3E Property Developments Limited | Stalybridge | 2025 |
| 3E Smart Control Ltd | Pwllheli | 2006 |
| 3E'S Commercial Property Project Ltd | Pontypridd | 2025 |