| ADA Rendering Ltd | Hull | 2018 |
| ADA Scaffolding Ltd | Wallington | 2024 |
| ADA Security Ltd | Wigan | 2019 |
| ADA Supervision Limited | Billingham | 2026 |
| ADA Syla Ltd | London | 2025 |
| ADA Ventures Ltd | Manchester | 2013 |
| ADA Windows Limited | London | 2015 |
| Ada&G Limited | Wellingborough | 2020 |
| Adac Energy Limited | Harlow | 2022 |
| Adadonis Ltd | Billingham | 2023 |
| Adae Ltd | Welwyn | 2021 |
| Adaer Vent Ltd | Dagenham | 2019 |
| Adafoord Limited | London | 1973 |
| Adagaz Global Limited | Wolverhampton | 2025 |
| Adageo Ltd | | 2003 |
| Adagio Enterprises Limited | West Wickham | 1995 |
| Adagio Estates Limited | London | 2018 |
| Adagio Holden Ltd | Sheffield | 2014 |
| Adai Maintenance Ltd | Harold Wood | 2023 |
| Adaigi Limited | Cardiff | 2020 |
| Adair & Mcintosh Limited | | 2006 |
| Adair Building Services (Yorkshire) Ltd | Leeds | 2024 |
| Adair Building Services Ltd | Banbridge | 2013 |
| Adair Civil & Structure Limited | Retford | 2017 |
| Adair Development Co Ltd | Hove | 2023 |
| Adaircon Ltd | Lochgilphead | 2024 |
| Adaj Property Limited | Glasgow | 2024 |
| Adal Drylining Ltd | Basildon | 2024 |
| Adal Plumbing & Heating Limited | Doncaster | 2022 |
| Adalan Ltd | Basildon | 2017 |
| Adalec Electrical Contractors Ltd | Southampton | 2013 |
| Adalia Heating & Plumbing Limited | Leigh On Sea | 2016 |
| Adalta Real (CN) Limited | Banbury | 2021 |
| Adalta Real Holdings Limited | Banbury | 2016 |
| Adam & Hayley Contractors Ltd | Canterbury | 2019 |
| Adam & SON Bathrooms Installation Ltd | Manchester | 2019 |
| Adam (Scotland) Limited | Paisley | 2011 |
| Adam 24 Group Ltd | Birmingham | 2024 |
| Adam 360 Property Solutions Ltd | London | 2026 |
| Adam AA Ltd | Ilford | 2024 |
| Adam Abel Builders Limited | London | 2003 |
| Adam AJ Blinds Ltd | Slough | 2021 |
| Adam Ambrose Plumbing & Heating Ltd | Ashford | 2025 |
| Adam and Haider Limited | Wolverhampton | 2017 |
| Adam and Mariam Limited | Dagenham | 2017 |
| Adam and the Amps Ltd | Tamworth | 2019 |
| Adam and Yassen Ltd | Hounslow | 2020 |
| Adam Associates Ltd | Nelson | 2014 |
| Adam B Construction Limited | Birmingham | 2022 |
| Adam B Services Limited | Gillingham | 2011 |
| Adam Baker Carpets Ltd | Burgess Hill | 2015 |
| Adam Barker Builds Ltd | Lymington | 2024 |
| Adam Barrett Carpentry & Joinery Services Limited | Louth | 2013 |
| Adam Bathrooms Limited | Newark | 2008 |
| Adam Bebbington Heating & Plumbing Ltd | Chester | 2022 |
| Adam Beet Contracting Limited | Birmingham | 2015 |
| Adam Bell Building, Renovation & Maintenance Ltd | Morpeth | 2025 |
| Adam Billings Building Services Ltd | Weymouth | 2021 |
| Adam Billings General Builder Limited | Weymouth | 2019 |
| Adam Blackburn Painting & Decorating Ltd | Harlow | 2018 |
| Adam Blenkinsop Rigging Ltd | Middlesbrough | 2015 |
| Adam Brain Building Services Ltd | Leamington Spa | 2019 |
| Adam Brickson Ltd | Chorley | 2024 |
| Adam Brock Plumbing & Heating Ltd | Norwich | 2020 |
| Adam Brothers Ltd | Doncaster | 2023 |
| Adam Build Ltd | London | 2020 |
| Adam Builders Ltd | Beverley | 2016 |
| Adam Building & Civil Engineering Limited | Ilford | 2016 |
| Adam Building & Maintenance Ltd | Borehamwood | 2013 |
| Adam Building Cons Ltd | Romford | 2025 |
| Adam Building Ltd | Romford | 2017 |
| Adam Building Maintenance Ltd | London | 2026 |
| Adam Building Solutions Ltd | Barking | 2021 |
| Adam Builds South West Ltd | Penzance | 2023 |
| Adam C Taylor Ltd | Yeovil | 2011 |
| Adam Carlyle Brickwork Limited | Annan | 2016 |
| Adam Carpenter Ltd | Mitcham | 2026 |
| Adam Carpentry Ltd | London | 2017 |
| Adam Carr Builders Ltd | Carnforth | 2010 |
| Adam Castle Plumbing Ltd | Ruislip, | 2024 |
| Adam Ceramics Limited | High Wycombe | 2004 |
| Adam Chase Global Ltd | London | 2025 |
| Adam Chase Philanthropy Ltd | London | 2025 |
| Adam Civil Engineering Ltd | Wigan | 2012 |
| Adam Clayton Electrical Limited | Cheltenham | 2013 |
| Adam Clements Electrical Services Limited | Worcester | 2015 |
| Adam Collier Consulting Services Limited | London | 2025 |
| Adam Collier Electrical Limited | Eastleigh | 2019 |
| Adam Companies Limited | Southport | 2020 |
| Adam Confue Paving Services Limited | Daventry | 2015 |
| Adam Constructii Limited | London | 2025 |
| Adam Construction Engineering Ltd | Birmingham | 2006 |
| Adam Construction Ltd | Liverpool | 2002 |
| Adam Constructions (Leicester) Ltd | Leicester | 2013 |
| Adam Consulting Engineers Ltd | Prescot | 2017 |
| Adam Contractors Limited | Waltham Abbey | 2013 |
| Adam Cossey Ltd | Norwich | 2023 |
| Adam COX Engineering Ltd | Salisbury | 2015 |
| Adam Daly Electrician Ltd | Manchester | 2022 |
| Adam Daniel Limited | Bexley | 2021 |