| A D Homes London Ltd | London | 2015 |
| A D Hoyle GAS Services Ltd | Batley | 2023 |
| A D I Mechanical Limited | Birmingham | 1991 |
| A D I Solutions (Ltd.) | London | 1998 |
| A D Interior Solutions Limited | Birmingham | 2015 |
| A D J Installations Limited | Leeds | 2008 |
| A D Joinery Limited | Chester Le Street | 2003 |
| A D Jones Roofing Limited | Frome | 2010 |
| A D K Scaffolding Ltd | Dorchester | 2017 |
| A D L Advanced Contractors Ltd | London | 2012 |
| A D Lang & Sons Roofing Specialists Ltd | Woking | 2021 |
| A D Lead Roofing Ltd | London | 2007 |
| A D Leadwork Limited | Waterlooville | 2010 |
| A D M Installation Ireland Ltd | Toomebridge | 2024 |
| A D M Installations Limited | Glasgow | 2007 |
| A D M Joinery NW Limited | Wirral | 2025 |
| A D M Plant Ltd | Ashton-Under-Lyne | 2013 |
| A D Macdonald & SON Limited | Kilmacolm | 2011 |
| A D Maintenance Ltd | Maidstone | 2015 |
| A D Mechanical Limited | Shrewsbury | 2025 |
| A D Millar Plumbing Ltd | Gillingham | 2020 |
| A D Mills Building Contractors Limited | Birmingham | 2013 |
| A D Mills Kitchens & Bathrooms Limited | Peterborough | 2017 |
| A D Mitchell Electrical Ltd | Colchester | 2022 |
| A D Modular Limited | Crewe | 2012 |
| A D N Construction Ltd | Ibstock | 2014 |
| A D Phillips Building Contractor Limited | Nuneaton | 2015 |
| A D Plastering Limited | Bournemouth | 2016 |
| A D Plumbing and Heating Limited | Belper | 2016 |
| A D Power Building Services Ltd | Newport | 2014 |
| A D Properties (Southern) Limited | Hassocks | 2016 |
| A D R Homes Limited | Doncaster | 2002 |
| A D Reid Bricklaying Limited | Kendal | 2019 |
| A D Rendering & Plastering Ltd | Stafford | 2023 |
| A D Renovates Ltd | Norwich | 2024 |
| A D Rolfe Electrical Limited | Leighton Buzzard | 2026 |
| A D Roofing Specialists Ltd | Devon | 2004 |
| A D S Builders AL Ltd | London | 2022 |
| A D S Design and Build Ltd | Leighton Buzzard | 2022 |
| A D S Plumbing & Heating Engineer Limited | Croydon | 2003 |
| A D S Property Enterprises Ltd | St Austell | 2018 |
| A D S Services (UK) Ltd | Wimborne | 2014 |
| A D Scaffolding (Swansea) Ltd | Swansea | 2011 |
| A D Shirley Ltd | Bracknell | 2006 |
| A D Smith Construction Limited | London | 2025 |
| A D Smith Contracting Limited | Wells | 2008 |
| A D Solutions (Rotherham) Ltd | Rotherham | 2026 |
| A D Stark Ltd | Grimsby | 2024 |
| A D Surfacing Ltd | Birmingham | 2011 |
| A D T Decor Limited | Worksop | 2015 |
| A D T Developments Limited | Holsworthy | 2016 |
| A D T Plumbing & Heating Limited | Gloucestershire | 2003 |
| A D Taylor Heating and Plumbing Limited | Preston | 2014 |
| A D Tiling & SON Limited | Leeds | 2020 |
| A D Treserden Limited | Rochester | 2018 |
| A D V Limited | Skegness | 2002 |
| A D Waddington & Sons Ltd | Barnoldswick | 2003 |
| A D Wagstaff Decorators (Derby) Limited | Derby | 2003 |
| A D Williams Building & Civil Engineering Contractors Limited | Callington | 2013 |
| A D Williams Building Contractors Limited | Saltash | 2015 |
| A D Williams Plumbing Ltd | Carshalton | 2024 |
| A D Wragg Plumbing and Heating Limited | Thame | 2007 |
| A D Z Engineering Essex Limited | Dagenham | 2016 |
| A Daly & SON Ltd | Lichfield | 2018 |
| A Daly Ltd | Londonderry | 2003 |
| A Daniel Electrical Limited | Poole | 2023 |
| A Danks Decorating Ltd | Tamworth | 2021 |
| A Dansie Roofing Limited | Horley | 2013 |
| A Darville Plumbing and Heating Ltd | London | 2014 |
| A Daughtry Plumbing & Heating Ltd | Honiton | 2017 |
| A Davenport Joinery Ltd | Congleton | 2020 |
| A Davidson Electrical Limited | Aberdeen | 2006 |
| A Davidson Limited | Penrith | 2002 |
| A Davies Carpentry Limited | Farnham | 2016 |
| A Davies Electrics Limited | Builth Wells | 2020 |
| A Davis Construction Limited | Lingfield | 2014 |
| A Davis Consultancy Ltd | Bristol | 2021 |
| A Davis Electrical Services Ltd | West Malling | 2025 |
| A Davis Electrical Solutions Limited | Feltham | 2015 |
| A Davis Joinery Limited | Preston | 2023 |
| A Davis Plumbing & Heating Ltd | Bude | 2026 |
| A Dawson Decorators Limited | Rochdale | 2022 |
| A Dawson Groundwork Services Limited | Seaham | 2016 |
| A Day Plastering Ltd | Hove | 2018 |
| A DE Simone Ltd | Cambridge | 2012 |
| A Deakin Developments Ltd | Barnsley | 2014 |
| A Deal Property Ltd | Greenford | 2021 |
| A Dean Joinery Ltd | Wigan | 2006 |
| A Decorators Ltd | Worcester | 2024 |
| A Dediu Construction Services Ltd | Chigwell | 2018 |
| A Delis Limited | Grimsby | 2007 |
| A Dennis Contracting Limited | Bishop Auckland | 2021 |
| A Denton Decorators Limited | Leicester | 2015 |
| A Derrick Consultancy Limited | Bristol | 2019 |
| A Design Group Ltd | London | 2024 |
| A Developers Limited | Harrow | 2013 |
| A Dewar Ltd | Colchester | 2010 |
| A Dibden Builders Limited | Southampton | 2012 |
| A Dickerson Builders Ltd | King'S Lynn | 2011 |
| A Dickinson Co Ltd | Chester Le Street | 2024 |