| A.M.P. Roof Repairs Ltd | Solihull | 2025 |
| A.M.P.Maintenance Services Limited | Dudley | 2016 |
| A.M.P.S GBR Ltd | Motherwell | 2026 |
| A.M.P.S. Electrical Services Limited | St. Austell | 2003 |
| A.M.R Renovate Limited | Bolton | 2025 |
| A.M.R. Incorporated Limited | Cardiff | 2018 |
| A.M.Roofing Limited | Barnsley | 2015 |
| A.M.S INT Furniture Installations Ltd | Chorley | 2020 |
| A.M.S. (Southeast) Limited | Billericay | 2011 |
| A.M.S. Commercial Developments Limited | Congleton | 1993 |
| A.M.S. Construction (Scotland) Ltd | Tarbert | 2014 |
| A.M.S. GAS Limited | Shipley | 2011 |
| A.M.T Jointing Services Ltd | Hartlepool | 2018 |
| A.M.W.Construction Co.Limited | Wakefield | 1962 |
| A.Mac Electrical & Installations Ltd | Stockton-On-Tees | 2023 |
| A.Macs Electricals Ltd | London | 2019 |
| A.Makarewicz Construction Ltd | Ilminster | 2025 |
| A.Marts Electrical Services Ltd | High Wycombe | 2021 |
| A.Mccarron Services Ltd | Sutton-In-Ashfield | 2024 |
| A.Mcfarlane Construction and Groundwork Ltd | Leyland | 2022 |
| A.Mcnamara & Sons Ltd | Wiltham | 2022 |
| A.Mcqukservices Ltd | London | 2026 |
| A.Metkola Brickwork Ltd | London | 2018 |
| A.Monger Limited | Basingstoke | 1953 |
| A.Montgomery Steelfixer Limited | Hamilton, | 2008 |
| A.Morley Plastering Ltd | Gerrards Cross | 2023 |
| A.Musca Ltd | London | 2015 |
| A.N Delivery Ltd | Chatteris | 2023 |
| A.N Group London Ltd | Blackburn | 2025 |
| A.N. Building Contractors Limited | Trowbridge | 2003 |
| A.N. Checker Limited | Bristol | 2005 |
| A.N. Core Events Limited | Bedford | 2025 |
| A.N. DAR Properties Limited | Peterborough | 2003 |
| A.N. Electrics Limited | Kirkcaldy | 2013 |
| A.N. Fraser Joinery & Building Contractor Limited | Inverness-Shire | 2005 |
| A.N. Master Ltd | St. Helens | 2025 |
| A.N. Powell Electrical & Technical Services Limited | Worcester | 1999 |
| A.N. Russell Limited | Great Chesterford | 1999 |
| A.N.A. Construction Limited | Kent | 2000 |
| A.N.A. Developments Limited | Kent | 2006 |
| A.N.C. Ventilation Limited | Bolton | 2013 |
| A.N.D Civils Ltd | Driffield | 2016 |
| A.N.D Construction Limited | Hull | 2025 |
| A.N.G (London) Limited | Liverpool | 2017 |
| A.N.G Plumbing & Heating Ltd | Bedford | 2020 |
| A.N.G. (Herts) Limited | Hertford | 1997 |
| A.N.I Solutions Ltd | Stirling | 2024 |
| A.N.I. Electrical Yorkshire Ltd. | York | 2011 |
| A.N.J. Builders Limited | Bridgwater | 2021 |
| A.N.K Decorators Ltd | Chesham | 2026 |
| A.N.K. Limited | Edgware | 1999 |
| A.N.P Groundworks & Construction Ltd | Swindon | 2025 |
| A.N.P. Properties Limited | Cullompton | 2003 |
| A.N.R Heating and Plumbing Ltd | Birmingham | 2023 |
| A.N.R Installations Ltd | Leeds | 2018 |
| A.N.R. Developments Limited | Chatham | 1998 |
| A.N.S Construction Limited | Barnsley | 2011 |
| A.N.S Luxury Developments Limited | Barnsley | 2021 |
| A.N.S. Building (UK) Ltd | Manchester | 2022 |
| A.N.S. Homes Limited | Barnsley | 2017 |
| A.N.S. Maintenance Limited | Coventry | 2000 |
| A.N.S.Steels and Construction Ltd | London | 2020 |
| A.N.T. Property Services Limited | Halstead | 2007 |
| A.NEXGEN786 Ltd | Birmingham | 2024 |
| A.O Construction Ltd | Ely | 2018 |
| A.O Renovations Ltd | London | 2022 |
| A.O. Plastering and Rendering Limited | Whitchurch | 2025 |
| A.O. Price & Co. Limited | Scunthorpe | 1957 |
| A.O. Property Development Ltd | Harlow | 2023 |
| A.O.B Building and Internals Limited | Manchester | 2026 |
| A.O.B. Building & Interiors Limited | Ashton-Under-Lyne | 2020 |
| A.O.G Builders Ltd | Bristol | 2025 |
| A.O.L Roofing Services Limited | London | 2024 |
| A.O.Pluckrose Limited | Kent | 1962 |
| A.O.R Building Services Ltd | Liverpool | 2023 |
| A.O.R. Brickwork Ltd | Preston | 2009 |
| A.Ok Electrical Installation & Compliance Services Limited | London | 2018 |
| A.P Build and Development Ltd | Prescot | 2021 |
| A.P Decorators Ltd | Maidstone | 2022 |
| A.P Electrical Services Ltd | Mansfield | 2016 |
| A.P Focus Plumbing and Heating Limited | Loughton | 2016 |
| A.P Patrick Construction Ltd | Peterborough | 2022 |
| A.P Property & Construction Ltd | Gillingham | 2025 |
| A.P Rigging Services Ltd | Sidcup | 2025 |
| A.P Traditional Metal Roofing Limited | Ross-On-Wye | 2026 |
| A.P. and J. Brown Ltd | Carlisle | 1987 |
| A.P. Compton Tiling Limited | Cambridge | 2018 |
| A.P. Consultancy Engineering Limited | Palmers Green | 2012 |
| A.P. Craft Ltd | Woodford Green | 2026 |
| A.P. Davies Contracting Ltd | London | 2025 |
| A.P. Engineering Design Ltd. | Tamworth | 1999 |
| A.P. Faulkner (Heating) Limited | Northampton | 1964 |
| A.P. Freeman Limited | Wisbech | 2010 |
| A.P. Goodwin Limited | Derbyshire | 2003 |
| A.P. Green Builders Limited | Chesham | 1999 |
| A.P. Laflin Builders Limited | Ipswich | 2003 |
| A.P. Maddison-Roberts (NO.1) Developments Limited | London | 2007 |
| A.P. Merrion and Associates Limited | Leicester | 1979 |
| A.P. Mitchell Building Services Limited | Neston | 2005 |
| A.P. Mitchell Developments Ltd | Neston | 2013 |