| Acropolis Property Solutions Ltd | Bury St. Edmunds | 2026 |
| Acropolis Vent Mechanical Ltd | Hornchurch | 2023 |
| Across Solutions Ltd | Rotherham | 2022 |
| Acroterion Developments Limited | London | 2019 |
| Acrow Construction Ltd | Northolt | 2021 |
| Acrow Global Limited | Lydney | 2019 |
| Acrow Property Ltd | London | 2017 |
| Acrs Limited | Evesham | 2002 |
| Acrylicon UK Limited | Wyboston | 2010 |
| Acrylik Kitchens Ltd | Oldbury | 2017 |
| ACS & SON Electrical Services Ltd | Milton Keynes | 2018 |
| ACS & Sons General Builders Ltd | Devizes | 2017 |
| ACS (Gulval) Limited | Hayle | 2021 |
| ACS - Abbey Contract Services Limited | Armagh | 2024 |
| ACS Abseiling Ltd | West Drayton | 2021 |
| ACS Air Conditioning Ltd | Wrexham | 2004 |
| ACS Aircon Limited | Haywards Heath | 2004 |
| ACS Aircon Services (South East) Limited | Haywards Heath | 2013 |
| ACS ALL Civils Solutions Ltd | Rochester | 2023 |
| ACS Alltrades Ltd | Shotts | 2025 |
| ACS Ammanclad Ltd | Swansea | 2024 |
| ACS Asbestos Removal Services Ltd | Elland | 2012 |
| ACS Builders Ltd | Harrow | 2022 |
| ACS Building & Constructions Ltd | Borehamwood | 2021 |
| ACS Building Contractors Limited | Bideford | 2016 |
| ACS Building Ltd | London | 2023 |
| ACS Building Services Ltd | Hove | 2008 |
| ACS Building Solutions Limited | Deal | 2025 |
| ACS Cabins & Site Services Limited | Derbyshire | 2006 |
| ACS Cambridge Limited | Billericay | 2023 |
| ACS Civils Ltd | Omagh | 2015 |
| ACS Construction & Services Ltd | Harrow | 2019 |
| ACS Construction Group Ltd. | Stockport | 1997 |
| ACS Construction Limited | London | 2019 |
| ACS Construction Midlands Limited | Birmingham | 2007 |
| ACS Contracting Ltd | South Croydon | 2019 |
| ACS Contractors Limited | Derby | 2018 |
| ACS Contracts Ltd | Darwen | 2026 |
| ACS Controlled Demolition Ltd | Eastbourne | 2011 |
| ACS Electrical (Shoreham) Limited | West Sussex | 2002 |
| ACS Electrical (UK) Ltd | Thatcham | 2002 |
| ACS Electrical London Ltd | London | 2014 |
| ACS Electrical Services Ltd | Epsom | 2017 |
| ACS Electrical SW Ltd | Plymouth | 2020 |
| ACS Electrician Ltd | Nelson | 2022 |
| ACS Electrics Limited | Warrington | 2007 |
| ACS Environmental Limited | Loughborough | 2008 |
| ACS Essex Ltd | Billericay | 2023 |
| ACS Estates Limited | Sheffield | 2010 |
| ACS Exteriors Ltd | Sevenoaks | 2011 |
| ACS Fabrication & Cladding Ltd | Tain | 2025 |
| ACS Fire Alarms Ltd | London | 2018 |
| ACS Fire Limited | Portsmouth | 2007 |
| ACS Flooring Ltd | Newcastle Upon Tyne | 2025 |
| ACS Health,Safety & Environment Limited | Elland | 2008 |
| ACS Heating and Plumbing Ltd | Chorley | 2011 |
| ACS Home Improvements Ltd | Bexhill-On-Sea | 2020 |
| ACS Industrial Cladding Limited | Port Talbot | 2016 |
| ACS Interiors & Joinery Ltd | Grimsby | 2018 |
| ACS Interiors Ltd | Milton Keynes | 2024 |
| ACS Lining Limited | Stalybridge | 1994 |
| ACS Liverpool Ltd | Bootle | 2024 |
| ACS MAX Ltd | Dartford | 2017 |
| ACS Multi Utility Limited | Manchester | 2008 |
| ACS Networks Limited | Ferndown | 2009 |
| ACS Partition Solutions Limited | Redditch | 2012 |
| ACS Plastering Limited | Peterlee | 2012 |
| ACS Plumbing & Heating Limited | Willenhall | 2008 |
| ACS Plumbing and Heating (Devizes) Ltd | Devizes | 2018 |
| ACS Prime Energy Group Ltd | Milton Keynes | 2023 |
| ACS Proactive Ltd | Basildon | 2021 |
| ACS Professionals in Construction Limited | Wembley | 1986 |
| ACS Project Management Ltd | Newry | 2023 |
| ACS Property Solutions Limited | Colchester | 2023 |
| ACS Renovations Limited | Looe | 2024 |
| ACS Roofing & Property Maintenance Limited | Norwich | 2024 |
| ACS Roofing Services Ltd | Heckmondwike | 2020 |
| ACS Scaffolding Limited | Chatham | 2018 |
| ACS Scotland Ltd | Glasgow | 2021 |
| ACS Select Group Ltd | Kilmarnock | 2019 |
| ACS Services Ltd | Northampton | 2026 |
| ACS Solar Ltd | Norwich | 2023 |
| ACS SW Ltd | London | 2018 |
| ACS Technical Services Limited | Sutton Coldfield | 2018 |
| ACS Wales Limited | Ammanford | 2000 |
| ACS Xtra Space Ltd | Harlow | 2021 |
| Acsa Developments Ltd | Gloucester | 2017 |
| Acsad Ltd | Barking, Essex | 2020 |
| Acsap Limited | Nuneaton | 2011 |
| Acse Steel Ltd | Dagenham | 2026 |
| Acsg Electrical Ltd | Paisley | 2024 |
| Acsm Building Solutions Ltd | Whitstable | 2024 |
| Acsons Ltd | Ipswich | 2023 |
| Acsupport Ltd | London | 2025 |
| ACT & Construct Ltd | Rickmansworth | 2023 |
| ACT ADR Limited | Lewes | 2020 |
| ACT Air-Conditioning Ltd | Tamworth | 2025 |
| ACT Brett Installations Ltd | Manchester | 2007 |
| ACT Builders Ltd | Wolverhampton | 2025 |
| ACT Construction (Europe) Ltd | Glasgow | 2015 |