| Actionline Decorating Ltd | Bridport | 2011 |
| Actionquarter Limited | Manchester | 1997 |
| Actionshake Limited | London | 1996 |
| Actionshield Limited | King'S Lynn | 1995 |
| Actionstate Limited | London | 1997 |
| Actiontek Limited | Bedford | 2018 |
| Actis Insulation Limited | London | 2004 |
| Actismart Ltd | Bilston | 2023 |
| Actium Limited | London | 2025 |
| Activ 142 Ltd | Spalding | 2023 |
| Activ 143 Ltd | Spalding | 2023 |
| Activ Insulation Ltd | Cambridge | 2020 |
| Activ Projects Limited | Telford | 2005 |
| ACTIV8 Services Southern Ltd | Chichester | 2022 |
| Activair Ltd | London | 2009 |
| Activate Construction Ltd | Aberdare | 2015 |
| Activate Power Service Ltd | Birmingham | 2021 |
| Activate Utilities Ltd | Bristol | 2017 |
| Active - Passive Fire Protection Limited | Doncaster | 2024 |
| Active 24/7 Plumbing Ltd | Harpenden | 2026 |
| Active 5 Limited | Northampton | 2013 |
| Active 8 Electrical Solutions Limited | Cannock | 2006 |
| Active Alert Ltd | Leeds | 2023 |
| Active B Ltd | Hatfield | 2026 |
| Active Build Ltd | Elland | 2025 |
| Active Builders London Ltd | Bracknell | 2016 |
| Active Building Solutions (MX) Ltd | London | 2021 |
| Active Building Solutions Ltd | Grays | 2020 |
| Active Cctv and Surveillance Limited | Llanddulas | 2008 |
| Active Claim Services Limited | Hessle | 2001 |
| Active Concept Enterprise Ltd | Newcastle Under Lyme | 2017 |
| Active Connect Ltd | Surrey | 2002 |
| Active Construction Projects Ltd | Pontyclun | 2019 |
| Active Construction Solutions Limited | Hertford | 2009 |
| Active Contracting Services Limited | Romford | 2013 |
| Active Contractors & Plant Hire Limited | Birmingham | 2017 |
| Active Contruction Ltd | Birmingham | 2024 |
| Active Cool Ltd | Milton Keynes | 2025 |
| Active Cooling UK Ltd | Sidcup | 2025 |
| Active CUT Ltd | Northampton | 2024 |
| Active Design and Build Ltd. | Brixton | 2010 |
| Active Design Associates Limited | Steeple Morden | 2001 |
| Active Design Projects Limited | Port Glasgow | 2012 |
| Active Development Solutions Limited | Milton Keynes | 2007 |
| Active Driveways Ltd | Congleton | 2025 |
| Active Electrical Contractors Ltd | London | 2020 |
| Active Electrical Install Limited | Nottingham | 2020 |
| Active Electrical Installations Ltd | Hertfordshire | 2004 |
| Active Electrical Services (N.E.) Limited | Durham | 2010 |
| Active Electrical Services (West Midlands) Ltd | Rugeley | 2015 |
| Active Electrical Services Limited | Maidenhead | 2002 |
| Active Electrical Solutions Limited | Essex | 2005 |
| Active Energy UK Limited | Broadstone | 2007 |
| Active Engineering Services Ltd | Peterborough | 2019 |
| Active Environmental Limited | Luton | 2017 |
| Active Flooring Solutions Limited | Liverpool | 2011 |
| Active GAS & Heating Services Ltd | Braintree | 2017 |
| Active GAS Maintenance Ltd | London | 2020 |
| Active Glass and Mirrors Ltd | Wolverhampton | 2019 |
| Active Glaze Ltd | Ashton-Under-Lyne | 2022 |
| Active Green Technology Ltd | Colchester | 2019 |
| Active Group Projects Ltd | Lingfield | 2022 |
| Active Group Scaffolding Ltd | Lingfield | 2021 |
| Active Heating & Cooling Services Limited | Newbury | 2024 |
| Active Heating & Renewables Ltd | Hemel Hempstead | 2009 |
| Active Home Solutions Ltd | Leatherhead | 2020 |
| Active Homes Ltd | Slough | 2026 |
| Active Hospitality Management Limited | London | 2019 |
| Active House Solutions Limited | Reading | 2020 |
| Active Hvac Ltd | Chorley | 2008 |
| Active Installs Ltd | Stockport | 2019 |
| Active Interior Solutions Ltd | Stamford | 2017 |
| Active JTR Ltd | West Bromwich | 2025 |
| Active Land and Build Limited | London | 2016 |
| Active Legacy Ltd | Bristol | 2022 |
| Active Lifting Services Limited | Newry | 2024 |
| Active Link Electrical Services Ltd | London | 2026 |
| Active Liverpool C.I.C. | Liverpool | 2020 |
| Active Maintain Limited | Preston | 2024 |
| Active Maintenance Solutions Limited | Dungannon | 1999 |
| Active Management Property Solutions Ltd | Weybridge | 2016 |
| Active Mastics Limited | Wickford | 2007 |
| Active Mavrick Holdings Limited | West Molesey | 2024 |
| Active Outdoor Media Limited | Telford | 2007 |
| Active Painting Contractor Ltd | London | 2024 |
| Active Plant Hire Limited | Ashford | 2005 |
| Active Play Installations Ltd | Bedford | 2023 |
| Active Plumbing & Heating Berkshire Ltd | Wokingham | 2014 |
| Active Plumbing & Heating Services Wolverhampton Ltd | Wolverhampton | 2018 |
| Active Plumbing and Heating Services Ltd | Sawbridgeworth | 2016 |
| Active Plumbing Services Ltd | Thatcham | 2006 |
| Active Plumbing Solutions Limited | Gateshead | 2016 |
| Active Property Services Ltd | London | 2022 |
| Active Rail Solutions Ltd | Waterlooville | 2024 |
| Active Renovations Limited | Rugby | 2025 |
| Active Resin Flooring Ltd | Hove | 2019 |
| Active Resin Flooring Solutions Ltd | London | 2022 |
| Active Response 247 Ltd | Wembley | 2025 |
| Active Response UK Limited | Greenford | 2005 |
| Active RMS Ltd | Milton Keynes | 2021 |