| Asap CRM Consultancy Limited | Sale | 2002 |
| Asap Data Solutions Ltd | London | 2019 |
| Asap IT Consulting Limited | Isleworth | 2018 |
| Asap Records & 500K Management Limited | Northampton | 2024 |
| Asap Systems Limited | Feltham | 2010 |
| Asap-Com Ltd | Slough | 2024 |
| Asap: Analytical Solutions for Agricultural Problems Ltd | London | 2024 |
| Asapp Limited | Bristol | 2016 |
| Asapraj Consulting Ltd | Epsom | 2011 |
| Asaptek Ltd | London | 2020 |
| Asar Consultancy Ltd | Tonbridge | 2023 |
| Asar Solutions Ltd | London | 2024 |
| Asar Tech Solutions Limited | Romford | 2021 |
| Asare Simms Limited | High Wycombe | 2014 |
| Asarebros Ltd | London | 2026 |
| Asari Solutions Ltd | Bolton | 2021 |
| Asarix Technologies Ltd | London | 2026 |
| Asaro Systems Limited | Derby | 2009 |
| Asaru Labs Ltd | London | 2024 |
| Asarum Ltd | London | 2012 |
| Asas Analysis Ltd | Leeds | 2017 |
| Asas Cyber Solutions Ltd | Cockfosters | 2024 |
| Asastech Ltd | London | 2024 |
| Asat Services Limited | Ipswich | 2019 |
| Asato Limited | Ruislip | 2006 |
| Asatuda Ltd. | Waterlooville | 2018 |
| Asava Corporation Ltd | London | 2022 |
| Asaya Enterprises Ltd | London | 2025 |
| Asaz Consulting Ltd | Rainham | 2020 |
| Asaz Ltd | Enfield | 2013 |
| ASB Consultancy Limited | Leeds | 2024 |
| ASB Di̇gi̇tal Technology Ltd | London | 2026 |
| ASB London Ltd | London | 2021 |
| ASB Media Investment Group Limited | Bolton | 2022 |
| ASB Productions Ltd | London | 2021 |
| ASB Showreels Ltd | London | 2024 |
| ASB Tech Consulting Ltd | Romford | 2020 |
| ASB Tech Ltd | Milton Keynes | 2019 |
| Asba Tech Ltd | London | 2024 |
| Asbaab Solutions Ltd | Birmingham | 2026 |
| Asbery Softworks Ltd | Wimborne | 2022 |
| Asbestos Action (Tayside) | Dundee | 2002 |
| Asbestos Connect Ltd | London | 2025 |
| Asbestos Data Systems Ltd | London | 2025 |
| Asbitler Ltd | London | 2026 |
| Asbo Interactive Limited | Rowlands Gill | 2016 |
| Asbo Media Ltd | Twickenham | 2020 |
| Asbreg Ltd | Halesowen | 2021 |
| Asbuilt IQ Limited | London | 2026 |
| Asbuilt IQ UK Limited | London | 2026 |
| Asbyt Ltd | Manchester | 2017 |
| ASC AI Ltd | London | 2026 |
| ASC Consulting Limited | Ringwood | 2004 |
| ASC Digital Healthtech Ltd | Leicester | 2025 |
| ASC Digital Limited | High Wycombe | 2025 |
| ASC Ebridge Limited | Walsall | 2023 |
| ASC Enterprise Limited | Solihull | 1998 |
| ASC Group Limited | Buckingham | 2018 |
| ASC Info Center Limited | Merthyr Tydfil | 2025 |
| ASC IT Solutions Limited | Altrincham | 2010 |
| ASC Media Production Ltd | Renfrew | 2020 |
| ASC Project Solutions Limited | Nottingham | 2025 |
| ASC Software UK Limited | London | 2025 |
| ASC UK Technologies Limited | Ascot | 2004 |
| Asc-Key Limited | Tiverton | 2025 |
| ASC2000 Ltd | Barry | 2023 |
| Asca Intelligence Limited | Northwood | 2025 |
| Ascalia Ltd | London | 2018 |
| Ascalon Digital UK Limited | Wimborne | 2021 |
| Ascar Film Production Ltd | London | 2016 |
| Ascara Healing Ltd | London | 2026 |
| Ascari Limited | Lincoln | 2003 |
| Ascarii Limited | Sedgefield | 2012 |
| Ascarit Solutions UK Ltd | Reading | 2019 |
| Ascencium Digital Services Limited | London | 2015 |
| Ascend Aerial Ltd | Harrow | 2025 |
| Ascend AI Ltd | Bracknell | 2024 |
| Ascend Capital Consultants Limited | London | 2025 |
| Ascend Capital Ltd | London | 2023 |
| Ascend Consulting Partners Ltd | Harrow | 2025 |
| Ascend Creative Limited | Dunstable | 2006 |
| Ascend Digital Ltd | Sheffield | 2022 |
| Ascend Digital Solutions Ltd | Manchester | 2020 |
| Ascend Drone Service Limited | Upminster | 2021 |
| Ascend Edutech Ltd | Ilford | 2026 |
| Ascend ERP Ltd | Nottingham | 2024 |
| Ascend Games Limited | London | 2025 |
| Ascend Global Consultancy Ltd | Gravesend | 2024 |
| Ascend Global Tech Limited | London | 2025 |
| Ascend Golf Ltd | Wolverhampton | 2026 |
| Ascend Holdings Limited | Ashby-De-La-Zouch | 2021 |
| Ascend IQ Ltd | Chatham | 2025 |
| Ascend IT Consult Ltd | Romford | 2025 |
| Ascend IT Services Limited | Wimborne | 2021 |
| Ascend Learning Systems Limited | London | 2019 |
| Ascend Lease Limited | Leatherhead | 2025 |
| Ascend Limitless Ltd | South Shields | 2026 |
| Ascend Logic Ltd | Kington | 2025 |
| Ascend Online Media Limited | Edinburgh | 2005 |
| Ascend Platform Ltd | London | 2025 |