| Ascb Charitable Fund | Salisbury | 2008 |
| Ascend Athletics Ltd | Chislehurst | 2026 |
| Ascend Coaching South West Limited | Cullompton | 2025 |
| Ascend Events Ltd | Penrith | 2016 |
| Ascend Gym Ltd | Stevenage | 2025 |
| Ascend Mountaineering Ltd | Alfreton | 2023 |
| Ascend Oswestry Ltd | Oswestry | 2025 |
| Ascend Padel MK Limited | Northampton | 2025 |
| Ascend Training Club Limited | Birmingham | 2026 |
| Ascend: Next Level CIC | High Peak | 2024 |
| Ascendance Gymnastics Ltd | Downpatrick | 2017 |
| Ascendance Theatre Arts Ltd. | Penarth | 2011 |
| Ascendancy Fitness Ltd | Manchester | 2016 |
| Ascendancy Sports Management Ltd | London | 2025 |
| Ascendant Leisure Properties Limited | London | 2016 |
| Ascendant MMA Academy Ltd | Frodsham | 2025 |
| Ascendence Tattoo Studio Ltd | Hayes | 2016 |
| Ascending Health & Fitness Limited | Hitchin | 2024 |
| Ascension Combat League Ltd | Bushey | 2025 |
| Ascension Digital Fine Art Ltd | Leeds | 2023 |
| Ascension Eagles Cheerleaders | London | 2001 |
| Ascension Fitness Ltd | Melton Mowbray | 2026 |
| Ascension Media and Marketing Ltd | Doncaster | 2020 |
| Ascension Training Ground Ltd | Watford | 2025 |
| Ascension Training Ltd | Epsom | 2016 |
| Ascent Aviation Ltd | Paisley | 2018 |
| Ascent Climbing Coaching Ltd | Huddersfield | 2025 |
| Ascent Combat Sports Limited | Taunton | 2014 |
| Ascent Trampoline Park Limited | Bristol | 2015 |
| Ascent U.K. Ltd | Bath | 2018 |
| Asch Ltd | Northampton | 2018 |
| Ascnd Ltd | Choppington | 2025 |
| Ascnd Performance Ltd | Ballycastle | 2026 |
| Ascnt Ltd | Leeds | 2026 |
| Ascot Authority (Holdings) Limited | Berkshire | 2001 |
| Ascot Events Limited | Chipping Norton | 1999 |
| Ascot Golf (Holdings) Limited | Chislehurst | 2002 |
| Ascot Golf School of Excellence Limited | Chislehurst | 1997 |
| Ascot Minimates Ltd | Ascot | 2025 |
| Ascot Racecourse Betting & Gaming Limited | Ascot | 2017 |
| Ascot Racecourse Estates (Property Developments) Limited | Berkshire | 2001 |
| Ascot Racecourse Estates Limited | Berkshire | 2001 |
| Ascot Racecourse Limited | Berkshire | 2001 |
| Ascot Royals Limited | London | 2025 |
| Ascot Swim School (Cavan) Limited | Maidenhead | 2016 |
| Ascot Swim School (K&A) Limited | Maidenhead | 2016 |
| Ascot United Football Club Limited | Milton Keynes | 2009 |
| Ascotjesson Ltd | Lichfield | 2026 |
| Ascove Limited | Lichfield | 2006 |
| Ascus Art & Science | Edinburgh | 2013 |
| ASD Next GEN Limited | Liverpool | 2023 |
| ASD10 Sports Ltd | Liverpool | 2023 |
| ASE Academy UK Ltd | Cardiff | 2019 |
| ASE Productions Ltd | Hemel Hempstead | 2019 |
| ASE Sport Group Ltd | Cardiff | 2019 |
| ASE Sports Group Ltd | London | 2024 |
| ASF Chichester Ltd | Arundel | 2025 |
| Asfan Sports Management Limited | Holborn | 2017 |
| Asfitness Studio Ltd | Harlow | 2023 |
| Asgard Cornwall CIC | Bodmin | 2023 |
| Asgard Fitness Ltd | Newmarket | 2016 |
| Asgill House Trust Limited(The) | Richmond Upon Thames | 1983 |
| ASH & AUK Ltd | London | 2024 |
| ASH & Plumb Ltd | Shoreham-By-Sea | 2019 |
| ASH and Rosewood Ltd | Banbury | 2025 |
| ASH and Tanya Ltd | Norwich | 2025 |
| ASH Audio Ltd | Manchester | 2024 |
| ASH Bray Limited | Southampton | 2025 |
| ASH Brook Fields Ltd | Walsall | 2026 |
| ASH Elements Events Limited | Cambridge | 2024 |
| ASH Farm Polo Limited | Ottershaw | 2006 |
| ASH Farm Racing Ltd | Loughgall | 2017 |
| ASH FX Ltd | London | 2023 |
| ASH MAY PT Ltd | Wantage | 2023 |
| ASH Outdoor Limited | Nantwich | 2025 |
| ASH Radford Limited | Hampshire | 2023 |
| ASH Soan Limited | Norwich | 2012 |
| ASH Wall Music Limited | Stafford | 2024 |
| ASH Wallace Consulting Ltd | Ipswich | 2017 |
| Ash&Harper Ltd | Aylesbury | 2020 |
| Ash-Lee Entertainment Ltd | Southend-On-Sea | 2021 |
| Asha Alice Limited | Holborn | 2025 |
| Asha Studio Limited | Rotherham | 2025 |
| Ashanti Divine Rental Hub Limited | Harlow | 2025 |
| Ashar Limited | Hove | 2013 |
| Ashartz Ltd | Carshalton | 2020 |
| Ashash Ltd | Edinburgh | 2021 |
| Ashay Dance CIC | Sheffield | 2023 |
| Ashbank Arts Ltd | Craven Arms | 2024 |
| Ashbourne Arts Limited | Ashbourne | 2002 |
| Ashbourne Football Club Limited | Ashbourne | 2018 |
| Ashbourne Golf Club Limited(The) | Ashbourne | 1980 |
| Ashbourne Rugby Union Football Club Limited | Ashbourne | 2007 |
| Ashbrook Golf Zone Ltd | Whitchurch | 2024 |
| Ashbrook Inista Limited | Middx. | 1990 |
| Ashbrooke Sports Club Limited | Sunderland | 2000 |
| Ashburn Music Limited | Dunfermline | 2024 |
| Ashburnham Golf Company,Limited | Burry Port | 1923 |
| Ashburton Arts Limited | Ashburton | 2017 |
| Ashby Baggers Cornhole Club Community Interest Company | Ashby-De-La-Zouch | 2023 |