| Accidental Illustration Limited | London | 2018 |
| Accidental Limited | Canterbury | 2000 |
| Accidental Theatre Ltd | Belfast | 2012 |
| Accidentally on Purpose TOO Ltd | London | 2024 |
| Accidentally Told YOU Ltd | Cromarty | 2020 |
| Accl Leisure Limited | Middlesbrough | 2025 |
| Acclimbatize Limited | Matlock | 2007 |
| Accomplice Limited | Hastings | 2004 |
| Accomplish Fitness Limited | Newbury | 2014 |
| Accountability PT Limited | Ilford | 2026 |
| Accounts Admin Limited | London | 2015 |
| Accrington & District Golf Club Limited | Accrington | 1933 |
| Accrington & District Golf Club Services Ltd | Accrington | 2016 |
| Accrington Anglers (Holdings) Limited | Rossendale | 1964 |
| Accrington Football and Sports Club CIC | Bacup | 2020 |
| Accrington Heritage Trust | Burnley | 2014 |
| Accrington Lions Community Boxing Club C.I.C. | Accrington | 2019 |
| Accrington Stanley Football Club Limited | Lancashire | 1976 |
| Accrington Stanley Football in the Community Trust Limited | Accrington | 2010 |
| Accrington Stanley Women Football Club Ltd | Accrington | 2021 |
| Accumulator App Ltd | Worcester | 2022 |
| ACD Leisure Ltd | Bury St Edmunds | 2016 |
| Acdb Events Limited | Ipswich | 2016 |
| Ace & Jack’S Poker League Ltd | Watford | 2022 |
| Ace Academy of Dance Ltd | South Shields | 2025 |
| Ace Active Consultants Ltd | Luton | 2021 |
| Ace Adventure Limited | Forres | 2006 |
| Ace Allstars Ltd | Bury St. Edmunds | 2024 |
| Ace and Rose Ltd | Maldon | 2023 |
| Ace and Spin Ltd | Luton | 2025 |
| Ace Audio Ltd | Glasgow | 2022 |
| Ace Balloons Limited | Rotherham | 2025 |
| Ace Battle Verse Ltd | London | 2023 |
| Ace Celebrations Ltd | Kidderminster | 2023 |
| Ace Circus Productions Limited | Gateshead | 2011 |
| Ace Clvrk Entertainment Ltd | Reading | 2025 |
| Ace Community Events CIC | Dundee | 2024 |
| Ace Competition Ltd | Newry | 2019 |
| Ace Conditioning Community CIC | Manchester | 2026 |
| Ace Conditioning Ltd | Bolton | 2020 |
| Ace Crazy Golf Hire Limited | Rotherham | 2023 |
| Ace Crew Limited | Worcester Park | 2007 |
| Ace Cross Country Ltd | Gloucester | 2016 |
| Ace Discos Limited | Woodford Green | 2003 |
| Ace Drop Entertainment Limited | Wirral | 2025 |
| Ace Electra (Peterborough) Limited | Peterborough | 2013 |
| Ace Elite Coaching Ltd | Newcastle | 2026 |
| Ace Entertainment Limited | Sheffield | 1999 |
| Ace Events and Hospitality Limited | Waltham Abbey | 2014 |
| Ace Events Limited | Boston | 2001 |
| Ace Fashion Design Ltd | London | 2024 |
| Ace Fitness Ltd | Newcastle | 2022 |
| Ace Gain Limited | Huntingdon | 2019 |
| Ace Golf Challenge Ltd | Swadlincote | 2019 |
| Ace Golf Club Hire Ltd | Cardiff | 2015 |
| Ace Golf Events Limited | Woking | 2025 |
| Ace Guitar Academy Ltd | Abingdon | 2014 |
| Ace Gymnastics Perth Limited | Perth | 2026 |
| Ace Interior Solutions Ltd | Windsor | 2012 |
| Ace Karting Limited | Nuneaton | 2006 |
| Ace Lifestyle Limited | London | 2016 |
| Ace Martial Arts Limited | Windsor | 2022 |
| Ace MMA Ltd | South Shields | 2023 |
| Ace Motorsport Concepts Limited | Bristol | 1998 |
| Ace Music Booking Agency Limited | Kington | 2019 |
| Ace of Base Clubs Ltd | Erith | 2023 |
| Ace of Base Tennis Ltd | Erith | 2023 |
| Ace of Diamonds Events Limited | Basildon | 2023 |
| Ace of Sports Ltd | Mold | 2016 |
| Ace Padel 1 Limited | Stafford | 2025 |
| Ace Padel 2 Limited | Stafford | 2025 |
| Ace Padel Club Ltd | Telford | 2024 |
| Ace Padel Limited | Stafford | 2024 |
| Ace Party Limited | Rotherham | 2021 |
| Ace Performance Coaching Ltd | London | 2018 |
| Ace Performance Training Ltd | Thatcham | 2023 |
| Ace Personal Training Limited | Birmingham | 2021 |
| Ace Pickleball Academy Ltd | Pinner | 2025 |
| Ace Pilates Ltd | London | 2022 |
| Ace Playce 2 B Ltd | Jarrow | 2012 |
| Ace Productions Event Management Limited | London | 2015 |
| Ace Races Ltd | Sheffield | 2020 |
| Ace Shot Golf Ltd | Weymouth | 2025 |
| Ace Sport Racing Ltd | Beverley | 2022 |
| Ace Sports Coaching Ltd | Holmfirth | 2017 |
| Ace Studio 23 Ltd | London | 2023 |
| Ace Tattzz Ltd | London | 2024 |
| Ace Tennis Camps Limited | Derby | 2009 |
| Ace Tennis Limited | Newquay | 2007 |
| Ace Tennis Promotions Ltd | London | 2019 |
| Ace to College Ltd | Cardiff | 2025 |
| Ace Transform Limited | London | 2021 |
| Ace Tribe Ltd | Glasgow | 2021 |
| Ace Wellness Ltd | London | 2024 |
| Ace! LIZ Thomas Limited | Blackburn | 2014 |
| Ace's Machines Ltd | Bedford | 2026 |
| Acearts Limited | Somerton | 2015 |
| Aceer Flow Digital Ltd | London | 2026 |
| Aceinks Limited | London | 2024 |
| Acenta UK Ltd | London | 2025 |