| Axel Tuanzebe Limited | Cobham | 2015 |
| Axelrod Yachting Ltd | London | 2022 |
| Axes and Arrows Ltd | Ipswich | 2021 |
| Axes to Ashes Ltd | Bury | 2022 |
| AXG Limited | Barry | 2021 |
| Axholme Fisheries Limited | Doncaster | 2017 |
| Axial Art Services Ltd | London | 2026 |
| Axiom Apparel Ltd | London | 2018 |
| Axiom Art Limited | Glasgow | 2017 |
| Axiom Creative Entertainment Ltd | London | 2016 |
| Axiom Events Limited | Middlesbrough | 2017 |
| Axiom Impulse Ltd | London | 2026 |
| Axiom Music Ltd | Ipswich | 2008 |
| Axiom PL Ltd | London | 2026 |
| Axiom Productions Ltd | Birmingham | 2014 |
| Axiom PT Ltd | London | 2023 |
| Axion NOW Events Ltd | Amersham | 2025 |
| Axios Customs Limited | London | 2025 |
| Axis Adventures Ltd | Newport | 2026 |
| Axis Artist Management Limited | London | 2008 |
| Axis Event Solutions Ltd | Huntingdon | 2022 |
| Axis Football Investments Ltd | Swindon | 2017 |
| Axis Freedom Limited | Bristol | 2016 |
| Axis Gyms Ltd | Bury St. Edmunds | 2012 |
| Axis Health Club Ltd | Penrith | 2026 |
| Axis Mundi Films Ltd | London | 2025 |
| Axis RDY Ltd | Poole | 2024 |
| Axis Sports Group Ltd | London | 2025 |
| Axis Therapy Ltd | Caernarfon | 2010 |
| Axis Trampoline Club Limited | Bristol | 2014 |
| Axisfx Ltd | Eh54 9Eq | 2018 |
| Axiski Ltd | Worcester | 2010 |
| Axize Games Ltd | Cardiff | 2019 |
| AXL INK Ltd | Warrington | 2025 |
| AXL Sports Management Limited | Hassocks | 2023 |
| Axle Events Ltd | Brighton | 2023 |
| Axminster Carnival Limited | Ottery St. Mary | 2021 |
| Axminster Gymnastics Club Limited | Axminster | 2017 |
| Axminster Heritage Limited | Axminster | 2005 |
| AXN Sports Ltd | Cardiff | 2024 |
| Axolotl Futures Ltd | Reading | 2025 |
| Axom Limited | Devizes | 1997 |
| Axon Entertainments Limited | Lytham St Annes | 2022 |
| Axon Services Ltd | Wickford | 2026 |
| Axon Studios Ltd | Sutton-In-Ashfield | 2025 |
| AXT Haus Ltd | Chester | 2024 |
| Axtell Music Ltd | Purfleet | 2016 |
| Axten Sport Academy Ltd | Aberdeen | 2016 |
| Axwell Music Ltd | Holborn | 2011 |
| AY Fitness Limited | Falkirk | 2025 |
| AYA Anne Music Limited | London | 2025 |
| AYA Art Limited | London | 2019 |
| AYA Dance Ltd | March | 2023 |
| Ayaana Fitness Ltd | London | 2023 |
| Ayatfutbolfc Ltd | Croydon | 2025 |
| Ayaya Limited | Hurstierpoint | 1999 |
| AYB Studios Ltd | Leigh-On-Sea | 2025 |
| AYC Studios Ltd | Cardiff | 2019 |
| Aycaramba Limited | Liverpool | 2022 |
| Aycliffe Dance Academy Limited | Newton Aycliffe | 2011 |
| Ayclive C.I.C. | Newton Aycliffe | 2024 |
| Ayclive Events Limited | Newton Aycliffe | 2023 |
| AYD Elite Academy Ltd | Huddersfield | 2021 |
| Aydecki Ltd | Pontefract | 2026 |
| Ayden Millar Art Department Ltd | Johnstone | 2013 |
| Aydintrains Ltd | London | 2023 |
| AYE Create Limited | Dalkeith | 2024 |
| Ayedear Productions Ltd | London | 2011 |
| Ayhan Fitness Limited | London | 2019 |
| AYI Animations Limited | Bridgend | 2016 |
| Ayir Studios Limited | London | 2016 |
| Ayko Creations Limited | Hoddesdon | 2021 |
| Ayla Suveren Creative Consulting Ltd | Preston | 2013 |
| Aylesbury Adventure Golf Ltd. | Aylesbury | 2019 |
| Aylesbury Canal Society Limited | Aylesbury | 2009 |
| Aylesbury Cheerleading Academy | Crawley | 2018 |
| Aylesbury Crescent F.C and Youth Academy Ltd | Plymouth | 2023 |
| Aylesbury Football Academy Ltd | Aylesbury | 2023 |
| Aylesbury Golf Centre Limited | Aylesbury | 1990 |
| Aylesbury Gymnastics Academy (AGA) | Aylesbury | 2008 |
| Aylesbury Leisure Ltd | Manchester | 2026 |
| Aylesbury Martial Arts School Limited | Gerrards Cross | 2014 |
| Aylesbury Opera Productions Limited | Princes Risborough | 2024 |
| Aylesbury Park Golf Club Limited | Leeds | 1999 |
| Aylesbury RFC Trading Company Limited | Aston Clinton | 2016 |
| Aylesbury Rugby Football Club Limited | Aylesbury | 2010 |
| Aylesbury Strength and Conditioning Ltd. | Aylesbury | 2015 |
| Aylesbury United FC Limited | Aylesbury | 2006 |
| Aylesbury Vale Community Trust | Buckingham | 2009 |
| Aylesbury Vale Golf Club Limited | Aylesbury | 2005 |
| Aylesbury Waterside Theatre Limited | Woking | 2000 |
| Aylesburyescaperooms Ltd | Ware | 2018 |
| Aylesford Bulls Rugby Football Club Limited | Aylesford | 2012 |
| Aylesham Heritage Community Interest Company | Canterbury | 2016 |
| Aylestone Athletic Rugby Football Club Limited | Leicester | 2015 |
| Aylestone ST James (Management) Rugby Football Club Limited | Leicester | 2010 |
| Aylestone ST James Rugby Football Club Limited | Leicester | 2010 |
| Aylmer Creative Group Ltd | Stroud | 2023 |
| Aylmerton Field Study Centre Ltd | Norwich | 2018 |
| Aylmerton Outdoor Education Centre Ltd | Norwich | 2018 |