| Artworld United Limited | Hertfordshire | 2004 |
| Arty Beanz Community Interest Company | Cleethorpes | 2024 |
| Arty Events Limited | Warrington | 2025 |
| Arty Farley Limited | London | 2026 |
| Arty Farty Limited | Birmingham | 2025 |
| Arty Heaven Limited | Bude | 2016 |
| Arty Kitty Cat Limited | London | 2019 |
| Arty Party Crafts Ltd | Ardrossan | 2017 |
| Arty Party Limited | Shrewsbury | 2010 |
| Arty Productions Limited | Glasgow | 2015 |
| Arty Spark Ltd | Ruislip, | 2025 |
| Arty-Parti Ltd | Aberaeron | 2020 |
| ARTY2 Ltd | Chichester | 2009 |
| Artybubbas Ltd | Letchworth Garden City | 2023 |
| Artybuncles Limited | Glasgow | 2011 |
| Artycats Ltd | Birmingham | 2026 |
| Artyface Community Art Limited | London | 2025 |
| Artyfakes Action Props Ltd. | Thetford | 2010 |
| Artylicious Ltd | Baildon | 2006 |
| Artyman Ltd | London | 2026 |
| Artyourart Limited | Bath | 2022 |
| Artypotz Ceramics Limited | Southsea | 2013 |
| Artyulia Illustrations Ltd | St Albans | 2010 |
| Artz Fine Art Ltd. | London | 2022 |
| Artz for ALL C.I.C. | Southport | 2014 |
| Artz N Beyond Limited | Waltham Abbey | 2016 |
| Arun Arts Company Limited | Bognor Regis | 1996 |
| Arun District Indoor Bowling Club Limited | West Sussex | 1983 |
| Arun Sports Arena Ltd | Yapton | 2016 |
| Arun Yacht Club Limited(The) | Littlehampton West Sussex | 1981 |
| Aruna Arts Limited | Haslemere | 2009 |
| Arundel 7 Abseilers Limited | Moon Lane | 2019 |
| Arundel and Downland Community Leisure Trust | Arundel | 2001 |
| Arundel Castle Cricket Foundation | Arundel | 2012 |
| Arundel Castle Trustees Limited | Arundel | 1976 |
| Arundel Community Trust Services Limited | Arundel | 2004 |
| Arundel Events Ltd | Arundel | 2024 |
| Arundel Festival Ltd | Chichester | 2024 |
| Arundel Festivals and Events Limited | Chichester | 2010 |
| Arundel Lane Studios Ltd | Rotherham | 2026 |
| Arundel Museum (Trading) Limited | Arundel | 2011 |
| Arundel Players | Arundel | 2020 |
| Arundell Promotions Ltd | Newport | 2022 |
| Arunima Kumar Dance Company C.I.C. | London | 2015 |
| Arusha Gallery Ltd | Edinburgh | 2014 |
| ARV Club Limited | Bristol | 2022 |
| ARV Studios Ltd | Sunderland | 2023 |
| Arvatz Academy Ltd | Borehamwood | 2023 |
| Arvielle Ltd | London | 2026 |
| Arvil Patrick Stewart Limited | | 2004 |
| Arvind Sharma Ltd | Four Oaks | 2025 |
| Arvolve Limited | London | 2023 |
| ARW Fitness Ltd | Glasgow | 2025 |
| Arxp Ltd | London | 2022 |
| ARY Digital UK Limited | London | 1999 |
| AS & a Limited | Liverpool | 2002 |
| AS & JS Entertainment Ltd | Malvern | 2024 |
| AS a Matter of ACT Ltd | Gateshead | 2019 |
| AS Assets Ltd | Manchester | 2023 |
| AS Big AS This Limited | London | 2008 |
| AS Event Mgmt Ltd | Basingstoke | 2025 |
| AS Eventz Ltd | London | 2024 |
| AS Explore Outdoor Limited | Crewe | 2014 |
| AS Keen AS Mustard Ltd | Huntingdon | 2022 |
| AS Movement LAB Ltd | Derby | 2022 |
| AS Personal Training Ltd | Glasgow | 2022 |
| AS Productions Ltd | London | 2023 |
| AS Sports Agency Limited | Hinckley | 2018 |
| AS Talent UK Ltd | London | 2023 |
| AS Verdi Ltd | Milton Keynes | 2012 |
| AS WE Explore Limited | London | 2019 |
| AS YOU Like IT Productions Limited | London | 2001 |
| AS1 Sports Tmrb UK Limited | London | 2020 |
| AS1 Sports UK Division Ltd | London | 2016 |
| AS7 Consultancy Ltd | Essex | 2023 |
| ASA 2000 Limited | Harrow | 2024 |
| ASA BFB Ltd | Bromsgrove | 2010 |
| ASA London Ltd. | London | 2017 |
| ASA Music Limited | St. Albans | 2019 |
| ASA Theatre Arts Limited | Bedworth | 2018 |
| Asad Farookhi Ltd | Gants Hill | 2013 |
| Asaf Flumi Ltd | London | 2016 |
| Asalive Limited | Ringwood | 2018 |
| Asambe Services Limited | London | 2024 |
| Asas (Anglo Sicilian Arts) Ltd | London | 2025 |
| Asat Ventures Limited | Leyland | 2013 |
| ASB Arts Ltd | Manchester | 2023 |
| ASB Footbal Academy Ltd | London | 2025 |
| ASB Industries Ltd | Yeovil | 2022 |
| ASB Play Centre Limited | Sheffield | 2022 |
| ASB Studio Ltd | Ruislip | 2026 |
| Asbbabartleygreen Ltd | Cradley Heath | 2024 |
| Asbbawinsongreen Limited | Brierley Hill | 2024 |
| Asbcmcr Ltd | Manchester | 2025 |
| Asben Performance Ltd | London | 2026 |
| Asbigazzitgets Ltd | Wickford | 2025 |
| Asbjj Ltd | Redhill | 2024 |
| ASC Performance Ltd | Malton | 2017 |
| ASC UK US Investors Ltd | London | 2022 |
| Ascalin Group Ltd | London | 2023 |