| Archery Fit Ltd | London | 2014 |
| Archery GB Limited | Newport | 2006 |
| Archery UK Limited | Newport | 2003 |
| ARCHERY4U Limited | Banbridge | 2019 |
| Archesboxing Limited | Croydon | 2012 |
| Archetype Fine Art Services Limited | Stroud | 2018 |
| Archfit Training Limited | London | 2025 |
| Archgate Properties Limited | London | 2003 |
| Archibald Promotions Ltd | Poole | 2017 |
| Archie Blue Ltd | Newcastle-Under-Lyme | 2021 |
| Archie C Ltd | Windsor | 2025 |
| Archie Clark Racing Ltd | Hinckley | 2025 |
| Archie Davies 87 Motorsport Ltd | Baldock | 2025 |
| Archie Forrest Limited | Glasgow | 2010 |
| Archie Johnson Racing Limited | Nottingham | 2023 |
| Archie Kane Ltd | Cumnock | 2021 |
| Archie Lovatt Racing Limited | Derby | 2020 |
| Archie Pearce Racing Ltd | Doncaster | 2025 |
| Archie Reid Enterprises Limited | Cranleigh | 2025 |
| Archie Sharp Limited | Dartford | 2018 |
| Archie Stirling Limited | London | 1976 |
| Archie Watson Racing Limited | Hungerford | 2016 |
| Archimedes Eventing Ltd | London | 2021 |
| Archipelago Arts Collective Ltd | Sheffield | 2019 |
| Archipelago Arts Ltd | Glasgow | 2025 |
| Archipode Limited | Warrington | 2016 |
| Architecture in Perspective Ltd | London | 2013 |
| Architrail Limited | Penryn | 2009 |
| Archival Digital Ltd | London | 2024 |
| Archival Limited | London | 2013 |
| Archive Asset Limited | Glasgow | 2021 |
| Archive Document Data Storage Limited | Stanford-Le-Hope | 2004 |
| Archive Facilities (Southend) Limited | Epping | 2009 |
| Archive Ireland C.I.C. | Londonderry | 2024 |
| Archive Liverpool Ltd | London | 2025 |
| Archive Nexus Solutions Ltd | London | 2025 |
| Archive Studio Limited | Bradwell, Braintree | 2011 |
| Archive UK Holdings Limited | London | 2021 |
| Archives & Collections Trading Co. Ltd. | Salisbury | 2019 |
| Archmage Studios Ltd | London | 2022 |
| Archman Music Ltd | Iver | 2023 |
| Archon Combine Limited | Halesowen | 2010 |
| Archrealm Action Design Limited | Ware | 2025 |
| Archway Fitness Ltd | London | 2022 |
| Archway Leisure Limited | Saltburn-By-The-Sea | 2020 |
| Archway Productions Ltd | Ross-On-Wye | 2012 |
| Archway Screenwriting Limited | Stevenage | 2021 |
| Archway Sport and Leisure Limited | Saltburn-By-The-Sea | 2025 |
| Archway Theatre Company Limited | Horley | 1956 |
| Arciform Limited | Liverpool | 2011 |
| Arciv Limited | Hitchin | 2021 |
| Arclian Ltd | Canterbury | 2020 |
| Arco Arts Management Limited | Andover | 2024 |
| Arco String Quartet Ltd | Holywood | 2026 |
| Arcola Theatre Limited | London | 2000 |
| Arcola Theatre Production Company | London | 2004 |
| Arcor Advisory Ltd | London | 2013 |
| Arcot Hall Golf Club Limited | Northumberland | 1909 |
| Arcsecond Limited | Kingston Upon Thames | 2024 |
| Arctic Lake Music Limited | London | 2020 |
| Arctic Quest Limited | Cheltenham | 2013 |
| Arctic Song Limited | London | 2003 |
| Arctic Warbler Ltd | Cheltenham | 2001 |
| Arcufit Limited | Paisley | 2023 |
| Arcusworld Limited | London | 2025 |
| ARD Design Limited | Bourne End | 2007 |
| ARD LAD Motive Limited | London | 2024 |
| ARD Martial Arts Limited | London | 2021 |
| ARD Uppal Limited | Leeds | 2016 |
| Arda Productions Limited | Insch | 2011 |
| Ardal Leagues Northern Ltd | Gresford | 2020 |
| Ardal Leagues Southern Ltd | Pontyclun | 2020 |
| Ardallie Enterprises Ltd | Near Peterhead | 2025 |
| Ardboe Community Projects Ltd | Dungannon | 2004 |
| Ardcorps Limited | Mill Hill | 2020 |
| Ardeer Golf Course - GT Ltd | Stevenston | 2026 |
| Ardeerpromrun Ltd | Saltcoats | 2026 |
| Arden Active CIC | Coventry | 2022 |
| Arden Fishing Club Limited | Northallerton | 2003 |
| Arden International Limited | Banbury | 1999 |
| Arden International Motorsport Limited | Banbury | 1997 |
| Arden Lawn Tennis Club Limited | Warks | 1931 |
| Arden Motorsport Limited | Banbury | 1996 |
| Arden RDA Group | Over Whitacre | 2012 |
| Ardent Art Ltd | London | 2014 |
| Ardent Censer Ltd | Ruislip, | 2025 |
| Ardent Fireworks Displays Ltd | York | 2018 |
| Ardent Music Limited | Cobham | 2003 |
| Ardi CHA Entertainment Limited | London | 2017 |
| Ardingly Rowing Club Ltd | Haywards Heath | 2014 |
| Ardingly Village Club | Haywards Heath | 2008 |
| Ardington House Ltd | Wantage | 1998 |
| Ardmore Rural Community Association | Lurgan | 2009 |
| Ardnabannon House Ltd | Castlewellan | 2025 |
| Ardnamurchan Lighthouse Trust | Acharacle | 1996 |
| Ardor Artists Limited | London | 2013 |
| Ardor Motorsports Limited | Hythe | 2015 |
| Ardor Padel Ltd | High Wycombe | 2026 |
| Ardour London Ltd | Northwood | 2018 |
| Ardourx Media Ltd | Potters Bar | 2023 |