| Artesian (UK) Limited | Kingston Upon Thames | 2003 |
| Artesian Car Parks Limited | Liverpool | 2016 |
| Artesian One Ltd | London | 2024 |
| Artesian Tailoring Limited | London | 2013 |
| Artesian Transformational Leadership Limited | Chandler'S Ford | 2006 |
| Artesian Two Ltd | London | 2024 |
| Artesienne Limited | Poole | 2025 |
| Artface Fineart Ltd | London | 2017 |
| Artfacts.Net Ltd | London | 2001 |
| Artframes Limited | Glasgow | 2023 |
| Artful Fade & Shave Ltd | Leamington Spa | 2024 |
| Artful Inc Ltd | London | 2022 |
| Artful Toddler Limited | London | 2012 |
| Artgm Ltd | Lincoln | 2019 |
| Arthaco Limited | Bexley | 2018 |
| Arthouse Hair Salon Limited | Wednesbury | 2024 |
| Arthouse Hairdressing Ltd | Burnley | 2024 |
| Arthritis and Musculoskeletal Alliance | London | 2005 |
| Arthur Aesthetics Ltd. | Redcar | 2022 |
| Arthur Bell (Wakefield) Limited | Wakefield | 1954 |
| Arthur C. Towner (Stonemasons) Limited | St Leonards-On-Sea | 2019 |
| Arthur C. Towner Limited | East Sussex | 1938 |
| Arthur E Davey & Sons Limited | Bristol | 2013 |
| Arthur Grace Cleans Ltd | Heathfield | 2024 |
| Arthur Jary & Sons Limited | Norfolk | 1951 |
| Arthur Kershaw Funeral Services Limited | Sale | 2010 |
| Arthur Mccluskey Foundation | By Inverurie | 2004 |
| Arthur Owen Removals and Storage Ltd | Rhyl | 2018 |
| Arthur Peake & Sons (Funeral Service) Limited | Croesyceiliog Cwmbran | 2008 |
| Arthur Peake (Memorials) Limited | Cwmbran | 2008 |
| Arthur Razor Ltd | London | 2012 |
| Arthur Shirt and Company Limited | Sheffield | 2021 |
| Arthur Worsley Funeral Services Limited | Derbyshire | 2003 |
| Arthur's Barber Shop Limited | Croydon | 2023 |
| Arthur's New Style Best Seller Ltd | Walthamstow | 2025 |
| Arthur's PAL Ltd | Thatcham | 2025 |
| Arthur-Darkwa Limited | London | 2016 |
| Arthur-Witter Projects Ltd | Chester | 2014 |
| Arthurs Hairdressing Ltd | London | 2026 |
| Arthurs of Ashby Limited | Ashby-De-La-Zouch | 2018 |
| Arthurs Radio Limited | Buckingham | 2000 |
| Arthurs Radio Salon Ltd | Buckingham | 2026 |
| Arti Joshi Creative Limited | Pinner | 2017 |
| Artianne Limited | Guildford | 2012 |
| Artibrand Limited | Bo'Ness | 2016 |
| Article 19 | London | 1987 |
| Article 6 Limited | London | 2019 |
| Article Number Association (UK) Limited | London | 1999 |
| Artico Hair Limited | Solihull | 2008 |
| Articora Ltd | Barrow In Furness | 2022 |
| Articube UK Limited | Washington | 2012 |
| Articular 1NE Ltd | London | 2025 |
| Arties Art Intl UK Ltd | London | 2026 |
| Artifact Tattoo Ltd | Wellingborough | 2013 |
| Artifex Build Ltd | Towcester | 2020 |
| Artifex London Limited | London | 2002 |
| Artificial Grass and Decking Ltd | Birmingham | 2023 |
| Artificial Grass Clean Limited | Oldham | 2021 |
| Artificial Lawncare Services Scotland Ltd | Airdrie | 2019 |
| Artificial Living Ltd | Wigan | 2022 |
| Artifin Group (UK) Limited | London | 2017 |
| Artigiani Limited | London | 2017 |
| Artika U.K. Limited | London | 2020 |
| Artila's Hair and Beauty Ltd | London | 2021 |
| Artillery Productions Limited | Gerrards Cross | 2004 |
| Artimas ATV Ltd | Lochgilphead | 2025 |
| Artin Barber Ltd | Sale | 2024 |
| Artin Jewellery Limited | London | 2025 |
| Artingstall & Hind Limited | Stockport | 2021 |
| Artioukh (UK) Ltd. | Southport | 2016 |
| Artis Barbers Ltd | London | 2022 |
| Artisa Spa & Beauty Ltd | London | 2021 |
| Artisan Doors & Windows Ltd | London | 2025 |
| Artisan Estimation Ltd | Chadwell Heath | 2024 |
| Artisan Events Limited | Edinburgh | 2009 |
| Artisan Hair (Shepley) Limited | Huddersfield | 2023 |
| Artisan Hair Design Limited | Holmfirth | 2018 |
| Artisan Hair House Ltd | Eastbourne | 2014 |
| Artisan Hair UK Limited | Melton Constable | 2025 |
| Artisan Home & Garden Ltd | Alfreton | 2017 |
| Artisan INK Limited | Stoke-On-Trent | 2024 |
| Artisan Island Ltd | Weymouth | 2024 |
| Artisan Marble Renewal Ltd | London | 2025 |
| Artisan Memorials Limited | Canterbury | 2019 |
| Artisan Nails Ltd | Penarth | 2025 |
| Artisan Rollers Limited | Milton Keynes | 1988 |
| Artisan Salon Ltd | Bellshill | 2023 |
| Artisan Skin Clinic Ltd | Huddersfield | 2023 |
| Artisan Solutions UK Limited | Kings Langley | 2008 |
| Artisan Tattoos Limited | London | 2018 |
| Artisan Turkish Barber Ltd | Hinckley | 2023 |
| Artisan Watford Ltd | London | 2018 |
| Artisan Wigs London Ltd | Beckenham | 2022 |
| Artisans Studio Ltd | London | 2025 |
| Artissimobymaki Ltd | Linlithgow | 2025 |
| Artist Brighton Limited | Greenford | 2013 |
| Artist Horsham Limited | Greenford | 2023 |
| Artist Nails (BM) Limited | New Milton | 2018 |
| Artist Nails (Weymouth) Ltd | Dorset | 2017 |
| Artist Nails Ltd | Aberdeen | 2017 |