| ARA Global Enterprises Ltd | Preston | 2021 |
| ARA Intelligence Limited | London | 2023 |
| ARA International Ltd | London | 2025 |
| ARA IT Consultancy Limited | Oxford | 2014 |
| ARA Real Estate Limited | Oxford | 2019 |
| ARA Risk Management Limited | Edenbridge | 2014 |
| ARA Software Limited | Leicester | 2026 |
| ARA Solutions Limited | Peterborough | 2023 |
| ARA Web Solutions Ltd | London | 2023 |
| Ara's Publications Ltd | Birmingham | 2023 |
| Araa IT Services Ltd | Milton Keynes | 2022 |
| Araa Solutions Limited | Aylesbury | 2022 |
| Araadigit Ltd | Hemel Hempstead | 2008 |
| Arab Colleg for Humanities and Social Sciences A.U.H.S.S (Ahumi) Ltd | London | 2023 |
| Arab Digest Ltd | London | 2016 |
| Arab Drumz Ltd | London | 2020 |
| Arab Encyclopedia & Books House Ltd | London | 2021 |
| Arab Founders Ltd | London | 2025 |
| Arab INK Ltd | Bradford | 2024 |
| Arab Medico Ltd | Morden | 2021 |
| Arab Press House Limited | London | 2025 |
| Arab Research and Information Company Ltd | Banbury | 1999 |
| Arab Tourism Magazine Ltd | Cardiff | 2025 |
| Arab Voice Choice Ltd | London | 2016 |
| Arab-African Union for Economic Integration and Joint Cooperation Ltd | Cardiff | 2021 |
| Araba Rose Ltd | London | 2021 |
| Arabbook Ltd | London | 2024 |
| Arabella Intelligence Ltd | London | 2020 |
| Arabena Associates Ltd | Tunbridge Wells | 2025 |
| Arabesque Labs Ltd | London | 2025 |
| Arabi's Ltd | High Wycombe | 2020 |
| Arabian Entertainment UK Ltd | London | 2024 |
| Arabian Gulf Wealth Ltd | London | 2025 |
| Arabian Library Limited | Surbiton | 2002 |
| Arabian Media Productions Limited | London | 2022 |
| Arabian Publishing Ltd | Surbiton | 2002 |
| Arabian Tech Ltd | London | 2024 |
| Arabiana Limited | Derby | 2018 |
| Arabianliving Ltd | Edinburgh | 2025 |
| Arabic & Islamic Information Services Ltd | Glasgow | 2015 |
| Arabic European Services Ltd | London | 2011 |
| Arabic Feather Ltd | London | 2025 |
| Arabic Music Academy in London Ltd. | Lancaster | 2017 |
| Arabic Simplified Limited | London | 2024 |
| Arabic to Zoology Limited | Old Oxted | 2010 |
| Arabic Workshop Ltd | London | 2018 |
| Arabica AI Ltd | Baldock | 2025 |
| Arabin Design Limited | Manchester | 2024 |
| Arabista Ltd | London | 2026 |
| Arabix Ltd | London | 2023 |
| Arable Consulting Limited | Inverness | 2021 |
| Arableintel Ltd | Havant | 2026 |
| Arabsky Group Ltd | London | 2026 |
| Arabtweaks Ltd | Cardiff | 2025 |
| Aracari Apps Limited | East Ham | 2018 |
| Aracari Consulting Limited | Halifax | 2026 |
| Aracari Digital Ltd | London | 2026 |
| Araceli Lopes Ltd | Warrington | 2024 |
| Arach Solutions Ltd | Halstead | 2018 |
| Arachna Computing & Design Limited | Bristol | 1999 |
| Arachna Digital Ltd | York | 2024 |
| Arachna Ltd | Wolverhampton | 2005 |
| Arachne Interactive Ltd | London | 2025 |
| Arachne Press Limited | London | 2012 |
| Arachnid Labs Limited | London | 2013 |
| Arachnid Press Ltd | Livingston | 2020 |
| Arachny Ltd | Guildford | 2015 |
| Arachnys Information Services Limited | Pinner | 2010 |
| Arachsys Internet Services Limited | Kidderminster | 1998 |
| Aracia Ltd | London | 2025 |
| Aracion Limited | London | 2014 |
| Arad Consultants Ltd | Newcastle Emlyn | 2012 |
| Aradata Ltd | London | 2021 |
| Aradesia Ltd | Bristol | 2020 |
| Aradeva Ltd | England | 2026 |
| Aradhya Datatech Solution Ltd | Slough | 2025 |
| Aradhya Solution Ltd | Harrow | 2013 |
| Aradhya Ventures Limited | Bracknell | 2024 |
| Aradin Ltd | London | 2019 |
| Aradon Ltd | Salford | 1999 |
| Araein Accounting Services Ltd | Luton | 2019 |
| Araelis Advisory Ltd | Stafford, | 2026 |
| Araf Prime Ltd. | Walthamstow | 2024 |
| Arafat Miah Ltd | Cardiff | 2022 |
| Arafezone Limited | London | 2020 |
| Araglen Ltd | London | 2024 |
| Arago Consultancy Ltd | Liverpool | 2012 |
| Aragon Infosec Ltd | Corsham | 2012 |
| Aragorn Groupe Limited | Windsor | 2013 |
| Aragorn Hosting Ltd | Chichester | 2025 |
| Arahi Ltd | London | 2021 |
| Arai Consulting Limited | London | 2014 |
| Arai Tech Limited | Kettering | 2024 |
| Arai Technologies Ltd | Coventry | 2025 |
| Arain & Associates Limited | Wirral | 2013 |
| Arain X Ltd | London | 2019 |
| Araind Limited | Bromley | 2022 |
| Arajagopalan Limited | Reading | 2025 |
| Arak Services Solutions Ltd | Romford | 2023 |
| Arakcore Tech Limited | London | 2026 |