| Arrowdot Ltd | London | 2024 |
| Arrowfin Limited | Dunfermline | 2014 |
| Arrowfy Ltd | London | 2020 |
| Arrowhead Entertainment Group Ltd | London | 2025 |
| Arrowhead Marketing Limited | London | 2025 |
| Arrowhead Solutions Limited | Wigan | 2014 |
| Arrowhead Systems Limited | Staffordshire | 1992 |
| Arrowhead Technology Limited | Oxford | 2022 |
| Arrowknee Ltd | Bolton | 2024 |
| Arrowline Business Intelligence Limited | London | 2010 |
| Arrowmail Ltd | Whittington | 2000 |
| Arrowmist Limited | Nottingham | 2008 |
| Arrowpoint Books Ltd | Fordingbridge | 2025 |
| Arrowpoint Mail Limited | Wolverhampton | 2009 |
| Arrows Fleet Management Solutions Ltd | Bridlington | 2020 |
| Arrows Tracking Solutions Ltd | Hull | 2009 |
| Arrowsmith Analytics Group Ltd | Beverley | 2024 |
| Arrowsmith Design Limited | Banff | 2006 |
| Arrowsmith, Bowman & Fletcher Limited | Lauder | 2007 |
| Arrowvista Ltd | London | 2022 |
| Arrox Ltd | Walthamstow | 2015 |
| Arroyo Mons Limited | London | 2026 |
| Arroyo Z Limited | London | 2018 |
| Arroyo-Rocha Design Ltd | St. Albans | 2020 |
| Arrp Ltd | London | 2023 |
| Arrs Solutions Limited | Reading | 2019 |
| Arrt Integration Ltd | London | 2020 |
| Arrway Ltd | London | 2023 |
| Arrx Ltd | Bath | 2025 |
| Arryanz Limited | London | 2010 |
| Arrys Limited | Purley | 2022 |
| ARS & Fortis Limited | Belfast | 2024 |
| ARS - Asset Recovery Solutions Limited | Mansfield | 2019 |
| ARS Akademi & Danismanlik Hizmetleri Ltd | London | 2024 |
| ARS Artium Ltd | London | 2000 |
| ARS Consulting Group Ltd | Ascot | 2018 |
| ARS Developer Ltd | Stoke-On-Trent | 2026 |
| ARS Facilities Limited | Ilford | 2023 |
| ARS Infotech Ltd | Bexley | 2010 |
| ARS IT Consultancy Ltd | London | 2019 |
| ARS Secta Limited | London | 2013 |
| ARS Semantica Ltd | London | 2016 |
| ARS Soft Ltd | Milton Keynes | 2013 |
| ARS Software Solutions PVT Ltd | Shoreham-By-Sea | 2022 |
| ARS Solutions Limited | Aylesbury | 2016 |
| ARS Tech House Ltd | Bristol | 2025 |
| ARS Tech Ltd | Nottingham | 2023 |
| ARS Tech Solutions Ltd | Chelmsford | 2025 |
| ARS Technology Limited | Cardiff | 2025 |
| Arsal Technologies Limited | Windsor | 2013 |
| Arsella Goods Limited | London | 2024 |
| Arsenal Broadband Limited | London | 2000 |
| Arsenal Search Limited | Welwyn | 2022 |
| Arsenale Limited | London | 2026 |
| Arsenic Films Limited | London | 2024 |
| Arsh Innovative IT Ltd | Rugby | 2017 |
| Arsh Tech Solutions Ltd | Manchester | 2026 |
| Arsha Accountants and IT Solutions Ltd | Bury St. Edmunds | 2026 |
| Arshad Insight + Data Ltd | Nuneaton | 2016 |
| Arshida Ltd | London | 2025 |
| Arshith Consultancy Services Ltd | London | 2011 |
| Arsho Ltd | Slough | 2015 |
| Arshun IT Help Ltd | Liverpool | 2026 |
| Arsim Tech Limited | Orpington | 2024 |
| Arsin Technology and Software Ltd | London | 2025 |
| Arsl Emporioum Limited | Glascow | 2024 |
| Arslan Zahid Innovations Ltd | Stoke-On-Trent | 2024 |
| Arslansoft Ltd | London | 2025 |
| Arsmate Ltd | London | 2025 |
| Arsoft Ltd | London | 2023 |
| Arsoultions Ltd | London | 2022 |
| Arsoy Group Ltd | Lytchett Matravers | 2022 |
| Arston Business Limited | Liverpool | 2024 |
| Arsu Technogies Private Limited | Staines-Upon-Thames | 2026 |
| Art & Craft Video Ltd | Maidenhead | 2022 |
| Art & Graft Ltd | London | 2010 |
| Art & Literature Ltd | Cardiff | 2003 |
| Art & Medicine Ltd | London | 2025 |
| Art & Seat C.I.C. | Edinburgh | 2024 |
| Art & Soul Communications Limited | North Humberside | 1999 |
| Art Access Services Ltd | London | 2020 |
| Art and Adventure Limited | London | 2003 |
| Art and Design Pro Ltd | London | 2023 |
| Art and Experience Design Ltd | Milton Keynes | 2021 |
| Art and Ideas Limited | London | 2014 |
| Art and Minds Ltd | Aylesbury | 2023 |
| Art and Science UK Limited | London | 2024 |
| Art App Ltd | London | 2025 |
| Art Appreciation Limited | Plymouth | 2020 |
| Art Asia Limited | London | 2011 |
| Art Beats Collective C.I.C. | Bristol | 2024 |
| Art Best Design Ltd | Manchester | 2019 |
| Art Books Publishing Ltd | London | 2010 |
| Art Breath Limited | London | 2015 |
| Art Business Group Ltd | London | 2025 |
| Art Circles Ltd | London | 2026 |
| Art City Production Ltd | Ruislip, | 2025 |
| Art Click Ltd | Liverpool | 2021 |
| Art Computer Consultancy Ltd | Corby | 2000 |
| Art Computing Limited | Chipping Norton | 2002 |