| Aquizer Ltd | Oxford | 2025 |
| Aqulock Ltd | London | 2025 |
| Aqumulate Consultancy Ltd | Nottingham | 2025 |
| Aquotiq Ltd | Louth | 2026 |
| Aqutron Technology Limited | Wickford | 2014 |
| Aquus Limited | Newport | 2018 |
| Aquvalue Limited | Wimborne | 2019 |
| Aquvious Ltd | London | 2022 |
| Aquvis Ltd | London | 2024 |
| AQW Limited | Poole | 2017 |
| Aqwa Solutions Ltd | London | 2025 |
| Aqxii Limited | London | 2025 |
| Aqza IT Services Limited | Nottingham | 2024 |
| AR & RR Education Ltd | Poole | 2015 |
| AR Agile Consultancy Ltd | Bristol | 2020 |
| AR Broadcast Services Limited | Reading | 2025 |
| AR Cables Limited | Leeds | 2003 |
| AR Camera Ltd | London | 2025 |
| AR Cloud Solutions Ltd | Sunbury-On-Thames | 2020 |
| AR Codeworks Ltd | London | 2026 |
| AR Collect Ltd | London | 2019 |
| AR Collezione Ltd | Milton Keynes | 2025 |
| AR Commercial Consulting Limited | Dunfermline | 2025 |
| AR Communications Limited | London | 2022 |
| AR Company Formations Limited | Preston | 2010 |
| AR Competitions Ltd | Poole | 2026 |
| AR Complete Solutions Limited | London | 2017 |
| AR Computers Limited | Newcastle Under Lyme | 2014 |
| AR Contracting Ltd | Ilford | 2012 |
| AR Creators Media Ltd | Bury St. Edmunds | 2025 |
| AR Data & AI Limited | Wimborne | 2025 |
| AR Data Solutions Ltd | Slough | 2021 |
| AR Digital Communication Ltd | London | 2013 |
| AR Digital Group Ltd | London | 2026 |
| AR Digital Media Publishing Limited | Bangor | 2022 |
| AR Dodd Ltd | Ruislip | 2007 |
| AR FMM Ltd. | Luton | 2022 |
| AR Global IT Services Ltd | London | 2019 |
| AR Griffin Limited | Alton | 2006 |
| AR Group Ventures Limited | Canterbury | 2025 |
| AR Hive Ltd | Brighton | 2023 |
| AR Information Technology Ltd | Hounslow | 2018 |
| AR Infosys Limited | Oldham | 2018 |
| AR Innovations Ltd | Farnham | 2025 |
| AR Internet Ltd | Birmingham | 2020 |
| AR IT Consultancy Ltd | Shepperton | 2015 |
| AR IT Consultancy of UK Limited | Liverpool | 2020 |
| AR IT Limited | Aberdeen | 2024 |
| AR IT Support Limited | Newport | 2020 |
| AR ITC Ltd | Nottingham | 2018 |
| AR Lounge Limited | Stoke-On-Trent | 2018 |
| AR Matrix Ltd | Nottingham | 2026 |
| AR Media Ltd | Exmouth | 2024 |
| AR Media Productions Limited | Northampton | 2013 |
| AR Micro System Limited | Cardiff | 2019 |
| AR Music Management Ltd | Lochwinnoch | 2023 |
| AR Music Publishing Ltd | London | 2021 |
| AR PM Consulting Limited | Newbury | 2015 |
| AR Research Ltd | Birmingham | 2025 |
| AR Sales & Recruitment Limited | London | 2020 |
| AR Securetech Ltd | Caerphilly | 2025 |
| AR Security Solutions Ltd | Milton Keynes | 2023 |
| AR SEO Consultant Ltd | Edinburgh | 2025 |
| AR Software Consulting Ltd | Haywards Heath | 2025 |
| AR Sports Operations Limited | Canterbury | 2025 |
| AR Studios Ltd | London | 2023 |
| AR Tech Limited | Birmingham | 2025 |
| AR Tech Support Ltd | Slough | 2023 |
| AR Techno Ltd | Enfield | 2025 |
| AR Technologies Limited | London | 2017 |
| AR Technology Consultants Ltd | Bristol | 2021 |
| AR Television Network Ltd | Dagenham | 2021 |
| AR THR33 Limited | London | 2022 |
| AR Trade Retail Limited | London | 2021 |
| AR UK Solutions Limited | Rickmansworth | 2026 |
| AR Veritas Consulting Limited | Keighley | 2025 |
| AR Vision-Euro Technology Ltd | Uckfield | 2018 |
| AR Waith Consulting Cyfyngedig | Mold | 2025 |
| AR Watersprings Ltd | London | 2016 |
| AR Web Design Ltd | Honiton | 2020 |
| Ar&D Consulting Ltd | London | 2024 |
| Ar's Collection Ltd | Southsea | 2012 |
| Ar-Cardat Civil Engineering Ltd | Folkestone | 2026 |
| Ar-Rahmat Limited | Croydon | 2015 |
| Ar-Rawda Consultancy Ltd | Solihull | 2024 |
| Ar-Razzaakh Ltd | Norwich | 2025 |
| Ar-Sq Limited | Sevenoaks | 2023 |
| Ar-Tug IT Service Limited | London | 2021 |
| Ar.Barbandi Ltd | London | 2023 |
| AR8 Support Services Ltd | Chesham | 2026 |
| AR9 Ltd | Romford | 2013 |
| AR97 Express Ltd | Ilford | 2022 |
| ARA AI Consultancy Ltd | Northampton | 2025 |
| ARA AYA Limited | London | 2024 |
| ARA Business Consulting Limited | Purley | 2015 |
| ARA Business Ltd | Romford | 2011 |
| ARA Care & Events Solutions UK Ltd | West Molesey | 2023 |
| ARA Commercial Limited | Bristol | 2012 |
| ARA Consultancy Group Ltd | London | 2026 |
| ARA Consultancy Ltd | London | 2025 |