| Aquarius Gold Consult Ltd | Professional & scientific | 2017 |
| Aquashaw Limited | Real estate | 2022 |
| Aquasoft Ltd | Wholesale & retail | 2012 |
| Aquaspeed Limited | Water & waste | 1998 |
| Aquaspray Limited | Wholesale & retail | 2006 |
| Aquasprink Ltd | Construction | 2024 |
| Aquatic Competitions Ltd | Wholesale & retail | 2025 |
| Aquatica Marine Limited | Administrative & support | 2017 |
| Aquatilers Limited | Construction | 2006 |
| Aquevo Limited | Water & waste | 2017 |
| Aquevo London Ltd | Water & waste | 2022 |
| Aqui Properties Ltd | Real estate | 2024 |
| Aquila Bidco Limited | Financial services | 2023 |
| Aquila Fire Solutions Limited | Professional & scientific | 2018 |
| Aquila Midco 1 Limited | Financial services | 2023 |
| Aquila Midco 2 Limited | Financial services | 2023 |
| Aquila Renewable Limited | Financial services | 2013 |
| Aquila Velocitate Ltd | Real estate | 2024 |
| Aquila Worldwide Limited | Other services | 2025 |
| Aquilium Club Limited | Administrative & support | 2023 |
| Aquinium UK Ltd | Wholesale & retail | 2023 |
| Aquire 742 Ltd | Real estate | 2022 |
| AR & Co Group Limited | Financial services | 2026 |
| AR (Altrincham) Ltd | Hospitality | 2026 |
| AR AL Makkah Glass Company Ltd | Wholesale & retail | 2024 |
| AR Arch Limited | Wholesale & retail | 2024 |
| AR Brothers Ltd | Hospitality | 2019 |
| AR Business Solutions Ltd | Professional & scientific | 2002 |
| AR Capital Properties Ltd | Real estate | 2026 |
| AR Digital Surveys Ltd | Professional & scientific | 2021 |
| AR Dream Security Ltd | Administrative & support | 2022 |
| AR Elite Academy Ltd | Education | 2023 |
| AR Enterprise MCR Ltd | Wholesale & retail | 2026 |
| AR Foods Distribution Limited | Wholesale & retail | 2018 |
| AR Gold Properties Limited | Real estate | 2022 |
| AR GP Ltd | Health & social care | 2025 |
| AR Group Wholesale Wing Limited | Wholesale & retail | 2018 |
| AR Holdings Ltd | Real estate | 2023 |
| AR Horizon Ltd | Construction | 2022 |
| AR International Enterprises Ltd | Wholesale & retail | 2025 |
| AR International Group Limited | Wholesale & retail | 2026 |
| AR Lancashire Ltd | Manufacturing | 2024 |
| AR Medical Consultancy Ltd | Health & social care | 2015 |
| AR Paris Fashions Ltd | Wholesale & retail | 2023 |
| AR Programme Management Limited | Administrative & support | 2013 |
| AR Property Management and Development Ltd | Real estate | 2024 |
| AR Resiliency Ltd | Transport & logistics | 2025 |
| AR Sakes Ltd | Wholesale & retail | 2024 |
| AR Textiles Limited | Wholesale & retail | 2025 |
| AR Transformations Limited | Construction | 2017 |
| AR Travels Ltd | Transport & logistics | 2025 |
| AR Vascusurgical Ltd | Other services | 2011 |
| AR Weldcraft Ltd | Construction | 2023 |
| AR Zonix Ltd | Wholesale & retail | 2025 |
| Ar-Razzaq Clinical Services Ltd | Professional & scientific | 2021 |
| Ar-Razzaq Hull Ltd | Real estate | 2020 |
| Ar-Razzaq Investing Limited | Financial services | 2023 |
| ARA Aesthetics Ltd | Other services | 2025 |
| ARA Commercial Management Limited | Professional & scientific | 2018 |
| ARA SP VIU Ltd | Wholesale & retail | 2025 |
| Ara.Group Ltd | Wholesale & retail | 2017 |
| Araaf Properties Ltd | Real estate | 2025 |
| Araan Aesthetic Ltd | Health & social care | 2025 |
| Arab Bridge for General Supplies Ltd | Wholesale & retail | 2026 |
| Arab Delight Ltd | Hospitality | 2026 |
| Arab Dreams Trading Limited | Wholesale & retail | 2025 |
| Arab Future Technology Company Ltd | Administrative & support | 2025 |
| Arab International United Ltd | Other services | 2022 |
| Arab Path Company Ltd | Wholesale & retail | 2025 |
| Arab Science Trading Ltd | Wholesale & retail | 2019 |
| Arab Tradex Ltd | Wholesale & retail | 2021 |
| Arabat AL Reef Fruits & Veggies Ltd | Wholesale & retail | 2025 |
| Arabesque Abaya Ltd | Wholesale & retail | 2022 |
| Arabfins Ltd | Health & social care | 2025 |
| Arabia Global Limited | Wholesale & retail | 2025 |
| Arabia Organic Ltd | Wholesale & retail | 2024 |
| Arabian Engineering Solutions Ltd | Other services | 2021 |
| Arabian Life Limited | Wholesale & retail | 2021 |
| Arabian Nites (Manchester) Ltd | Hospitality | 2017 |
| Arabian Nites NW Ltd | Hospitality | 2025 |
| Arabian Shawrma Ltd | Hospitality | 2024 |
| Arabian Street Limited | Wholesale & retail | 2025 |
| Arabic Educational Trust | Education | 2016 |
| Arabic Food Ltd | Wholesale & retail | 2025 |
| Arabin Design Limited | Information & communication | 2024 |
| Arabisk Al-Sham Furniture Ltd | Wholesale & retail | 2026 |
| Arabjan Ltd | Wholesale & retail | 2025 |
| Arable Solutions Ltd | Professional & scientific | 2013 |
| Arad Star Co Ltd | Wholesale & retail | 2025 |
| Arafa Supermarket Ltd | Wholesale & retail | 2024 |
| Arafat Arabian Trading Ltd | Construction | 2025 |
| Arafat World Foods Ltd | Hospitality | 2025 |
| Aragon Estates Ltd | Real estate | 2022 |
| Arain Associates Ltd | Health & social care | 2025 |
| Arain Logistics Ltd | Transport & logistics | 2023 |
| Arain Medical Ltd | Health & social care | 2021 |
| Arak Properties and Business Ltd | Financial services | 2025 |
| Arak Trading Ltd | Construction | 2024 |
| Arako for OIL Manufacturing and Production Ltd | Manufacturing | 2026 |
| Aram Anaesthetic Services Limited | Health & social care | 2014 |