| Alpha UK Properties Limited | Real estate | 2013 |
| Alta Focus Ltd | Information & communication | 2006 |
| Alteratech Solutions Ltd | Information & communication | 2025 |
| Altimat Property Ltd | Construction | 2012 |
| Alto Hair Limited | Other services | 2022 |
| Altura Holdings PVT Ltd | Real estate | 2026 |
| Alwatan Property Services Limited | Real estate | 2016 |
| Am&Rm Holdings Ltd | Financial services | 2024 |
| AMA Signature Ltd | Manufacturing | 2024 |
| Aman Homes Ltd | Real estate | 2020 |
| Amazing 15 Limited | Professional & scientific | 2010 |
| Amazing Cleaners 2023 Limited | Manufacturing | 2023 |
| Ambience Laser Ltd | Other services | 2011 |
| Ambo Properties Ltd | Real estate | 2017 |
| Ambush Consultancy Ltd | Professional & scientific | 2019 |
| American Academy Limited | Extraterritorial | 2017 |
| American Hospital Cyprus Limited | Extraterritorial | 2013 |
| American Language Centre Limited | Education | 2022 |
| Amerikan Hastahanesi Kibris Limited | Extraterritorial | 2013 |
| Amfair Solutions Ltd | Wholesale & retail | 2021 |
| AMG Healthcare Limited | Wholesale & retail | 2004 |
| AMH Wellness Ltd | Public administration | 2024 |
| Amica Properties Ltd | Real estate | 2022 |
| Amigos Lounge Limited | Hospitality | 2025 |
| Amity Thorn Accounting Ltd | Professional & scientific | 2026 |
| AMY L Limited | Arts & recreation | 2022 |
| Amy’S Noodles Ltd | Hospitality | 2019 |
| Anadolu Estates Limited | Real estate | 2024 |
| Anaiah Limited | Professional & scientific | 2010 |
| Analia Limited | Real estate | 2024 |
| Analytics in Shipping Limited | Information & communication | 2018 |
| Ananya IT Solutions Limited | Information & communication | 2018 |
| Anastasi Properties Ltd | Real estate | 2002 |
| Anaya Consulting Ltd | Information & communication | 2018 |
| Andre Silentbloc Shock Absorber London Limited | Manufacturing | 1990 |
| Andrei Interiors Limited | Construction | 2019 |
| Andrew Norrington Ltd | Financial services | 2025 |
| Angelica Wholesale Limited | Manufacturing | 2020 |
| Angelicaestheticparlour Ltd | Health & social care | 2022 |
| Angeline Infotech Limited | Information & communication | 2021 |
| Angika Investments Ltd | Real estate | 2024 |
| Angulina Limited | Hospitality | 2022 |
| Anikson Ventures Limited | Real estate | 2025 |
| Anita's Kitchen Ltd | Hospitality | 2023 |
| ANN Cleaning Service Ltd | Administrative & support | 2019 |
| ANN Maternity & Nanny Care Limited | Other services | 2011 |
| Annam Foods Limited | Hospitality | 2025 |
| Anne Care Limited | Health & social care | 2016 |
| Annie Amour Limited | Financial services | 2015 |
| Annros Limited | Wholesale & retail | 1995 |
| Anooj Limited | Professional & scientific | 1994 |
| Anoojish PLC | Extraterritorial | 1995 |
| Anoushka Ltd | Financial services | 2011 |
| ANR Roofing Ltd | Construction | 2025 |
| ANS Mughal Ltd | Health & social care | 2023 |
| Ansed Ltd | Information & communication | 2004 |
| Ansima Ltd | Real estate | 2017 |
| Antares Systems Ltd | Wholesale & retail | 2022 |
| Anthony Ward Associates Limited | Professional & scientific | 2009 |
| Anton Rose Limited | Real estate | 2018 |
| Antrepolondon Ltd | Professional & scientific | 2019 |
| ANU Prasath Limited | Wholesale & retail | 2019 |
| ANY Kare Global Ltd | Administrative & support | 2019 |
| AO Catering Limited | Hospitality | 2024 |
| AO Holdings (London) Limited | Real estate | 2021 |
| AOC Edit Ltd | Wholesale & retail | 2018 |
| Aola Collective Ltd | Hospitality | 2025 |
| AP (Surbiton) Limited | Real estate | 2017 |
| AP Assets Limited | Construction | 2010 |
| AP Capital Advisory Limited | Real estate | 2025 |
| AP Developments (London) Limited | Construction | 2017 |
| AP Group (JV) Limited | Financial services | 2022 |
| AP Group Holdings Limited | Financial services | 2022 |
| AP Holdings PVT Ltd | Financial services | 2025 |
| Apex Mechanical Solutions Limited | Construction | 2017 |
| Apexstra Ltd | Real estate | 2022 |
| Apon Properties Limited | Real estate | 1999 |
| Appearances Redefined Selsdon Ltd | Other services | 2014 |
| April&June Law Limited | Professional & scientific | 2018 |
| Apro Services Limited | Information & communication | 2024 |
| APS Construction (SW) Ltd | Construction | 2018 |
| AQ & SH Ltd | Wholesale & retail | 2026 |
| Aqrocert Ltd | Professional & scientific | 2019 |
| Aquarius Recruitment Ltd | Administrative & support | 2012 |
| Aquila Solutions Limited | Information & communication | 1996 |
| Aquilent Limited | Administrative & support | 2020 |
| Arabian Casa Ltd | Real estate | 2018 |
| Aran RK Limited | Hospitality | 2016 |
| Aray Holdings Ltd | Real estate | 2026 |
| ARC Business Group Ltd | Professional & scientific | 2020 |
| ARC Designs Limited | Construction | 1996 |
| ARC11 Camden Ltd | Hospitality | 2023 |
| Arcadia Renovations Limited | Construction | 2011 |
| Archive Automotive Ltd | Wholesale & retail | 2026 |
| Arck Support Limited | Health & social care | 2022 |
| Ardent Children's Day Nursery Ltd | Real estate | 2006 |
| Argyll Scaffolding Limited | Construction | 2009 |
| Ariyaan Ltd | Hospitality | 2019 |
| Ariyanayagi Amman Limited | Real estate | 2026 |
| Arkadyne Limited | Professional & scientific | 2025 |