| Adra Trade Limited | Wholesale & retail | 2020 |
| Adrenochrome Energy Ltd | Manufacturing | 2025 |
| Adrianne Langley Ltd | Information & communication | 2024 |
| Adrienne Therapy Ltd | Health & social care | 2024 |
| ADS (NW) Ltd | Administrative & support | 2021 |
| ADS INT Limited | Other services | 2018 |
| Adsq Ltd | Wholesale & retail | 2024 |
| Aduampholdings Company Ltd | Financial services | 2025 |
| Aduo Ltd | Wholesale & retail | 2025 |
| ADV Devtech Ltd | Information & communication | 2022 |
| Adva Property Development Ltd | Other services | 2021 |
| Advait Property Ltd | Real estate | 2025 |
| Advanced Biosignal Wellness Ltd | Wholesale & retail | 2026 |
| Advanced Europe Services Ltd | Professional & scientific | 2010 |
| Advanced Research Centre Ltd | Information & communication | 2026 |
| Advanced Social Work Consultancy Ltd | Health & social care | 2022 |
| Advancedtec Ltd | Professional & scientific | 2010 |
| Advancedtec Property Solutions Ltd | Real estate | 2021 |
| Advantel Consulting Ltd | Professional & scientific | 2018 |
| Advenue Limited | Information & communication | 2017 |
| Advise HR Limited | Administrative & support | 2015 |
| Advising Ltd | Wholesale & retail | 2023 |
| Advision Group Ltd | Professional & scientific | 2020 |
| Advocates Guild International Ltd | Health & social care | 2025 |
| Adware Ltd | Information & communication | 2024 |
| Adwave Solutions Ltd | Wholesale & retail | 2025 |
| Adya Services Ltd | Information & communication | 2021 |
| Aegis Education Limited | Education | 2025 |
| Aegis Talent Mobility Limited | Information & communication | 2025 |
| Aelfrith Court Management Company Limited | Households | 2021 |
| Aelfsige Consulting Limited | Information & communication | 2008 |
| Aelorn Eyewear Trading Limited | Wholesale & retail | 2025 |
| AEM Training and Consultancy Ltd | Health & social care | 2018 |
| Aerion Eco Ltd | Wholesale & retail | 2026 |
| Aero Sporty Gear Ltd | Wholesale & retail | 2026 |
| Aerse Ltd | Wholesale & retail | 2026 |
| Aerus Media Limited | Information & communication | 2024 |
| Aesrex Ltd | Extraterritorial | 2026 |
| Aestogal Ltd | Manufacturing | 2025 |
| AET4 Concepts Ltd | Hospitality | 2025 |
| Aeterna Global Ltd | Wholesale & retail | 2025 |
| Aeterna Systems Group Ltd | Information & communication | 2025 |
| Aeternis Business Ltd | Wholesale & retail | 2025 |
| Aethelred Mercantile Ltd | Wholesale & retail | 2025 |
| Aether Adornments Ltd | Wholesale & retail | 2024 |
| Aether Arts Ltd | Wholesale & retail | 2024 |
| Aether Global Ltd | Wholesale & retail | 2025 |
| Aether Global Media Ltd | Information & communication | 2025 |
| Aethercore Co., Limited | Wholesale & retail | 2025 |
| Aethercraft Global Ltd | Wholesale & retail | 2024 |
| Aetheris Group Ltd | Wholesale & retail | 2025 |
| Aetheris Health Ltd | Wholesale & retail | 2025 |
| Aetheris Technologies Ltd | Wholesale & retail | 2025 |
| Aetheris Trade Co., Limited | Wholesale & retail | 2025 |
| Aetherium Trade Ltd | Wholesale & retail | 2025 |
| Aetherplex Digital Ltd | Wholesale & retail | 2026 |
| Aetrixstudio Ltd | Information & communication | 2025 |
| AFA Pro Ltd | Wholesale & retail | 2025 |
| Affinity Christian Dating Limited | Other services | 2024 |
| Affixo Limited | Wholesale & retail | 2025 |
| Afghan Asia Open Academy Ltd | Education | 2026 |
| AFM Technology Co., Ltd. | Administrative & support | 2015 |
| Afmis Ltd | Wholesale & retail | 2025 |
| Afoundry Ltd | Information & communication | 2026 |
| Afreenv Ltd | Real estate | 2026 |
| Africa Invest Ltd | Professional & scientific | 2024 |
| Afriverse Creative Hub CIC | Wholesale & retail | 2025 |
| Afro European Collage for Humanities and Management Science Ltd | Education | 2023 |
| Afroagora Holdings (UK) Limited | Households | 2022 |
| Afroclassy Ltd | Wholesale & retail | 2022 |
| Afroditi Tsetoura Ltd | Extraterritorial | 2022 |
| Afrosocial Ltd | Hospitality | 2025 |
| Afya Trading Co., Ltd | Wholesale & retail | 2025 |
| AG FLY AI Ltd | Wholesale & retail | 2026 |
| Agaril Limited | Wholesale & retail | 2025 |
| Agartha Telekom Ltd | Information & communication | 2021 |
| Agarwal Ventures Ltd | Wholesale & retail | 2026 |
| Ageless YOU Ltd | Education | 2025 |
| Agileavenue Ltd | Wholesale & retail | 2023 |
| Agineer Ltd | Professional & scientific | 2025 |
| AGL Tax Solutions LLP | | 2009 |
| Agmatrix Ltd | Information & communication | 2025 |
| Agog Angel Ltd | Financial services | 2024 |
| Agreen Co., Limited | Wholesale & retail | 2005 |
| Agricultural Services LLP | | 2021 |
| Agrifilm Ltd | Wholesale & retail | 2023 |
| AH Professional Consulting Limited | Professional & scientific | 2010 |
| Aheadai Ltd | Information & communication | 2026 |
| AHF Motor Services Ltd | Wholesale & retail | 2023 |
| AHK Brand Limited | Wholesale & retail | 2025 |
| Ahmad Outlet Limited | Wholesale & retail | 2025 |
| Ahmed Abdelaziz Mahmoud Saber Ltd | Information & communication | 2025 |
| AI Engineer Limited | Administrative & support | 2025 |
| AI First Global Ltd | Information & communication | 2025 |
| AI Labs Europe Ltd | Information & communication | 2025 |
| AI Logik Ltd | Information & communication | 2026 |
| AI MA Trading Limited | Administrative & support | 2025 |
| AI Mart Ltd | Wholesale & retail | 2025 |
| AI SI LU Ltd | Wholesale & retail | 2025 |
| AI Solutions Group Ltd | Financial services | 2025 |