| AN Turas (North) Ltd | Professional & scientific | 2020 |
| An-Nasr & Al-Kahf Solutions Ltd | Public administration | 2023 |
| ANA California Ltd | Extraterritorial | 2010 |
| ANA Carr Commercial Cleaning Ltd | Administrative & support | 2023 |
| ANA Impact Academy Ltd | Education | 2024 |
| ANA Kolarski Limited | Professional & scientific | 2019 |
| ANA Transport (MCR) Ltd | Transport & logistics | 2018 |
| ANA UK Services Ltd | Other services | 2025 |
| Anadi Ltd | Extraterritorial | 2024 |
| Anadolu Meat Products Ltd | Wholesale & retail | 2021 |
| Anaesthesia Care Limited | Health & social care | 2022 |
| Anaesthesia Medics Ltd | Health & social care | 2019 |
| Anageria Limited | Health & social care | 2022 |
| Anagonou Ltd | Wholesale & retail | 2026 |
| Anah Enterprise Ltd | Wholesale & retail | 2025 |
| Anakin International Ltd | Real estate | 2020 |
| Analtica Limited | Professional & scientific | 2005 |
| Analyse Local Limited | Information & communication | 2025 |
| Analysys Limited | Information & communication | 1984 |
| Analytia Partners Limited | Information & communication | 2017 |
| Analytically Limited | Information & communication | 2025 |
| Analytics Consulting Limited | Professional & scientific | 2025 |
| Anam Grace Group Limited | Financial services | 2022 |
| Anam Grace Limited | Health & social care | 2015 |
| Anam Grace Properties Limited | Real estate | 2022 |
| Anam-Store Ltd | Wholesale & retail | 2025 |
| Anamedical Ltd | Other services | 2016 |
| Anamika Group | Education | 2019 |
| Anams Properties Ltd | Real estate | 2025 |
| Anand Alpine UK Ltd | Wholesale & retail | 2026 |
| Anand Shine MCR Limited | Wholesale & retail | 2022 |
| Anand Vivek Josan Ltd | Health & social care | 2011 |
| Ananda Centre for Cancer Research CIC | Professional & scientific | 2025 |
| Ananse Creation and Clothing Ltd | Wholesale & retail | 2025 |
| Anansi Holdings Limited | Information & communication | 2025 |
| Ananta Bazaar Ltd | Wholesale & retail | 2026 |
| Ananta Realty Ltd | Real estate | 2025 |
| Anantaya Global Ltd | Wholesale & retail | 2026 |
| Ananttambe.Com Limited | Other services | 2015 |
| Ananya Property Holding & Consultancy Services Ltd | Real estate | 2020 |
| Anarchy (Bolton) Limited | Arts & recreation | 2018 |
| Anas Al-Nouri for Trading Ltd | Wholesale & retail | 2026 |
| Anas Enterprising Ltd | Wholesale & retail | 2023 |
| Anas Gated Limited | Wholesale & retail | 2025 |
| Anas Pharma Ltd | Public administration | 2024 |
| Anasphere Limited | Transport & logistics | 2025 |
| Anasta Fashion Trade Ltd | Wholesale & retail | 2024 |
| Anatolia Grill Limited | Hospitality | 2024 |
| Anatolian Cuisine Handmade Ltd | Manufacturing | 2022 |
| Anatolian House Ltd | Hospitality | 2025 |
| Anatomy Chester Limited | Health & social care | 2015 |
| Anatomy MCR Limited | Health & social care | 2015 |
| Anaya AM Property Ltd | Households | 2025 |
| Anaya Eshaal Ltd | Transport & logistics | 2023 |
| Anaya Global Ltd | Transport & logistics | 2021 |
| Anbb Limited | Professional & scientific | 2024 |
| Anber Edit Media Ltd | Professional & scientific | 2026 |
| Anber Investments Limited | Real estate | 2008 |
| Anbia Limited | Wholesale & retail | 2025 |
| Anbuk Healthcare Limited | Health & social care | 2015 |
| ANCA20 Limited | Hospitality | 2024 |
| Anceo Ltd | Construction | 2020 |
| Ancer Computers Trading Ltd | Wholesale & retail | 2026 |
| Anchor & Accord Limited | Professional & scientific | 2025 |
| Anchor Brothers (Cleaners) Limited | Administrative & support | 1978 |
| Anchor Cloud Systems Ltd | Information & communication | 2025 |
| Anchor Education Ltd | Education | 2010 |
| Anchor for Investment Limited | Extraterritorial | 2026 |
| Anchor Traders Ltd | Transport & logistics | 2016 |
| ANCHOR4CARE Services Limited | Health & social care | 2022 |
| Anchora International Limited | Wholesale & retail | 2011 |
| Anchorage Gateway (CW) Limited | Real estate | 2019 |
| Anchorage Gateway (Finco) Limited | Financial services | 2021 |
| Anchorage Gateway (Holdco) Limited | Financial services | 2021 |
| Anchorage Gateway (Interco) Limited | Financial services | 2022 |
| Anchorage Gateway (Midco) Limited | Financial services | 2022 |
| Anchorbridge Developments Limited | Construction | 2020 |
| Anchorer Properties Ltd | Real estate | 2025 |
| Anchoroflovecare Ltd | Health & social care | 2025 |
| Anchorpoint Diagnostics Ltd | Health & social care | 2025 |
| Anchorsec Limited | Administrative & support | 2022 |
| Anchorstone Living Limited | Health & social care | 2025 |
| Anco AI Ltd | Information & communication | 2018 |
| Anco Estate Investments Ltd | Real estate | 2020 |
| Anco Holdings Limited | Real estate | 2024 |
| Anco Stays Ltd | Real estate | 2023 |
| Ancoats Car Sales Limited | Wholesale & retail | 2014 |
| Ancoats Christmas Trees Limited | Wholesale & retail | 2025 |
| Ancoats Convenience Ltd | Wholesale & retail | 2026 |
| Ancoats Development Company Limited | Financial services | 2006 |
| Ancoats Gardens Ltd | Construction | 2016 |
| Ancoats House Limited | Real estate | 2025 |
| Ancoats LAB Ltd | Information & communication | 2016 |
| Ancoats Mobile Accessories & Vapes Ltd | Wholesale & retail | 2018 |
| Ancoats Removals and Distribution Ltd | Transport & logistics | 2025 |
| Ancoats Street Hotel Ltd | Real estate | 2022 |
| Ancoats Takeaway Ltd | Hospitality | 2025 |
| Ancoats Vapes and Mobiles Ltd | Wholesale & retail | 2025 |
| Ancoats Ventures Ltd | Professional & scientific | 2025 |
| Ancoats Yacht Club Ltd | Information & communication | 2020 |