| AML IT Ltd | Information & communication | 2016 |
| AML Plumbing and Heating Ltd | Construction | 2015 |
| AML UK Investments Limited | Real estate | 2025 |
| Amma Kitchen Ltd | Hospitality | 2024 |
| Amma's Traditional Foods Ltd | Manufacturing | 2024 |
| Amman Cctv Security System Ltd | Construction | 2024 |
| Amman Driving School Ltd | Education | 2026 |
| Amman Foods Ltd | Wholesale & retail | 2018 |
| Amman Transport Ltd | Manufacturing | 2024 |
| Ammz Catering Services Limited | Hospitality | 2017 |
| AMN Delivery Ltd | Transport & logistics | 2025 |
| AMN Family Ltd | Manufacturing | 2025 |
| AMN Transport Ltd | Transport & logistics | 2018 |
| AMO Plumbing & Heating Ltd | Construction | 2020 |
| Amob Machinery Limited | Wholesale & retail | 2017 |
| Amoira Ltd | Professional & scientific | 2025 |
| Amoory Ltd | Wholesale & retail | 2023 |
| Amore Naples Pizza Ltd | Hospitality | 2026 |
| Amore Venetian Interiors Limited | Real estate | 2021 |
| Amour of GOD Ltd | Wholesale & retail | 2024 |
| AMP Drivers Ltd | Transport & logistics | 2022 |
| AMP Supplies Ltd | Wholesale & retail | 2022 |
| Ampco Metal Limited | Mining & quarrying | 1970 |
| Amped UP Music Academy Ltd | Administrative & support | 2024 |
| Ampersand EPM Limited | Manufacturing | 2012 |
| Ampformatics Ltd. | Information & communication | 2012 |
| Amphion Consulting Limited | Information & communication | 2011 |
| Amplifi Limited | Information & communication | 2025 |
| Amplify Business Consulting Limited | Professional & scientific | 2025 |
| Amplify International Limited | Administrative & support | 2023 |
| AMPLIFYMEDIA360 Ltd | Wholesale & retail | 2025 |
| Amplifyouth Ltd | Education | 2018 |
| AMR Development Limited | Other services | 2023 |
| AMR Duncombe Ltd | Financial services | 2026 |
| Amred Healthcare Limited | Health & social care | 2011 |
| Amria Properties Ltd | Real estate | 2025 |
| Amrit Shokar Transport Limited | Transport & logistics | 2025 |
| Amritbani 1313 Ltd | Transport & logistics | 2025 |
| Amro Consulting Ltd | Information & communication | 2010 |
| AMS Bespoke Surface Design Limited | Construction | 2022 |
| AMS Consultant Services Limited | Information & communication | 2026 |
| AMS Project Services Limited | Information & communication | 2025 |
| AMS Trans Ltd | Transport & logistics | 2021 |
| Amsasara Limited | Professional & scientific | 2017 |
| Amshar Ltd | Real estate | 2017 |
| Amsky Ltd | Transport & logistics | 2016 |
| Amsterdam Conenience Store Ltd | Other services | 2023 |
| Amtico Holdings Limited | Manufacturing | 1995 |
| Amulet Associates Ltd | Real estate | 2012 |
| Amura IT Services Ltd | Information & communication | 2024 |
| Amwali Group Limited | Real estate | 2025 |
| AMY Moon Ltd | Administrative & support | 2020 |
| AMY Sweet Psychology Ltd | Education | 2017 |
| AMY16 Transport Ltd | Transport & logistics | 2025 |
| Amyblok Limited | Professional & scientific | 2023 |
| Amyravansales Ltd | Wholesale & retail | 2025 |
| AMZ City Builders Ltd | Construction | 2024 |
| AMZ28 Ltd | Wholesale & retail | 2025 |
| AN Convenience Stores Ltd | Wholesale & retail | 2023 |
| AN Engineering Production Ltd | Information & communication | 2025 |
| AN Food&Wine Ltd | Hospitality | 2025 |
| AN LE JU Limited | Real estate | 2018 |
| AN Supported Carer Ltd | Health & social care | 2024 |
| ANA Khana Pina Limited | Real estate | 2007 |
| ANA Online Ltd | Wholesale & retail | 2025 |
| ANA Ventures Ltd | Hospitality | 2025 |
| Ana-Maria Trans Ltd | Transport & logistics | 2026 |
| Anaaya Ltd | Wholesale & retail | 2019 |
| Anabranch Plus Ltd | Education | 2024 |
| Anagulea Ltd | Transport & logistics | 2024 |
| Anais Dinu Ltd | Construction | 2016 |
| Anakar Ltd | Professional & scientific | 2022 |
| Analen Trans Limited | Construction | 2024 |
| Analysis & Intelligence Solutions Limited | Information & communication | 2006 |
| Analysis Design Productivity Limited | Information & communication | 2002 |
| Anamasifsalaar Limited | Wholesale & retail | 2026 |
| Anamveer Properties Limited | Real estate | 2024 |
| Anant Productions Ltd | Information & communication | 2026 |
| Anantaa Private Ltd | Extraterritorial | 2024 |
| Ananth Ltd | Wholesale & retail | 2024 |
| Anantha Limited | Hospitality | 2020 |
| Ananya Retail Ltd | Wholesale & retail | 2019 |
| Anaphiri Limited | Real estate | 2020 |
| Anarchy Protection Services Ltd | Administrative & support | 2017 |
| Anasia Ltd | Other services | 2026 |
| Anastasia Transport Limited | Transport & logistics | 2014 |
| Anava Group Consultancy Ltd | Professional & scientific | 2025 |
| Anava Group Consultants Limited | Professional & scientific | 2025 |
| Anaya Housing Ltd | Real estate | 2026 |
| Anaya Ltd | Real estate | 2017 |
| Anays 20 Transport Ltd | Transport & logistics | 2023 |
| Anca (U.K.) Limited | Manufacturing | 1986 |
| Anca's Food Ltd | Hospitality | 2024 |
| Anchor Care Services Ltd | Public administration | 2023 |
| Anchor Inserts Limited | Manufacturing | 2005 |
| Anchor Living Limited | Households | 2025 |
| Anchor Oasis Ltd | Real estate | 2025 |
| Anchor Pathways Limited | Real estate | 2025 |
| Anchor Point Healthcare Services Ltd | Health & social care | 2026 |
| Anchor Transport UK Ltd | Transport & logistics | 2024 |