| Amir Khadija Ltd | Hospitality | 2019 |
| Amju Property Improvments Ltd | Construction | 2025 |
| AMK Property Developments Ltd | Real estate | 2021 |
| Amk.Stores Ltd | Wholesale & retail | 2026 |
| Amouramoments Limited | Other services | 2025 |
| Amplo Capital Limited | Financial services | 2021 |
| Ampofo Construction Group Limited | Construction | 2021 |
| Amrose Properties Limited | Real estate | 2015 |
| AMS Acquisitions Ltd | Real estate | 2019 |
| Amschel Holdings Ltd | Real estate | 2025 |
| Amulree Management Ltd | Real estate | 2007 |
| Amulya Navar Solutions Ltd | Information & communication | 2025 |
| AMY Bell Compliance Limited | Professional & scientific | 2017 |
| AMY RD Ltd | Real estate | 2021 |
| AN Global Ltd | Wholesale & retail | 2026 |
| Anafa Estates Limited | Other services | 2024 |
| Anafa Holdings Limited | Other services | 2024 |
| Anas Khan Ltd | Wholesale & retail | 2025 |
| Anasdeo Ltd | Information & communication | 2026 |
| Anatilman Ltd | Construction | 2025 |
| Ana’S Flavor LAB Ltd | Information & communication | 2026 |
| Anbar Knightsbridge Limited | Hospitality | 2025 |
| Anchorage Chambers Limited | Financial services | 2014 |
| Ancl Consultancy Ltd | Professional & scientific | 2024 |
| Andaazsingh Ltd | Construction | 2025 |
| Andalus Media Ltd | Professional & scientific | 2022 |
| Anderseed Consulting Ltd | Information & communication | 2025 |
| Anderselite Corporate Trustee Ltd | Professional & scientific | 2016 |
| Anderselite Holdings Ltd | Financial services | 2016 |
| Anderselite Ltd | Administrative & support | 1966 |
| Andertons Chippy Limited | Hospitality | 2023 |
| Andre Mendes Locum Ltd | Professional & scientific | 2026 |
| Andrew Tonge Consultancy Limited | Professional & scientific | 2022 |
| Andy Williams (Builders) Ltd. | Real estate | 1997 |
| Anett Seresne Tech Horizon Ltd | Wholesale & retail | 2025 |
| Ange Dechu Limited | Other services | 2012 |
| Angel Management Software Ltd | Information & communication | 2026 |
| Angel Meadow School Ltd | Education | 2025 |
| Angel Sandwich Bar Ltd | Hospitality | 2026 |
| Angel Shop Ltd | Wholesale & retail | 2015 |
| Anglo Business Ltd | Wholesale & retail | 2022 |
| Anica Viduove Ltd | Wholesale & retail | 2025 |
| Anike Ologe Global Empire Ltd | Wholesale & retail | 2026 |
| Anilox Blast Cleaning Limited | Water & waste | 2004 |
| Aniyei Ircho Ltd | Real estate | 2021 |
| ANJ Lettings Ltd | Real estate | 2021 |
| Anjo Foods Ltd | Hospitality | 2026 |
| Anka Accountants Ltd | Professional & scientific | 2023 |
| Anka Property Ltd | Real estate | 2020 |
| Anna's Bakery Limited | Hospitality | 2024 |
| Annameta Ltd | Hospitality | 2023 |
| Annedazzle Limited | Real estate | 2013 |
| Anniesland Building and Roofing Ltd | Construction | 2025 |
| Ansh Limited | Health & social care | 2023 |
| ANT Media Productions Limited | Information & communication | 2014 |
| Antep Restaurant & Cafe Ltd | Hospitality | 2022 |
| Anthony James Typography Ltd | Administrative & support | 2015 |
| Anthony Sacks Limited | Professional & scientific | 2015 |
| Anthos Digital Ltd | Professional & scientific | 2024 |
| Anthracite Motors Ltd | Wholesale & retail | 2023 |
| Anthropolo Ltd | Information & communication | 2026 |
| Antony Mason Decorators Limited | Construction | 2005 |
| ANU Living Spaces Limited | Hospitality | 2026 |
| Anvil Contracting Ltd | Construction | 2020 |
| Anwick Lane Estate Company Limited | Other services | 2020 |
| ANX Heating Ltd | Construction | 2021 |
| ANY JOB Done Autos Ltd | Wholesale & retail | 2024 |
| ANY Place Travel Limited | Transport & logistics | 2018 |
| ANZ Global Soft Ltd | Wholesale & retail | 2015 |
| Aode Limited | Construction | 2025 |
| Aoia Properties Ltd | Real estate | 2025 |
| AOL Security Systems Ltd | Wholesale & retail | 2022 |
| Aomori UK Ltd | Hospitality | 2024 |
| Aota Cleaning Solutions Ltd | Administrative & support | 2025 |
| Aouz Limited | Wholesale & retail | 2022 |
| AP BEE Building Limited | Construction | 2026 |
| Apace Footwear Ltd | Wholesale & retail | 2025 |
| Apadmi Group Limited | Financial services | 2012 |
| Apadmi Limited | Information & communication | 2007 |
| Aperture Images Ltd | Other services | 2014 |
| Apex Computing Services Limited | Information & communication | 2003 |
| Apex Rooms Salford Ltd | Hospitality | 2026 |
| Apex Services Manchester Ltd | Hospitality | 2025 |
| Apex SPV1 Ltd | Real estate | 2026 |
| Apex SPV2 Ltd | Real estate | 2026 |
| Apex SPV3 Ltd | Real estate | 2026 |
| Apex SPV4 Ltd | Real estate | 2026 |
| Apex Stocks Ltd | Wholesale & retail | 2025 |
| Apex Student Advisors Ltd | Education | 2026 |
| Apex Technology (UK) Limited | Wholesale & retail | 2013 |
| Apex Traders Group Ltd | Wholesale & retail | 2026 |
| Apexform Ltd | Professional & scientific | 2026 |
| Apiezon Products Limited | Extraterritorial | 1933 |
| APJ Building Ltd | Construction | 2022 |
| APM Property Rentals Ltd | Households | 2024 |
| App Investments Ltd | Wholesale & retail | 2017 |
| App Web DEV Limited | Information & communication | 2016 |
| APP2VOX Ltd | Information & communication | 2013 |
| Appeak Solutions Ltd | Construction | 2024 |
| Appelle Ltd | Financial services | 2025 |