| Anguilla Station Limited | Corsham | 2024 |
| Anguillara Holdings Ltd | London | 2024 |
| Angular Capital Limited | London | 2013 |
| Angular Group Limited | London | 2023 |
| Angular UK Opco Ltd | London | 2015 |
| Angus Egress Ltd | Poole | 2023 |
| Angus Energy Weald Basin NO.1 Limited | Edinburgh | 2012 |
| Angus Holdings Safety Group Limited | Near Lancaster | 2013 |
| Angus Hotel Resort Limited | London | 2024 |
| Angus International Safety Group Limited | Near Lancaster | 2013 |
| Angus Investments and Resources Limited | Aberdeen | 2022 |
| Angus M Watson Ltd. | Montrose | 2008 |
| Angus Morton Butchers (Richmond) Limited | Northallerton | 2024 |
| Angus Project Finance Services Limited | Leatherhead | 2012 |
| ANH Assets Ltd | London | 2022 |
| ANH Group Ltd | Exeter | 2020 |
| ANI M Holdings Ltd | Suffolk | 2024 |
| Ania Holdings Ltd | Birmingham | 2025 |
| Anian Capital Limited | Mountain Ash | 2025 |
| Anian Holdings Limited | Mountain Ash | 2025 |
| Anian Investments Limited | Mountain Ash | 2025 |
| Anicetus Performance Ltd | Horsham | 2021 |
| Anick Holdings Limited | Preston | 2019 |
| Anico Financial Services Limited | London | 2010 |
| Anico Ventures Limited | Harlow | 2021 |
| Anidea Business Finance Ltd | Cheltenham | 2024 |
| Anikah International Holdings Ltd | Hythe | 2021 |
| Aniksthetics Medical & Investments Ltd | Epsom | 2026 |
| Anil J Ventures Ltd | Altrincham | 2021 |
| Anil LAL & Co Limited | Edinburgh | 2011 |
| Anima Bidco Limited | London | 2024 |
| Anima Holdco Limited | London | 2024 |
| Anima Midco Limited | London | 2024 |
| Anima Topco Limited | London | 2024 |
| Animal Friends Insurance Services Limited | Amesbury | 1998 |
| Animal Friends Investments Limited | London | 2016 |
| Animal Health Angels Limited | Peterborough | 2023 |
| Animal House Holdings Ltd | Gloucestershire | 2018 |
| Animal Rescue Funding Ltd | Gateshead | 2019 |
| Animalcare Group PLC | York | 1972 |
| Animaux Logistics UK Limited | Sittingbourne | 2017 |
| Animmersion Holding Co Ltd | Stockton On Tees | 2021 |
| Animo Business Finance Limited | London | 2024 |
| Animo Management Limited | Wickford | 2003 |
| Animo Ventures Limited | Inverness | 2022 |
| Animositas Limited | Shrewsbury | 2018 |
| Animus Holdings Limited | Swanley | 2026 |
| Anips Investments Ltd | Walthamstow | 2018 |
| Aniram Holdings Ltd | London | 2025 |
| Anires Financial Ltd | London | 2021 |
| Anireta Ltd | London | 2017 |
| Anis & Aina Limited | London | 2019 |
| Anis and Family Ltd | Doncaster | 2023 |
| Anis Morgan Fathallah Ltd | Ruislip, | 2025 |
| Anish International Ltd | Greenford | 2025 |
| Anish Sharma Wealth Management Limited | Kent | 1984 |
| Anisha Underwriting Limited | Grantham | 2009 |
| Anisky Limited | Eastbourne | 2024 |
| Anison Ltd | Glasgow | 2007 |
| Anist Limited | London | 2019 |
| Anita and Richard for Generations Ltd | Rochdale | 2025 |
| Anita M Brown Ltd | Sevenoaks | 2025 |
| Anita Venetian Trading Corporation Ltd | London | 2018 |
| Anivacor Capital Ltd | London | 2020 |
| Anivora Holdings Ltd | Manchester | 2024 |
| ANJ Advisors Ltd | St. Leonards-On-Sea | 2025 |
| ANJ RAJ Limited | Harrow | 2020 |
| Anjana Overseas Limited | Watford | 2022 |
| Anjazo Management Limited | Writtle | 2009 |
| Anje Properties (Holdings) Limited | Bedford | 2024 |
| Anjeli Investments Limited | Farnham | 2016 |
| Anjin Advisers Limited | Worthing | 2023 |
| Anjna Enterprise Limited | Bradford | 2004 |
| Anjoca Farms Ltd | London | 2018 |
| Anjola | Leeds | 2018 |
| Anjou Holdings UK Ltd | London | 2021 |
| Anjul & Co. Holdings Ltd | Hove | 2025 |
| Anjum Holdings Ltd | Dudley | 2019 |
| Anjuma Limited | Watford | 2018 |
| Anjuna Group Limited | Bury St. Edmunds | 2025 |
| Anka Broker Ltd | London | 2023 |
| Anka Metal Coatings (Holdings) Limited | Waterlooville | 2015 |
| Anka Wealth Limited | London | 2022 |
| Ankaa Partners Ltd | Cardiff | 2018 |
| Ankalp Limited | Greenford | 2026 |
| Ankara Hukuk Ltd | Lincolnshire | 2025 |
| Ankaris Ltd | London | 2025 |
| Anker Invest Limited | London | 2009 |
| Ankh Paris Limited | London | 2024 |
| Ankhil Group Holdings Limited | Manchester | 2021 |
| Ankor Capital Limited | London | 2025 |
| Ankor Holdings Limited | London | 2025 |
| Ankuk Limited | North Harrow | 2021 |
| Ankur Holding Limited | South Darenth | 2011 |
| Ankurit Limited | Aylesbury | 2017 |
| ANL Investments (NI) Ltd | Belfast | 2021 |
| Anlaby Holdings Ltd | Ilkley | 2024 |
| Anld Crypto Holdings Ltd | Maltby | 2025 |
| Anlev (UK) Holdings Limited | Basildon | 2021 |
| Anlore Limited | Gloucester | 2019 |