| Antares Capital London Limited | Altrincham | 2023 |
| Antares Global Holdings Limited | London | 2015 |
| Antares Global Management Limited | London | 1992 |
| Antares Insurance Company Limited | London | 2021 |
| Antares International Limited | London | 1999 |
| Antares Investments Limited | Edinburgh | 2021 |
| Antares Managing Agency Limited | London | 2008 |
| Antares Securitys Ltd | Liverpool | 2026 |
| Antares TMT Ltd | London | 2013 |
| Antares Underwriting Limited | London | 2007 |
| Antarez Limited | London | 2020 |
| Antbon Holdings Limited | Redditch | 2022 |
| Antclaire Limited | Walsall | 2015 |
| Antcliff Holdings Ltd | Holmfirth | 2025 |
| Antcliff Mortgages & Protection Ltd | Chesterfield | 2016 |
| Antdav Investments London Limited | Winchester | 2022 |
| Antea Group UK Holding Limited | Norwich | 2023 |
| Anteel Group Limited | Glasgow | 2012 |
| Antelj Management Ltd | Isleworth | 2016 |
| Antell Insurance Associates Limited | Leeds | 2001 |
| Antelope Asset Management Ltd | Sandown | 2025 |
| Antelope Loans Funding Limited | London | 2021 |
| Antelope Partners Limited | Cheltenham | 2021 |
| Antelope Underwriting Limited | London | 1997 |
| Antenore Holdco Limited | London | 2023 |
| Antenore Partners Ltd | London | 2025 |
| Antenore Topco Limited | London | 2022 |
| Anterior Holdings Ltd | Altrincham | 2024 |
| Antermony | Guildford | 2015 |
| Anteros Capital Limited | Cirencester | 2014 |
| Anterra Limited | London | 2012 |
| Antevorta Financial Training Limited | London | 2016 |
| Anteyco Group Ltd | London | 2024 |
| Antgriff Limited | Newark | 2023 |
| Anthea Holdings Ltd | London | 2020 |
| Anthelion Developments Limited | London Colney | 2025 |
| Anthem Corporate Finance Limited | London | 1998 |
| Anthem Publishing Holdings Limited | Bath | 2024 |
| Anthemis Asset Management Limited | London | 2022 |
| Anthemis BM SPV GP Limited | London | 2021 |
| Anthemis CB SPV GP Limited | London | 2021 |
| Anthemis GP Member Limited | London | 2015 |
| Anthemis NM SPV GP Limited | London | 2021 |
| Anthemis TL GP Limited | London | 2020 |
| Anthemis YL SPV GP Ltd | London | 2021 |
| Anthesis Bidco Limited | London | 2023 |
| Anthesis Debtco Limited | London | 2023 |
| Anthesis Global Limited | London | 2020 |
| Anthesis Holdco Limited | London | 2023 |
| Anthesis Midco Limited | London | 2023 |
| Anthesis Topco Limited | London | 2023 |
| Anthill Limited | | 1992 |
| Antholin Commodities Limited | Edgware | 2025 |
| Antholin Group Holdings Limited | Edgware | 2025 |
| Anthology Hoxton Holdings Limited | Gloucestershire | 2019 |
| Anthoney Mortgage Solutions Ltd | Inverness | 2024 |
| Anthony & Co Asset Management Ltd | Bedford | 2016 |
| Anthony a Davies Holdings Limited | Newport | 2024 |
| Anthony Birch Health & Safety Services Ltd | Capel | 2020 |
| Anthony Branfield Limited | Taunton | 2023 |
| Anthony Calleja Financial Solutions Limited | Weymouth | 2026 |
| Anthony Castrey Limited | Stoke-On-Trent | 2012 |
| Anthony Church Limited | London | 2013 |
| Anthony Connelly Tax Consultancy Limited | Cardiff | 2015 |
| Anthony D Evans (Insurance Brokers) & Co Ltd | Coventry | 2015 |
| Anthony David & Co Holdings Limited | Bournemouth | 2025 |
| Anthony Family Investment Limited | Plymouth | 2025 |
| Anthony Finance Limited | Winchester | 2013 |
| Anthony Francis Group Holdings Limited | Warrington | 2021 |
| Anthony Gibbons Investments Ltd | Newport | 2021 |
| Anthony Greenhalgh Limited | Manchester | 2010 |
| Anthony Groves Holdings Limited | Weybridge | 2018 |
| Anthony Hunt Consultancy Limited | Norwich | 2022 |
| Anthony James Insurance Brokers Limited | Loughborough | 2009 |
| Anthony James Properties Holdings Ltd | Southampton | 2022 |
| Anthony John Wilmott Holdings Limited | Stafford | 2020 |
| Anthony Jones (U.K.) Limited | Dartford | 1984 |
| Anthony LAM Limited | Kensington | 2021 |
| Anthony Marlon Group Ltd | London | 2023 |
| Anthony Marshall Holdings Limited | Bury | 2019 |
| Anthony Marsland Limited | Chalfont St. Giles | 2007 |
| Anthony Nash Financial Advice Ltd | Harrow | 2026 |
| Anthony Oakden & Sons Limited | Hertford | 2023 |
| Anthony Property Co. Limited | Radlett | 1990 |
| Anthony Richards Limited | St Helens | 2007 |
| Anthony Russel Group Limited | Braintree | 2023 |
| Anthony Somefun Limited | London | 2004 |
| Anthony Summerfield Limited | Mansfield | 2015 |
| Anthony Trueman and Co Limited | Tavistock | 2006 |
| Anthony Wakefield and Company Limited | Dorking | 1983 |
| Anthony Ward Thomas Installations Ltd | London | 2026 |
| Anthony Welch Holdings Ltd | Evesham | 2024 |
| Anthousai Limited | Ilkley | 2024 |
| Anthracite Holdings Ltd | Reading | 2017 |
| Anthracites Properties Limited | Pulborough | 2024 |
| Anti Fragility Investment Research Limited | Hayes | 2024 |
| Anti.Prophet Inc Ltd | London | 2025 |
| Anticg I GP Limited | St. Albans | 2021 |
| Antico Holdings Ltd | Bury St. Edmunds | 2025 |
| Anticorp Ltd | London | 2023 |