| Bastian Holdings Limited | Leicester | 2024 |
| Bastide Holdings Ltd | Windsor | 2023 |
| Bastiman Holdings Ltd | Driffield | 2024 |
| Bastinra Ventures Ltd | Milton Keynes | 2025 |
| Bastion Asset Management Ltd | London | 2021 |
| Bastion Financial Planning Limited | Colchester | 2015 |
| Bastion Fingroup Limited | London | 2018 |
| Bastion Holdings Limited | Sittingbourne | 2022 |
| Bastion Insurance Services Ltd | Oxford | 2013 |
| Bastion Property Group Ltd | Chipping Campden | 2011 |
| Bastion Risk Partners Ltd | London | 2022 |
| Bastione Developments Ltd | London | 2018 |
| Bastone Limited | Castleford | 2024 |
| Bastow & Co Limited | York | 2003 |
| Basudev Limited | Birmingham | 2023 |
| Basunia & Associates Investment Limited | London | 2009 |
| BAT Financial Solutions Ltd | Uxbridge | 2025 |
| BAT Happy Holdings Limited | London | 2026 |
| BAT Instrument Financial Limited | London | 2026 |
| Bata Capital Ltd | London | 2024 |
| Batalas Limited | Waterlooville | 1999 |
| Batavi Volantes Ltd | Milton Keynes | 2025 |
| Batavia and Vlieter Investments Ltd | London | 2026 |
| Batavia Capital Ltd | London | 2011 |
| Batavia Limited | London | 2011 |
| Batch 50 Ltd | Leicester | 2025 |
| Batch 92 Ltd | Poole | 2025 |
| Batchelor Holdings Ltd | Peterborough | 2025 |
| Batchelors Motor Holdings Limited | Ripon | 2012 |
| Batchfields Investments Limited | St. Albans | 2022 |
| Batcombe Mortgage Services Ltd | Castle Cary | 2020 |
| Batcombe Park Ltd | Bruton | 2025 |
| Bate Holdings Ltd | Wigan | 2016 |
| Bateau Bleu Retail Holdings Limited | Sevenoaks | 2024 |
| Bateel Medical UK Ltd | London | 2025 |
| Bateman & Marsh Holdings Limited | Halifax | 2010 |
| Bateman Asset Management Limited | Warwick | 2004 |
| Bateman Associates Ltd | Oxted | 2025 |
| Bateman Blooms Ltd | Petworth | 2021 |
| Bateman Cheddleton Limited | Leek | 2018 |
| Bateman Collins Group Limited | Southampton | 2021 |
| Bateman Family Holdings Limited | Leek | 2018 |
| Bateman Groundworks (Holdings) Limited | Norwich | 2019 |
| Bateman Groundworks Trustees Limited | Norwich | 2025 |
| Bateman Holdings Limited | Dudley | 2015 |
| Bateman Industries Limited | Stoke-On-Trent | 2021 |
| Bateman Jarvis Limited | St. Asaph | 2003 |
| Bateman of Stroud (Holdings) Limited | Glos | 1945 |
| Bateman Staffordshire Limited | Leek | 2023 |
| Bateman Trading Ltd | Halifax | 2024 |
| Bateman Wealth Management Limited | Liskeard | 1999 |
| Batemans Studio Ltd | London | 2021 |
| Baten Ltd | London | 2026 |
| Bates Family Investments Limited | Leeds | 2017 |
| Bates Finance Limited | Chelmsford | 1998 |
| Bates Financial Solutions Limited | Leicester | 2023 |
| Bates Hawkins Limited | Leicester | 2011 |
| Bates Independent Limited | Lightwater | 2005 |
| Bates Wealth Management Ltd | Wetherby | 2023 |
| Batesmillfield Financial Planning (SW) Limited | Plymouth | 2006 |
| Bateson Asset Management Limited | London | 2016 |
| Bateswilcox Mortgage Solutions Ltd | Newbury | 2019 |
| Batfo Limited | Magherafelt | 2026 |
| Bath & Henley Investments Ltd | Enfield | 2025 |
| Bath & West Mortgages Ltd | Frome | 2021 |
| Bath & West Wealth Management Ltd | Bath | 2020 |
| Bath and West Finance 1 Limited | Bristol | 2019 |
| Bath and West Finance 2 Limited | Bristol | 2019 |
| Bath and West Finance 3 Limited | Bristol | 2019 |
| Bath and West Finance 4 Limited | Bristol | 2023 |
| Bath and West Finance 5 Limited | Bristol | 2023 |
| Bath and West Finance 6 Limited | Bristol | 2024 |
| Bath and West Finance 7 Limited | Bristol | 2019 |
| Bath and West Finance 8 Limited | Bristol | 2022 |
| Bath and West Finance 9 Limited | Bristol | 2021 |
| Bath and West Finance Limited | Bristol | 2011 |
| Bath and West Holdings Limited | Bristol | 2026 |
| Bath Demolition Holdings Ltd | Bristol | 2020 |
| Bath Financial Planning Limited | Bradford-On-Avon | 2016 |
| Bath Giant Holdings Limited | Glasgow | 2023 |
| Bath Hotel and Spa Limited | Bath | 2004 |
| Bath Island Trading Ltd | Guildford | 2024 |
| Bath Mortgage Search Limited | Bath | 2003 |
| Bath Road Bridge Ltd | London | 2025 |
| Bath Scaffolding Limited | Bristol | 1988 |
| Bath Stone Group Limited | Chipping Norton | 2017 |
| Batherton Holdings Ltd | Nantwich | 2026 |
| Bathford Investments Limited | Colchester | 2024 |
| Bathia Properties Limited | London | 2025 |
| Bathla Family Investment Company | London | 2015 |
| Bathroom Brands Group Limited | Dartford | 2016 |
| Bathroom Brands Limited | Dartford | 2017 |
| Bathroom Planet Holdings Ltd | Hawick | 2021 |
| Bathroom Retail Group Limited | Brentford | 2012 |
| Bathroomsbydesign Group Ltd | Brentford | 2018 |
| Bathwick Summit Capital Ltd | Mildenhall | 2025 |
| BATI1819 Ltd | Edinburgh | 2024 |
| Batian Property Group Ltd | Gateshead | 2021 |
| Batif Dollar Limited | London | 1923 |
| Batisseurs DE L Ouest Ltd | London | 2026 |