| Bambi Fitness Ltd | Manchester | 2025 |
| Bambi Media Ltd | London | 2026 |
| Bambian Bookings Ltd | London | 2024 |
| Bambina & Beyond Ltd | Ebbw Vale | 2025 |
| Bambino Events Ltd | Southend-On-Sea | 2022 |
| Bambinos Play Village Ltd | Thornton-Cleveleys | 2025 |
| Bambipokepulls Limited | Coleford | 2025 |
| Bamboo Arts Ltd | London | 2017 |
| Bamboo Bicycle Club London Limited | Leyton | 2017 |
| Bamboo Engineering Limited | Newcastle Upon Tyne | 2009 |
| Bamboo Leisure Ltd | London | 2021 |
| Bamboo Mcbaddy Ltd | London | 2020 |
| Bamboo Music Management Limited | Harlow | 2014 |
| Bamboo Radical Limited | Swansea | 2017 |
| Bamboo Tamboo Ltd | Otley | 2011 |
| BAMBOO42 Ltd | Farnborough | 2024 |
| Bamboozle Theatre Company Limited | Leicester | 2010 |
| Bamboozles Adventure World Limited | Darlington | 2009 |
| Bamburgh Castle Viewing Limited | Leeds | 2011 |
| Bambury Art Ltd | Lydney | 2023 |
| Bamford Trading Limited | Preston | 2013 |
| Bammc (1906) Ltd | Liverpool | 2025 |
| Bamonte Artist Management Ltd | Doncaster | 2005 |
| Bampton Archive Trading Limited | Bampton | 2014 |
| Bampton Classical Opera | Bampton | 1999 |
| Bamrad Limited | St. Neots | 2020 |
| Banaats Events Ltd | London | 2025 |
| Banana Bear Ltd | Ashford | 2013 |
| Banana Cabaret Limited | Worthing | 1998 |
| Banana Comedy Ltd | Worthing | 2013 |
| Banana Dance Limited | | 1999 |
| Banana Media Ltd. | Christchurch | 1998 |
| Banana Split Productions Limited | London | 1994 |
| Banana Split Records Ltd | Windsor | 2019 |
| Banana Studio AI Ltd | London | 2025 |
| Banana Studios Limited | Beaconsfield | 2014 |
| Bananas Group Limited | Birkenhead | 2015 |
| Banbridge Angling Club | Banbridge | 1999 |
| Banbridge Old Vehicle Club Limited | Craigavon | 1988 |
| Banbury Cross Sailing Club Ltd | London | 2024 |
| Banbury Gliding Club Limited | Brackley | 1979 |
| Banbury Martial Arts Centre Ltd | Banbury | 2019 |
| Banbury Rugby Club Limited | Banbury | 2021 |
| Banbury Steam Society | Woodford Halse | 1997 |
| Banc D'Arguin, and Coastal and Marine Biodiversity Trust Fund Limited | Oxford | 2009 |
| Bancroft Boutique Talent Ltd | South Croydon | 2019 |
| Bancroft's Enterprises Ltd. | Woodford Green | 2002 |
| Bancyfelin Motor Club | Carmarthen | 2011 |
| Band AID Trading Limited | Kingston Upon Thames | 2004 |
| Band Factory Ltd | Chesterfield | 2011 |
| Band of Gold Productions Limited | Harrow | 2019 |
| Band of Sisters Theatre Ltd | London | 2025 |
| Band Theft Audio Ltd. | Witham | 2018 |
| Band Theme Limited | London | 2020 |
| Band UP Limited | Romford | 2024 |
| BAND86 Ltd | Oldham | 2025 |
| Bandability Limited | Haywards Heath | 2012 |
| Bandai Namco Amusement Europe Limited | Richmond | 1993 |
| Bandeja Festival Ltd | London | 2025 |
| Bandeja Padel Club Ltd | Bradford | 2026 |
| Bandel Studio Ltd | London | 2025 |
| Bandeoke Scotland Ltd | Glasgow | 2025 |
| Bandersnatch Ltd | Henley-On-Thames | 2019 |
| Bandhan Event Services Ltd | Leicester | 2024 |
| Bandhan Weddings & Events Ltd | Leicester | 2018 |
| Bandit Studio Ltd | Malmesbury | 2008 |
| Bandit Ventures Limited | Dudley | 2012 |
| Bandjamm CIC | London | 2020 |
| Bandland Records Ltd | Chessington | 2008 |
| Bandlink Limited | Leeds | 1992 |
| Bandmodel Limited | Herts | 1992 |
| Bando Chwedl CIC | Peacehaven | 2024 |
| Bands for Hire Limited | Stamford | 2012 |
| Bandshop Ltd | West Malling | 2021 |
| Bandstand Outdoor Entertainment Ltd. | London | 2023 |
| Bandwagon Productions Ltd | Tadworth | 2011 |
| Bandy Rugby Ltd | Newport | 2014 |
| Banes Padel (Holdings) Limited | Brentwood | 2026 |
| Banes Padel Limited | Brentwood | 2026 |
| Banfield Acquisitions Limited | Beckenham | 2022 |
| Bang Bang Boxing Club C.I.C. | Crediton | 2023 |
| Bang Bang Boxing Ltd | Crediton | 2023 |
| Bang Bang Romeo Ltd | Birmingham | 2019 |
| Bang Creations Limited | Haslemere | 2002 |
| Bang Edutainment Limited | London | 2000 |
| Bang Face Limited | Hertford | 2007 |
| Bang Fitness & Performance Ltd | Brentford | 2021 |
| Bang on the Door Limited | Londonderry | 2000 |
| Bang the Party Productions Ltd | Cranbrook | 2018 |
| Bangash Polo Team Ltd | Southsea | 2024 |
| Bangbangprize Ltd | Greenock | 2024 |
| Bangers & Nash Limited | London | 2015 |
| Banging Boards Limited | London | 2025 |
| Bangla Bantams Ltd | Bradford | 2023 |
| Bangla Beats Limited | Oldham | 2020 |
| Bangla Craze Ltd | London | 2022 |
| Bangladeshis in Kent | London | 2022 |
| Bango Productions Limited | London | 2022 |
| Bangor City Football Club Limited | Bangor | 2025 |
| Bangor Drama Club Ltd | Bangor | 2015 |