| Bossy LDN Ltd | Harrow | 2017 |
| Bostal Limited | Hove | 2025 |
| Bostan Boxing Limited | Rotherham | 2025 |
| Boste Fitness Ltd | Tunbridge Wells | 2021 |
| Bostin Productions Ltd | Birmingham | 2012 |
| Bostin' Creative Arts & Theatre C.I.C. | Walsall | 2018 |
| Bostin' Ride Limited | Brewood | 2015 |
| Boston Bowl Limited | Lincs | 1993 |
| Boston Bowl Racing Ltd | Boston | 2022 |
| Boston Bowling Club Limited(The) | Lincs | 1923 |
| Boston Golf Club Limited | Boston | 1962 |
| Boston Golf TEE Company Limited(The) | Wokingham | 1987 |
| Boston Indoor Bowling Limited | Lincs | 1983 |
| Boston Phoenix Football Club Limited | Boston | 1988 |
| Boston Rowing Club Ltd | Boston | 2008 |
| Boston Sinfonia Ltd | Bathley | 2017 |
| Boston United Football Club Community Foundation | North Lincolnshire | 2007 |
| Boston United Football Club Limited | Lincolnshire | 1935 |
| Boston West END Bowling Club Limited | Lincolnshire | 1947 |
| Bosty Fields Ltd | Walsall | 2020 |
| Bosty Woods Ltd | Walsall | 2005 |
| Bosvena Events, Arts and Theatre CIC | Bodmin | 2024 |
| Boswell Sculpture & Castings Limited | Honiton | 2014 |
| BOT Events Ltd | Stroud | 2025 |
| BOT Music Ltd | St. Albans | 2019 |
| Botanic Leisure Limited | Londonderry | 2009 |
| Botanic Project & Maintenance (UK) Ltd | Newbury | 2023 |
| Botanic Sidings Limited | East Yorkshire | 1999 |
| Botanical Brothers Ltd | Warwick | 2021 |
| Botanical Gardens Enterprises | Rhyl | 2012 |
| Botanical Seasons Ltd | Isleworth | 2018 |
| Botanical Values Limited | Yeovil | 2025 |
| Botany Bay Farm & Stables Limited | Swadlingcote | 2008 |
| Both Feet Acting CIC | Corwen | 2023 |
| Both Sides Ltd | Sidcup | 2014 |
| Both/And Productions Limited | Bromsgrove | 2019 |
| Botis Seva / FAR From the Norm Ltd | West Molesey | 2019 |
| Botlife Ltd. | London | 2018 |
| Botsphere Limited | London | 2005 |
| Botterley Hill Farm Estates Limited | Nantwich | 2023 |
| Bottesford Community Sports Club Ltd | Nottingham | 2014 |
| Bottesford Football Club Limited | Nottingham | 2020 |
| Bottle Rockets Ltd | Glasgow | 2025 |
| Bottom Line Lifestyle and Fitness Limited | Nottingham | 2013 |
| Bottomwood Shoot Limited | Spalding | 2021 |
| Boudica Creations Limited | Brighton | 2015 |
| Boudica Group Ltd | London | 2023 |
| Boudica Project CIC | Nuneaton | 2026 |
| Boudica Records Ltd | London | 2026 |
| Bouffant Betty Limited | Spalding | 2016 |
| Boughen Industries Limited | London | 2023 |
| Boughey Gardens Tennis Club Limited | Newport | 2025 |
| Boughrood Harness Racing | Brecon | 2005 |
| Boughton Hall Cricket Club Limited(The) | | 1925 |
| Boughton Lodge Water Sports Club Limited | Littlehampton | 1987 |
| Boughton Members Club Limited | Boughton | 2007 |
| Boughton Park Limited | Worcester | 2019 |
| Bougie Drag Events Ltd | London | 2025 |
| Boujee Backdrops Ltd | Southampton | 2023 |
| Boujee Events Ltd | Wrexham | 2024 |
| Bould Climbing Limited | Northwich | 2025 |
| Boulder Central Ltd | West Bromwich | 2011 |
| Boulder Fitness Limited | Bury St. Edmunds | 2023 |
| Boulder HUT Limited | Ellesmere Port | 2016 |
| Boulder One Ltd | Weedon | 2017 |
| Boulder RYN Ltd | Penryn | 2025 |
| Boulder World Limited | Belfast | 2013 |
| Boulders Ltd | Pengam Road | 2007 |
| Boulders Site 2 Limited | Cheltenham | 2019 |
| Boulders Site 3 Ltd | Swansea | 2022 |
| Bouldover Climbing Centre C.I.C. | Dumfries | 2019 |
| Boule Evolution Ltd | London | 2023 |
| Boulebar UK Ltd | London | 2022 |
| Boulevard Leisure Ltd | Leigh-On-Sea | 2026 |
| Boulevard Media Limited | Newcastle Upon Tyne | 1994 |
| Boulevard Music Ltd. | Hope Valley | 2014 |
| Bounce & Bosh Ltd | Nuneaton | 2024 |
| Bounce & Jump Ltd | Newry | 2010 |
| Bounce & Tings Ltd | London | 2026 |
| Bounce a Mania Limited | Barnard Castle | 2019 |
| Bounce About Inflatables Ltd | Tilbury | 2020 |
| Bounce Alot Northwest Ltd | Wigan | 2024 |
| Bounce and Balance Fit Ltd | London | 2025 |
| Bounce and Play Limited | Bournemouth | 2026 |
| Bounce and Slide Ltd | Coventry | 2026 |
| Bounce and Smile Ltd | Warminster | 2022 |
| Bounce Around Sheffield Ltd | Doncaster | 2015 |
| Bounce Attack Limited | Waterlooville | 2024 |
| Bounce Away Entertainment Ltd | Londonderry | 2013 |
| Bounce Back Events Limited | Wallasey | 2020 |
| Bounce Beyond Manchester Limited | Manchester | 2019 |
| Bounce Bhangra Ltd. | Stanmore | 2017 |
| Bounce Buddies Limited | Nottingham | 2024 |
| Bounce Camp Limited | Leighton Buzzard | 2025 |
| Bounce City Ltd | Ellon | 2024 |
| Bounce EM Ltd | Ampthill | 2023 |
| Bounce Farringdon Ltd | London | 2011 |
| Bounce Fitness Limited | Birmingham | 2015 |
| Bounce GEN Events Ltd | Edinburgh | 2025 |
| Bounce GY Ltd | Great Yarmouth | 2022 |