| Brooklands Museum Trust Limited | Brooklands Road Weybridge | 1987 |
| Brooklands Sports Club Limited | Sale | 2017 |
| Brookleigh Riding Centre Limited | Richmond | 1999 |
| Brookline Charlie Limited | Richmond | 2014 |
| Brooklyn FOX Vintage Limited | Cannock | 2019 |
| Brooklyn Studio | Hebden Bridge | 2014 |
| Brookmans Park Golf Club Devco Limited | Brookmans Park | 2025 |
| Brookmans Park Golf Club Limited | Herts | 1933 |
| Brooks and Baker Ltd | Bloxham | 2024 |
| Brooks Art C.I.C. | Welshpool | 2014 |
| Brooks Babies Limited | Belper | 2021 |
| Brooks Defence Ltd | Wokingham | 2025 |
| Brooks Hall Rovers Football Club CIC | Ipswich | 2025 |
| Brooks House Studios Ltd | Carluke | 2026 |
| Brooks Marquee Hire Limited | Maidstone | 2019 |
| Brooks Smith Gallery Ltd | Corsham | 2010 |
| Brookside Miniature Railway Ltd | Timperley | 2018 |
| Brookspeed International Motorsport Limited | Southampton | 2008 |
| Brookswell Ltd | Swindon | 2024 |
| Broom Handle Theatre Company Ltd | Ashford | 2019 |
| Broom Mill Farms Spa Limited | Co Durham | 2004 |
| Broomfield FC Services Ltd | Chelmsford | 2020 |
| Broomfield Park Swimming and Recreational Club Limited | Barnet | 1994 |
| Broomfield Stadium Holdings Limited | Airdrie | 2011 |
| Broomhill Bouldering Company Ltd | Hope Valley | 2025 |
| Broomhill Library Friends Ltd | Felixstowe | 2012 |
| Broomieknowe Golf Club Ltd. (the) | | 1953 |
| Broomstock Limited | London | 2018 |
| Broomwood Football Club Limited | London | 2017 |
| Brophs Health & Fitness Limited | Airdrie | 2013 |
| Brora Golf Club Limited | Brora | 2024 |
| Brora Rangers Football Club Ltd | Brora | 2020 |
| Broskii Ltd | London | 2024 |
| Brothel the Musical Limited | London | 2024 |
| Brother From Another Ltd | Chippenham | 2017 |
| Brother From Another Productions Limited | Chippenham | 2024 |
| Brother Strut Limited | Epsom | 2013 |
| Brother Wolf Ltd | Bromley | 2023 |
| Brotherbear Events Ltd. | Birmingham | 2011 |
| Brotherman Limited | New Brighton | 2013 |
| Brothers Band Media Production Ltd | Chelmsford | 2025 |
| Brothers in Arms Management Ltd | London | 2019 |
| Brothers in Limited | Middlesbrough | 2011 |
| Brothers Tattoo Limited | Bristol | 2025 |
| Brough Community Fitness Ltd | Brough | 2024 |
| Brough Golf Club Limited | Brough | 2017 |
| Brougham Hall CIC | Penrith | 2024 |
| Broughton & Bretton Motor Club Limited | Flint | 2002 |
| Broughton Heath Limited | Burton On Trent | 2013 |
| Broughton Padel (Preston) Limited | Preston | 2025 |
| Broughton Park Trading Limited | Manchester | 2016 |
| Broughton Spa Limited | Nr Worcester | 2006 |
| Brown and Mills Entertainment Limited | Maidstone | 2013 |
| Brown BAG Films UK Limited | London | 2014 |
| Brown Bear Comedy Ltd | Barnsley | 2025 |
| Brown Bear Creative Ltd | Carlisle | 2015 |
| Brown Button Events Ltd | Bournemouth | 2011 |
| Brown Edge Village Hall Limited | Stoke On Trent | 2015 |
| Brown Envelope Productions Ltd | Sevenoaks | 2026 |
| Brown Eyed Production Ltd | London | 2021 |
| Brown Girls Skate TOO C.I.C. | London | 2025 |
| Brown Girls Summit C.I.C. | London | 2025 |
| Brown Leisure Limited | Ryde | 1999 |
| Brown Lemonade Community Interest Company | Belfast | 2015 |
| Brown Lounge Limited | Shrewsbury | 2012 |
| Brown Office Ltd | London | 2015 |
| Brown Sheep Limited | London | 2025 |
| Brown Shutters Farm Airfield Ltd | Taunton | 2016 |
| Brown Waters Picture Films Ltd | Manningtree | 2024 |
| Brownbill Creatives Ltd | Liverpool | 2025 |
| Browndown Limited | Southampton | 2020 |
| Brownfrown Entertainment Ltd | London | 2015 |
| Brownlee & Associates Ltd | Newcastle Under Lyme | 2015 |
| Brownlee Fitness Limited | Ipswich | 2020 |
| Brownlee Racing Ltd | Ipswich | 2024 |
| Browns Design Ltd | London | 2004 |
| Browns Elite Juniors Ltd | Swindon | 2024 |
| Browns Elite Ladies Ltd | Swindon | 2024 |
| Browns Investment Group Ltd | London | 2025 |
| Brownsea Open Air Theatre Limited | Bournemouth | 1978 |
| Brownstone Cowboys Ltd | London | 2025 |
| Brownstown Community Development Limited | Craigavon | 2025 |
| Brox London Ltd | London | 2023 |
| Broxbourne Rowing Club | Broxbourne | 2019 |
| Broxbourne Rowing Club (Trading) Limited | Broxbourne | 2021 |
| Broxbourne S C Limited | Waltham Cross | 2023 |
| Broxbourne Sports Club | Broxbourne | 2022 |
| Broxburn Taekwon-Do School Ltd. | Glasgow | 2009 |
| Broxburn United Sports Club Trust | Broxburn | 2008 |
| Brozel Films Ltd | Borehamwood | 2015 |
| BRP Film Services Ltd | London | 2021 |
| Brs-Dance Ltd | Wirral | 2024 |
| BRT Stratos Ltd | London | 2025 |
| Bru-C Music Limited | Nottingham | 2020 |
| Bruach Music Ltd | Perth | 2025 |
| Bruce & Co Designs Ltd | Rhyl | 2025 |
| Bruce Bookmakers Limited | Middlesex | 2003 |
| Bruce DE Rouche BG Holding Ltd | London | 2025 |
| Bruce French Limited | Leek | 2010 |
| Bruce Kelly Limited | London | 2025 |