| Bunnyrun Productions Ltd | Baschurch | 2017 |
| Buns Pilates Limited | London | 2025 |
| Bunsen Limited | London | 2011 |
| Bunsentertainment Ltd | Dorking | 2021 |
| Buntingfield Farm Ltd | Chesterfield | 2022 |
| Buntingford Town Football Club Limited | Buntingford | 2025 |
| Bunty Haven Limited | Cheltenham | 2014 |
| Buonanotte Fiorellino Limited | London | 2024 |
| BUP Arts CIC | Chatham | 2023 |
| Bupsi Productions Ltd | London | 2021 |
| Burach Productions Limited | Kinross | 1992 |
| Burbage Cricket Centre of Excellence Limited | Newbury | 2023 |
| Burbage RFC Ltd | Hinckley | 2018 |
| Burderop Bombers Softball Ltd | Swindon | 2024 |
| Burdett-Coutts Limited | London | 2010 |
| Bure Valley Adventures Limited | Norwich | 2005 |
| Bureau Helmlinger Limited | London | 2014 |
| Bureau LH Ltd | Stockport | 2018 |
| Bureau of Extraordinary Affairs Ltd | Waltham Cross | 2016 |
| Bureau One Zero Ltd | Manchester | 2024 |
| Bures Music Festival Ltd | Bures | 2019 |
| Bureside Holiday Park Limited | Great Yarmouth | 2012 |
| Burford Golf Club Limited | Burford | 1963 |
| BURFORD12 Ltd | Chislehurst | 2016 |
| Burgaboy Ltd | Manchester | 2026 |
| Burgess Barn Studios Limited | Waltham Abbey | 2018 |
| Burgess Hill Model Railway Club | London | 2021 |
| Burgess Hill Rugby Football Club Ltd | Burgess Hill | 2013 |
| Burgess Hill Town F C Group Limited | Burgess Hill | 2023 |
| Burgess Hill Town F C Juniors Limited | Burgess Hill | 2024 |
| Burgess Hill Town Football Club Limited | Burgess Hill | 2000 |
| Burgess Hill Youth | Haywards Heath | 2012 |
| Burgess Park Skating Community CIC | London | 2025 |
| Burgess Precision Coaching Ltd | Halifax | 2025 |
| Burgess Showjumping Limited | Goudhurst | 2018 |
| Burgh LE Marsh Sports Field Ltd | Skegness | 2025 |
| Burgh Town FC Ltd | Skegness | 2025 |
| Burgham Horse Trials Ltd | Newcastle Upon Tyne | 2010 |
| Burghfield Community Sports Association | Reading | 2009 |
| Burghfield Residents CIC | Reading | 2024 |
| Burghfield Sailing Company Limited | Reading | 1987 |
| Burghill Valley Golf Club Limited | Hereford | 2014 |
| Burghley Horse Trials Limited | Stamford | 2009 |
| Burghley IT Limited | Rochdale | 2015 |
| Burgoyne Arts and Education Limited | Northwich | 2025 |
| Burhall Sports Agency Ltd | London | 2024 |
| Burhill Golf and Leisure Limited | Surrey | 1980 |
| Burhope Farm Campsite Limited | Hereford | 2006 |
| Buried Crowns Limited | Middlesbrough | 2015 |
| Buried Elephant Limited | Poole | 2019 |
| Burke and Hare Creative Limited | Rayleigh | 2018 |
| Burleigh Golf Limited | Bakewell | 2022 |
| Burleigh Street Ltd | Irvinestown | 2025 |
| Burleigh Street Productions Limited | London | 2020 |
| Burleigh Street Publishing Limited | London | 2013 |
| Burlesque on Ice Limited | Stratford-Upon-Avon | 2013 |
| Burlesque on Stage Limited | London | 2018 |
| Burlesquercise Ltd | Ilkeston | 2019 |
| Burley Banksy Art Limited | Leeds | 2020 |
| Burley Paddocks Livery Ltd | Newcastle | 2014 |
| Burley Rufc Ltd | Leeds | 2016 |
| Burlington House Limited | London | 1988 |
| Burlton Manor Equestrian Limited | Shrewsbury | 2018 |
| Burmarsh Children's Fund | Romney Marsh | 2005 |
| Burmex Limited | Keighley | 1992 |
| Burn Bright Theatre Ltd | London | 2015 |
| Burn by Tash Ltd | Twickenham | 2025 |
| Burn Dial Ltd | London | 2025 |
| Burn Fitness (Cleethorpes) Limited | Cleethorpes | 2003 |
| Burn Gliding Club Ltd(The) | Selby | 1959 |
| Burn IT Down Ltd | Torquay | 2023 |
| Burn IT Fitness Ltd | Birmingham | 2010 |
| Burn LDN Ltd | London | 2020 |
| Burn the Curtain C.I.C. | Honiton | 2011 |
| Burn the Ditch Ltd | Smethwick | 2024 |
| Burn the Floor Limited | London | 2010 |
| Burn X Fitness Ltd | Blackpool | 2022 |
| Burnage Community Wrestling Club CIC | Stockport | 2021 |
| Burnawn Fitness Ltd | Kilmarnock | 2018 |
| Burnback Limited | London | 2006 |
| Burncroft Limited | Cinderford | 2001 |
| Burnden Park Sports Limited | Warrington | 2015 |
| Burned by Design Ltd | York | 2015 |
| Burnell Group Ltd | Bristol | 2023 |
| Burnell Leisure Ltd | Witney | 2022 |
| Burnett Academy Limited | Heanor | 2017 |
| Burnett Granger Crowther Limited | London | 1963 |
| Burnham and Berrow Golf Club Limited | Somerset | 1993 |
| Burnham Beeches Golf Club,Limited(The) | Bucks | 1909 |
| Burnham Football Club Limited | Slough | 2005 |
| Burnham Golf Range Limited | Highbridge | 2022 |
| Burnham Heritage Centre Ltd | Burnham-On-Sea | 2021 |
| Burnham Leisure (2020) Limited | Slough | 2020 |
| Burnham on Crouch Rugby Union Football Club Limited | Burnham On Crouch | 2010 |
| Burnham Ramblers Football Club Ltd | Burnham-On-Crouch, Essex | 2025 |
| Burnham-On-Crouch Golf Club Limited | Burnham-On-Crouch | 1966 |
| Burnham-On-Sea Bowling Club Limited(The) | St Andrews Road, Burnham-On-Sea | 1921 |
| Burnham-On-Sea Motor Club Limited | Somerset | 1974 |
| Burnhill FC CIC | Glasgow | 2021 |
| Burnieshed CIC | Alyth | 2024 |