| Basingstoke Entertainment Ltd | Basingstoke | 2025 |
| Basingstoke Golf Club 1907 Ltd | Dummer | 2023 |
| Basingstoke Golf Club Limited (the) | Reading | 1968 |
| Basingstoke Gymnastic Club | Basingstoke | 1993 |
| Basingstoke Hema Limited | Basingstoke | 2020 |
| Basingstoke Hockey Club Limited | Basingstoke | 2017 |
| Basingstoke Pride CIC | Basingstoke | 2023 |
| Basingstoke RFC Trading Limited | Basingstoke | 2016 |
| Basingstoke Sports Club Limited | Newbury | 2018 |
| Basingstoke Town Limited | Basingstoke | 2001 |
| Basis Football Coaching County Durham Ltd | Bishop Auckland | 2024 |
| Basix Gym Limited | Irvine | 2008 |
| Baskerville School of Gymnastics | Bath | 2009 |
| Baskerville`S Health and Fitness Limited | Bath | 2009 |
| Basket Buddies Ltd | Solihull | 2024 |
| Basketball England | Manchester | 1979 |
| Basketball Entertainment Partners Ltd | London | 2018 |
| Basketball League Limited(The) | Leicester | 1986 |
| Basketball North West Development CIC | Oldham | 2025 |
| Basketball Northern Ireland Limited | Belfast | 2007 |
| Basketball Nxtion CIC | London | 2022 |
| Basketball Ventures UK Ltd | London | 2024 |
| BASKETBALL4ALL | Crowthorne | 2009 |
| Basketballers Limited | Wokingham | 2025 |
| Basketble Ltd | London | 2016 |
| Baskglow Limited | London | 1984 |
| Baslow Community Orchard Group | Bakewell | 2013 |
| Basportstar Limited | Reading | 2016 |
| Bass & Treble Ltd | Camberley | 2025 |
| Bass Angling Conservation Limited | Altrincham | 2023 |
| Bass Camp LDN Ltd | Wembley | 2024 |
| Bass Couture Ltd | Brighton | 2014 |
| Bass Drum Nation CIC | Kendal | 2019 |
| Bass HQ Limited | Solihull | 2018 |
| Bass Props Ltd | Glasgow | 2023 |
| Bassburst UK Ltd | Burton-On-Trent | 2025 |
| Bassc | Dagenham | 2021 |
| Bassenthwaite & District Motor Club Limited | Cockermouth | 1981 |
| Basset Down Complex Limited | Witney | 2021 |
| Bassett Theatre Ltd | London | 2026 |
| Bassi Box Ltd | South Woodford | 2020 |
| Bassingthorpe Limited | Grantham | 2023 |
| Bassini Art and Sports Sculptures Limited | Harrow | 2026 |
| Bassini’S Entertainments Limited | Harrow | 2020 |
| Basskonnection Ltd | Brighton | 2024 |
| Basslayerz Ltd | Ilkeston | 2018 |
| Bassline Circus Limited | Bristol | 2004 |
| Bassman Productions Limited | Canvey Island | 2019 |
| Bassmentality Ltd | London | 2024 |
| Bassnote Sessions Limited | Maldon | 2019 |
| Bassoff Events Ltd | Sheffield | 2025 |
| Bastard Ltd | London | 2020 |
| Bastet Media Ltd | London | 2026 |
| Baston FEN Leisure Park Limited | Baston | 1991 |
| BAT and Ball Cricket Coaching Limited | East Sussex | 2006 |
| BAT Angels Ltd | Thame | 2016 |
| BAT Skillz UK Ltd | Stoke On Trent | 2015 |
| Batala Kernow Ltd | Camborne | 2025 |
| Batala London Ltd | Potters Bar | 2010 |
| Batala Mersey Community Samba Reggae Band C.I.C. | Liverpool | 2019 |
| Batala Mundo Ltd | Potters Bar | 2023 |
| Batala Portsmouth Ltd | Southampton | 2023 |
| Batch Sports Therapy Limited | Hyde | 2022 |
| Batchelor of Arts Theatre & Media Ltd | London | 2017 |
| Batchworth Park Property Limited | Camberley | 1995 |
| Bates Body Factory Ltd | Towcester | 2018 |
| Bates Wharf Boat Club Ltd | Chertsey | 2024 |
| Batfast Cricket Centres Limited | Nottingham | 2013 |
| Bath & Wilts Schools' Sports Trust Limited | Bradford-On-Avon | 2013 |
| Bath Academy of Art Ltd | Llandovery | 2013 |
| Bath Academy of Media Make UP Ltd | Bath | 2012 |
| Bath and West Shows Limited | Shepton Mallet | 2013 |
| Bath Art Depot C.I.C. | Bath | 2020 |
| Bath Artist Printmakers Limited | Bath | 1985 |
| Bath Artists' Studios Limited | Upper Bristol Road | 1998 |
| Bath Arts Collective CIC | Bath | 2023 |
| Bath Arts Workshop Limited | Bath | 1973 |
| Bath Attractions Ltd | Bath | 2019 |
| Bath Baroque Limited | Wiltshire | 1995 |
| Bath Basketball C.I.C. | Chippenham | 2023 |
| Bath Beats Collective Ltd | Bath | 2022 |
| Bath Boating Station Limited | Bath | 2004 |
| Bath Box Office Limited | Bath | 2021 |
| Bath Canoe Club Limited | Bath | 1999 |
| Bath City FC Foundation | Bath | 2011 |
| Bath City Football Club,Limited | Bath | 1921 |
| Bath City Football Stadium CIC | Bath | 2023 |
| Bath City Youth Football Club Ltd | Bath | 2024 |
| Bath Cricket Club | Bath | 2003 |
| Bath Festivals | Bath | 1988 |
| Bath Folk Festival | Bath | 2013 |
| Bath Fringe Ltd | Bath | 1992 |
| Bath Gladiators Limited | Bath | 1986 |
| Bath Golf and Footgolf Ltd | Treorchy | 2022 |
| Bath Industrial Heritage Trust Limited | Bath | 1988 |
| Bath International Comedy Festival Limited | Bath | 2010 |
| Bath Laboratory of Culture C.I.C. | Bath | 2026 |
| Bath Leisure Limited | Bath | 2016 |
| Bath Motor Club Events Ltd | Radstock | 2024 |
| Bath Motor Club Limited | Radstock | 1976 |