| Boehringer Ingelheim Animal Health UK Limited | Manufacturing | 1985 |
| Bolt Consulting Group Ltd | Information & communication | 2022 |
| Bombus Group Limited | Information & communication | 2026 |
| Bonev Solutions Ltd | Information & communication | 2018 |
| Bonitas Multi-Academy Trust Limited | Education | 2011 |
| Bontrans Logistics Limited | Transport & logistics | 2023 |
| Boogie Pumps (Bracknell) Ltd | Arts & recreation | 2026 |
| Booking My Car Ltd | Transport & logistics | 2026 |
| Boost Business Plus Limited | Wholesale & retail | 2013 |
| Booth Brothers Property Ltd | Real estate | 2026 |
| Borg Electronics Ltd | Extraterritorial | 2004 |
| Borough BEE Ltd | Professional & scientific | 2025 |
| Boscan Properties Ltd | Real estate | 2023 |
| Bosmere Limited | Real estate | 2021 |
| Boss Cosmetics Limited | Other services | 2020 |
| Bostan Consultancy Ltd | Information & communication | 2012 |
| Bosver Ltd | Wholesale & retail | 2018 |
| Boswell Tree Surgeons Ltd | Agriculture & fishing | 2022 |
| Bounty Plentitude Ltd | Health & social care | 2024 |
| Bournemouth Properties 2022 Ltd | Real estate | 2022 |
| Bournes of London Projects Ltd | Other services | 2004 |
| Bowra Limited | Wholesale & retail | 2022 |
| Bowtie Television Limited | Information & communication | 1989 |
| Boxing for Veterans C.I.C. | Arts & recreation | 2018 |
| BPM Transport Limited | Transport & logistics | 2023 |
| BR Heating & Plumbing Limited | Construction | 2011 |
| BR Training Solutions Ltd | Professional & scientific | 2012 |
| Bracknell Auto Locksmith Ltd | Wholesale & retail | 2026 |
| Bracknell Bisons F.C. Ltd | Arts & recreation | 2021 |
| Bracknell Drainage Services Ltd | Construction | 2025 |
| Bracknell Executive Cars Ltd. | Transport & logistics | 2017 |
| Bracknell Food Limited | Hospitality | 2025 |
| Bracknell Forest Leisure Limited | Hospitality | 2017 |
| Bracknell Glazing Commercial Limited | Construction | 2021 |
| Bracknell Glazing Limited | Construction | 2000 |
| Bracknell Halal Meat Limited | Wholesale & retail | 2025 |
| Bracknell Home Interiors & Maintenance Limited | Construction | 2013 |
| Bracknell Investment Group Limited | Professional & scientific | 2020 |
| Bracknell Lawn Tennis Club Limited | Arts & recreation | 2019 |
| Bracknell Parent Carer Forum CIC | Information & communication | 2025 |
| Bracknell Personnel Services Limited | Extraterritorial | 2020 |
| Bracknell Pest Control Limited | Administrative & support | 1988 |
| Bracknell Pizza Shop Ltd | Hospitality | 2016 |
| Bracknell Print Room Limited | Administrative & support | 1991 |
| Bracknell Shopmobility | Other services | 2004 |
| Bracknell Stores Limited | Administrative & support | 2017 |
| Bracknell Sweets Limited | Wholesale & retail | 2020 |
| Bracknell Tangs Management Limited | Hospitality | 2016 |
| Bracknell Windows and Doors Limited | Construction | 2023 |
| Bracknell Windows Ltd | Construction | 2013 |
| Bradshaw Grice Limited | Financial services | 2006 |
| Brainsware Ltd | Information & communication | 2020 |
| Brand Chatter Limited | Professional & scientific | 2016 |
| Brandt PSS Ltd. | Professional & scientific | 2011 |
| Braywood Landscapes Limited | Administrative & support | 2025 |
| Breadcroft Solutions Ltd | Construction | 2025 |
| Breathe Potentia Ltd | Wholesale & retail | 2024 |
| Breen Tree Surgery Ltd | Administrative & support | 2025 |
| Brett Plumbing Limited | Construction | 1999 |
| Bretts GAS & Heating Ltd | Construction | 2015 |
| Brew Coffee Ltd | Hospitality | 2023 |
| Brian John Sidebotham Ltd. | Information & communication | 2012 |
| Bribin Group Ltd | Wholesale & retail | 2025 |
| Bridge Communities Limited | Education | 1991 |
| Briggs Electrical Solutions Ltd | Construction | 2022 |
| BRIGHTLIGHT7 Limited | Real estate | 2024 |
| Brightlingua Ltd | Professional & scientific | 2018 |
| Brightmore Engineering Limited | Professional & scientific | 2016 |
| Brighton Billies Limited | Wholesale & retail | 2024 |
| Brightstart Early Years Consulting Ltd | Education | 2016 |
| Britdine Ltd | Hospitality | 2024 |
| British Association of Reinforcement Limited | Other services | 2005 |
| Britpave | Construction | 1991 |
| Broadcast Productions Ltd | Information & communication | 2012 |
| Broadcast System Installation Ltd | Manufacturing | 2014 |
| Brockhill Equestrian Limited | Real estate | 2025 |
| Brokerguide.Com Ltd | Information & communication | 2020 |
| Brook House Caravan Park Limited | Hospitality | 2025 |
| Brook House Inn Developments Limited | Real estate | 2025 |
| Brookstream Consultancy Limited | Administrative & support | 2012 |
| Brosea Inc Limited | Households | 2020 |
| Brothers' Housing Estates Limited | Construction | 2013 |
| BRX Tax & Accounting Ltd | Professional & scientific | 2026 |
| Bryce Jewell Consulting Ltd | Professional & scientific | 2025 |
| Bryce Mcmurray Personal Training Ltd | Arts & recreation | 2016 |
| Bsria Cert Limited | Professional & scientific | 2009 |
| Bssl Ltd | Wholesale & retail | 2019 |
| BT Four Ltd | Construction | 2017 |
| BT One Ltd | Real estate | 2011 |
| BT Seven Ltd | Real estate | 2022 |
| BT SIX Ltd | Wholesale & retail | 2017 |
| BT Three Limited | Real estate | 2012 |
| BT Two Ltd | Real estate | 2021 |
| BTK Health Ltd | Health & social care | 2025 |
| BTS Removals Ltd | Transport & logistics | 2024 |
| Bubbling Care Services Limited | Health & social care | 2014 |
| Buck' N Bull Ltd | Hospitality | 2017 |
| Buckingham Vintners International Limited | Wholesale & retail | 2002 |
| Buckleup Shop Limited | Wholesale & retail | 2025 |
| Buddyai Ltd | Wholesale & retail | 2026 |