| Bridgwater Recycling Limited | Water & waste | 2025 |
| Bridgwater Road Management Company | Households | 2019 |
| Bridle & Box Ltd | Administrative & support | 2025 |
| Bridlington Schools Services Limited | Real estate | 2000 |
| Brief Ltd | Administrative & support | 2020 |
| Briefbox Limited | Information & communication | 2016 |
| Brigdecare Independence Ltd | Health & social care | 2025 |
| Briggs Bray Electrical Services Ltd | Construction | 2023 |
| Briggs Climate Control Ltd | Energy | 2019 |
| Bright & Brainy Limited | Wholesale & retail | 2023 |
| Bright & Caring Star Ltd | Administrative & support | 2020 |
| Bright 360 Ltd | Real estate | 2025 |
| Bright Business Solutions Ltd | Professional & scientific | 2023 |
| Bright Butler Consulting Ltd | Professional & scientific | 2008 |
| Bright Contracts Limited | Construction | 2016 |
| Bright Event Management Limited | Administrative & support | 2003 |
| Bright Evolve Ltd | Professional & scientific | 2023 |
| Bright Flight Detailing Ltd | Administrative & support | 2026 |
| Bright FOX Productions Ltd | Information & communication | 2024 |
| Bright Future Residences Ltd | Hospitality | 2023 |
| Bright Green Futures Limited | Construction | 2009 |
| Bright Green Futures Rental Ltd | Hospitality | 2022 |
| Bright Holdings Limited | Financial services | 2017 |
| Bright Ideas Club Property Ltd | Real estate | 2024 |
| Bright Key Property Ltd | Real estate | 2014 |
| Bright Kidzcare Ltd | Health & social care | 2015 |
| Bright Light LED Ltd | Professional & scientific | 2024 |
| Bright Plumbing and Heating Limited | Construction | 2025 |
| Bright Product Design Ltd | Professional & scientific | 2024 |
| Bright Property Developments Ltd | Administrative & support | 2017 |
| Bright Sky Cleaning Limited | Administrative & support | 2020 |
| Bright Sprout Ltd | Professional & scientific | 2021 |
| Bright Star HR Limited | Administrative & support | 2025 |
| Bright Stars Travel Ltd | Transport & logistics | 2025 |
| Bright Trading (SW) Ltd | Financial services | 2019 |
| Bright View Windows (SW) Limited | Construction | 2004 |
| Brightblue Systems Limited | Information & communication | 2000 |
| Brightelm Group Limited | Financial services | 2022 |
| Brightelm Limited | Administrative & support | 2017 |
| Brighter Minds Limited | Health & social care | 2020 |
| Brighter Youth Homes Limited | Health & social care | 2024 |
| Brightfare Travels Ltd | Administrative & support | 2025 |
| Brightly Collective Ltd | Wholesale & retail | 2026 |
| Brighton & Hove City Schools Services (Holdings) Limited | Other services | 2001 |
| Brighton & Hove City Schools Services Limited | Real estate | 2001 |
| Brighton Pharma Ltd | Wholesale & retail | 2018 |
| Brighton UK Holdings Ltd | Real estate | 2025 |
| Brightpoint Cleaning Services Limited | Administrative & support | 2024 |
| Brightrock Consulting Ltd | Professional & scientific | 2018 |
| Brights Auto Centre Limited | Wholesale & retail | 2008 |
| Brightseeds Education C.I.C. | Education | 2022 |
| Brightside Enterprises Limited | Administrative & support | 2019 |
| Brightside Marketing Solutions Ltd | Professional & scientific | 2016 |
| Brightside Mechanical and Electrical Contractors Limited | Construction | 2021 |
| Brightstar Legal Ltd | Professional & scientific | 2017 |
| Brightstowe Holdings Limited | Real estate | 1951 |
| Brightup Investments Limited | Real estate | 2023 |
| Brightview Finance Ltd | Professional & scientific | 2025 |
| Brightwell Neurological Support Centre Limited | Health & social care | 2005 |
| Brightworks Media Limited | Information & communication | 2010 |
| Brigstow Family Law Limited | Professional & scientific | 2020 |
| Brigstow Hydrographic Services Limited | Professional & scientific | 2013 |
| Brigstow Ltd | Financial services | 2025 |
| Brigstowe Compliance Ltd | Professional & scientific | 2016 |
| Brigstowe Estates Limited | Real estate | 2018 |
| Brigstowe Media Ltd | Professional & scientific | 2013 |
| Brigstowe Property Limited | Real estate | 2021 |
| Brikks Bristol Ltd | Real estate | 2022 |
| Brilliant Cleaning - Domestic Ltd | Administrative & support | 2024 |
| Brilliant Cleaning Contractors Ltd | Administrative & support | 2019 |
| BRILLIANT24 Ltd | Transport & logistics | 2026 |
| Brimarsh Limited | Hospitality | 2020 |
| Brimsham Park (NO 1) Management 1998 Limited | Households | 1998 |
| Brimsham Park (NO.10) Management Company Limited | Households | 1992 |
| Brimsham Park (NO.11) Management Company Limited | Households | 1992 |
| Brimsham Park (NO.2) Management Company Limited | Real estate | 1989 |
| Brimsham Park (NO.3) Management Company Limited | Households | 2001 |
| Brimsham Park (NO.4) Management Company Limited | Households | 1990 |
| Brimsham Park (NO.5) Management Company Limited | Hospitality | 1990 |
| Brimsham Park (NO.9) Management Company Limited | Households | 1990 |
| Brin Jones Limited | Wholesale & retail | 2004 |
| Brin's Kitchen Ltd | Professional & scientific | 2024 |
| Brindle Couriers Limited | Transport & logistics | 2003 |
| Brindley Engineering Solutions Ltd | Manufacturing | 2017 |
| Brindly Ltd | Wholesale & retail | 2025 |
| Brine Trading Ltd | Real estate | 2003 |
| Brinfield Limited | Construction | 2001 |
| Bring to Fruition Coaching Limited | Professional & scientific | 2022 |
| Brinkgreen 68 Oakfield Road Limited | Real estate | 2021 |
| Brinkgreen Limited | Real estate | 1972 |
| Brinnand Coaching Ltd | Administrative & support | 2022 |
| Brinsea Investments Limited | Financial services | 2021 |
| Briny Rogues Limited | Information & communication | 2008 |
| Brio Bath Limited | Professional & scientific | 2021 |
| Brio Ltd | Professional & scientific | 2019 |
| Briotec Ltd | Professional & scientific | 2012 |
| Brip 12 (Coln Wedmore) LLP | | 2025 |
| Bris-Tools Limited | Wholesale & retail | 2025 |
| Brisanz Limited | Professional & scientific | 2002 |
| Briscycle Ltd | Wholesale & retail | 2014 |