| Brond Brand Design Ltd | Professional & scientific | 2010 |
| Bronev Lifts Limited | Manufacturing | 2002 |
| Bronev Properties Limited | Real estate | 2023 |
| Broni Images Limited | Information & communication | 2024 |
| Bronze Orchid Limited | Other services | 2011 |
| Bronzesword Limited | Professional & scientific | 2002 |
| Brook Care Solutions Ltd | Health & social care | 2023 |
| Brook Court Bishopworth Property Management Limited | Households | 2003 |
| Brook Developments (South West) Ltd | Financial services | 2017 |
| Brook Holdings Bristol Limited | Financial services | 2026 |
| Brook Lodge Farm Limited | Hospitality | 2019 |
| Brook Office Management Company Limited | Real estate | 2002 |
| Brook Travel Services Ltd | Transport & logistics | 2026 |
| Brook View Management Company Limited | Households | 2007 |
| Brookfield Associates Ltd | Professional & scientific | 2023 |
| Brookfield Garage Limited | Wholesale & retail | 2006 |
| Brookfield Mobility Solutions Limited | Wholesale & retail | 2017 |
| Brookfield Planning & Transport Ltd | Professional & scientific | 2015 |
| Brookfield Publishing Limited | Information & communication | 2019 |
| Brookhaven Solutions Ltd | Professional & scientific | 2025 |
| Brookhouse Care Home Limited | Health & social care | 2006 |
| Brookland Black Ltd | Manufacturing | 2012 |
| Brooklands Gardens Management Company Limited | Households | 2016 |
| Brooklands Race Technology Limited | Construction | 2002 |
| Brooklands Solihull Management Company Limited | Households | 2023 |
| Brookleigh Limited | Other services | 2021 |
| Brooklyn Utilities Ltd | Information & communication | 2025 |
| Brookman Management Company Limited | Real estate | 1995 |
| Brookridge Court (Staple Hill) Limited | Households | 1972 |
| Brookridge Support Services Limited | Administrative & support | 2008 |
| Brooks Consultancy LLP | | 2019 |
| Brooks Content Consultancy Ltd | Professional & scientific | 2018 |
| Brooks Enterprise Solutions Ltd | Construction | 2014 |
| Brooks Interiors Ltd | Professional & scientific | 2016 |
| Brooks Medical Limited | Health & social care | 2015 |
| Brooks Taylor Properties Limited | Real estate | 2023 |
| Brooks Wealth Management LLP | | 2007 |
| Brookson (5028H) Limited | Administrative & support | 2007 |
| Brookson (5488C) Limited | Administrative & support | 2007 |
| Brookson 1989 Limited | Professional & scientific | 2014 |
| Brookson ACJ42 Limited | Administrative & support | 2009 |
| Broom Lettings Ltd | Real estate | 2025 |
| Broomerr Media Ltd | Information & communication | 2023 |
| Broomhill Barber Shop Ltd | Other services | 2003 |
| Broomwater Limited | Administrative & support | 2019 |
| Broomwell Lodge Management Company Limited | Households | 1988 |
| Bros Technologies Ltd | Professional & scientific | 2018 |
| Brothers Chiaroscuro Ltd | Extraterritorial | 2023 |
| Brothers Fencing & Landscaping Limited | Administrative & support | 2021 |
| Brothers Fruits and Vegetables Limited | Wholesale & retail | 2024 |
| Brothers Tattoo Limited | Arts & recreation | 2025 |
| Brotyre Limited | Wholesale & retail | 2023 |
| Brovey Limited | Agriculture & fishing | 2022 |
| Browel Property Ltd | Real estate | 2019 |
| Brown & Wynter Limited | Other services | 2020 |
| Brown and Bentley Ltd | Extraterritorial | 2013 |
| Brown and SON Interiors Ltd | Construction | 2019 |
| Brown Automotive Engineers Limited | Wholesale & retail | 2012 |
| Brown Bear Properties LLP | | 2017 |
| Brown Distribution Ltd | Transport & logistics | 2020 |
| Brown FOX Communications Limited | Professional & scientific | 2020 |
| Brown in Town Limited | Manufacturing | 2013 |
| Brown Industries Global Ltd | Wholesale & retail | 2022 |
| Brown Portfolio Limited | Real estate | 2025 |
| Brown R US Limited | Health & social care | 2025 |
| Brown Self Drive Ltd | Administrative & support | 2025 |
| Brown's Auto Engineers Ltd | Wholesale & retail | 2021 |
| Brown's Emporium Limited | Wholesale & retail | 2013 |
| Browne Restaurants Ltd | Hospitality | 2024 |
| Browning Court (Bourne) Limited | Real estate | 2008 |
| Browning Lettings Ltd | Real estate | 2025 |
| Brownlie JCT7 Ltd | Real estate | 2021 |
| Brownlow Veterinary Group Limited | Extraterritorial | 2012 |
| Brownlows (Bristol) Limited | Real estate | 1950 |
| Browns Beauty Products Ltd | Other services | 2019 |
| Browns Construction Group (SW) Ltd | Construction | 2024 |
| Browns R US Ltd | Health & social care | 2025 |
| Browns Tank Cleaning Limited | Water & waste | 1988 |
| Browns Trade Works Limited | Construction | 2024 |
| Brownstone Investments Limited | Real estate | 2026 |
| Brownstone Management Co Limited | Households | 2025 |
| Brownstone Studios Ltd | Administrative & support | 2021 |
| Brownstone Tech Ltd | Information & communication | 2012 |
| Browntrout International Ltd | Manufacturing | 2023 |
| Brozen Bar Limited | Wholesale & retail | 2017 |
| Brozen Labs Limited | Manufacturing | 2018 |
| Brozen Limited | Hospitality | 2016 |
| BRS ALL Plumbing and Heating Ltd | Construction | 2022 |
| BRS Asset Management Ltd | Information & communication | 2025 |
| BRS Autos Ltd | Wholesale & retail | 2025 |
| BRS Hydraulics Limited | Manufacturing | 2015 |
| Brss Holdings Limited | Financial services | 2026 |
| Brss Properties Limited | Real estate | 2024 |
| BRT Installation Ltd | Construction | 2022 |
| BRT Roofing & Building Ltd | Construction | 2025 |
| Bruce Charman Ltd | Administrative & support | 2025 |
| Bruce Wicks Transport & Training Consultancy Ltd | Transport & logistics | 2020 |
| Brugger Estate Ltd | Real estate | 2025 |
| Bruhaha Ltd | Manufacturing | 2021 |
| Bruin Biometrics Europe Limited | Manufacturing | 2013 |