| Brookleigh Contractors Limited | Construction | 1974 |
| Brookleigh Solutions Limited | Wholesale & retail | 2023 |
| Brookley Corporation Limited | Other services | 2024 |
| Brooklyn Landscapes Limited | Administrative & support | 2011 |
| Brooklyn Trading Limited | Wholesale & retail | 1992 |
| Brookmann Home Manchester 1877 Ltd | Wholesale & retail | 1877 |
| Brookmeade Building Ltd | Construction | 2016 |
| Brookmeade Developments Ltd | Real estate | 2018 |
| Brookmine Limited | Water & waste | 2021 |
| Brookroyd Limited | Health & social care | 2019 |
| Brooks and K Europe | | 1988 |
| Brooks Fish & Chips Ltd | Manufacturing | 2018 |
| Brooks Global Limited | Wholesale & retail | 2021 |
| Brooks Property Developments Limited | Real estate | 2016 |
| Brooks Rentals Ltd | Real estate | 2025 |
| Brooksan Limited | Professional & scientific | 2022 |
| Brooksdale Ltd | Professional & scientific | 2019 |
| Brookshaw Court RTM Company Limited | Households | 2011 |
| Brookshaw Developments Limited | Water & waste | 2010 |
| Brookside (Middleton) Limited | Households | 1996 |
| Brookside Drive Limited | Education | 2016 |
| Brookside Property Limited | Real estate | 2020 |
| Brooksland Limited | Construction | 2016 |
| Brookson (5028G) Limited | Construction | 2007 |
| Brookson (5065M) Limited | Administrative & support | 2007 |
| Brookson (5373H) Limited | Administrative & support | 2007 |
| Brookson (5594C) Limited | Administrative & support | 2007 |
| Brookson (5671A) Limited | Other services | 2007 |
| Brookstone Interiors Ltd | Manufacturing | 2026 |
| Brookvyne Limited | Real estate | 2006 |
| Brookway (Lindfield) Estate Limited(The) | Households | 1962 |
| Brookwood Property Holdings Ltd | Real estate | 2026 |
| Brookworth Safe Spaces CIC | Health & social care | 2025 |
| Broom Care Limited | Real estate | 2026 |
| Broom Estates NW Limited | Real estate | 2023 |
| Broom Lane Convenience Stroe Limited | Wholesale & retail | 2014 |
| Broom Stanley Investments Ltd | Real estate | 2005 |
| Broom View Limited | Real estate | 2021 |
| Broomco (3135) Limited | Extraterritorial | 2003 |
| Broomco (9831) Limited | Administrative & support | 2009 |
| Broome & Wellington | | 1969 |
| Broome & Wellington (Aviation) Limited | Transport & logistics | 1986 |
| Broome & Wellington (Holdings) Limited | Financial services | 1987 |
| Broome & Wellington (International) Limited | Professional & scientific | 1985 |
| Broomhawk Limited | Real estate | 2026 |
| Broompark Management Limited | Administrative & support | 1982 |
| Broompool Limited | Professional & scientific | 2000 |
| Broomwell Healthwatch Limited | Other services | 2004 |
| Broomwell Healthwatch Resources Limited | Professional & scientific | 2002 |
| Broomwood Estates Limited | Real estate | 2002 |
| Brophy Medical Limited | Health & social care | 2022 |
| Brorob Limited | Real estate | 2017 |
| Bros Fishing Supplies Ltd | Wholesale & retail | 2025 |
| Bros Motors Ltd | Wholesale & retail | 2021 |
| Broselea Ltd | Real estate | 2021 |
| Brother Finance (U.K.) PLC | Financial services | 1989 |
| Brother Group Limited | Wholesale & retail | 2024 |
| Brother Kebab Limited | Hospitality | 2025 |
| Brother Models Ltd | Administrative & support | 2016 |
| Brother Sports Ltd | Wholesale & retail | 2024 |
| Brother U.K. Limited | Wholesale & retail | 1889 |
| Brother Union Co Ltd | Wholesale & retail | 2026 |
| Brothers Chester Limited | Hospitality | 2015 |
| Brothers Holdings Ltd | Hospitality | 2025 |
| Brothers Investment Ltd | Other services | 2011 |
| Brothers Lettings Limited | Real estate | 2024 |
| Brothorn Group Limited | Professional & scientific | 2012 |
| Broughton (MCR) Estates Ltd | Real estate | 2020 |
| Broughton Balti Ltd | Hospitality | 2017 |
| Broughton Fashion Park Management Limited | Real estate | 2010 |
| Broughton Green Management Company Limited | Households | 2004 |
| Broughton Park Ambulance Services Ltd | Health & social care | 2016 |
| Broughton Park Estates Limited | Construction | 1961 |
| Broughton Park Trading Limited | Arts & recreation | 2016 |
| Broughton Place Management Limited | Households | 2018 |
| Broughton SH Ltd | Wholesale & retail | 2016 |
| Broughton Street Management Company Limited | Real estate | 1991 |
| Broughton Western Ltd. | Construction | 2019 |
| Broughtons Financial Planning Limited | Financial services | 2000 |
| Brow Buzz Ltd | Other services | 2014 |
| Brow Chic Ltd | Other services | 2023 |
| Brow Farm (Hollins Green) Management Company Limited | Households | 2005 |
| Brow House Academy Ltd | Other services | 2023 |
| Brow House Ltd | Other services | 2022 |
| Brow Life Limited | Other services | 2021 |
| Brow Ritual Limited | Other services | 2025 |
| Browluxeuk Ltd | Other services | 2022 |
| Browmere House Management Company Limited | Administrative & support | 1990 |
| Brown Capital Group Limited | Real estate | 2024 |
| Brown Construction & Development Ltd | Construction | 2013 |
| Brown Door Ltd | Real estate | 2024 |
| Brown Elite Property Sourcing Ltd | Real estate | 2025 |
| Brown Financial Services Limited | Administrative & support | 2011 |
| Brown Kuri Collective CIC | Administrative & support | 2025 |
| Brown Kuri Productions Ltd | Information & communication | 2023 |
| Brown Panda Ltd | Wholesale & retail | 2016 |
| Brownblackgrey Ltd | Professional & scientific | 2021 |
| Browne. Ltd | Wholesale & retail | 2026 |
| Brownfield Land Holdings Limited | Real estate | 2003 |
| Brownfield Solutions Limited | Professional & scientific | 2005 |