| Brighter Beginnings Childcare Limited | Real estate | 2026 |
| Brighter Enterprises Limited | Construction | 2020 |
| Brighter Future Holdings Limited | Professional & scientific | 2018 |
| Brighter Future Initiative | Other services | 2014 |
| Brighter Sound Ltd | Arts & recreation | 2004 |
| Brightest Bulb Limited | Information & communication | 2016 |
| Brightest Star Child Care Ltd | Other services | 2015 |
| Brightfinch Limited | Professional & scientific | 2018 |
| Brightgate Academy Limited | Education | 2026 |
| Brighthaven Care Ltd | Health & social care | 2026 |
| Brightide Limited | Administrative & support | 2024 |
| Brightime Real Estate Ltd | Real estate | 2022 |
| Brightiux Ltd | Administrative & support | 2023 |
| Brightled Ltd | Wholesale & retail | 2011 |
| Brightline Ventures Limited | Wholesale & retail | 2025 |
| Brightminds-Haven Ltd | Health & social care | 2019 |
| Brightmustard Ltd | Information & communication | 2013 |
| Brightnest Homespaces Limited | Administrative & support | 2024 |
| Brighton & Hove Amateur Boxing Club | Arts & recreation | 2011 |
| Brighton Grove Management Company Limited | Households | 1989 |
| Brighton Hair Loss Centre Limited | Wholesale & retail | 2020 |
| Brighton International Language Centre Ltd | Administrative & support | 2023 |
| Brighton LP | | 2023 |
| Brighton Properties Holdings Limited | Financial services | 2022 |
| Brighton Properties Investments Limited | Real estate | 2022 |
| Brightop Limited | Administrative & support | 2014 |
| Brightopia Trading Ltd | Wholesale & retail | 2020 |
| Brightpath for Services Limited | Extraterritorial | 2026 |
| Brightpath Trading Ltd | Extraterritorial | 2025 |
| Brightside YAY Limited | Wholesale & retail | 1987 |
| Brightspark 2012 Ltd | Wholesale & retail | 2025 |
| Brightstar (Manchester Central Park) Limited | Hospitality | 2002 |
| Brightstar (Manchester) Limited | Real estate | 2017 |
| Brightstar Books Limited | Information & communication | 2016 |
| Brightstar Commercial Ltd | Real estate | 2020 |
| Brightstar Wealth Management Limited | Financial services | 2024 |
| Brightstars Childcare (Cleworth Road) Ltd | Education | 2015 |
| Brightstone Builders Limited | Construction | 2016 |
| Brightstone Management & Consulting Ltd. | Financial services | 2020 |
| Brightup Professional Cleaning Services Limited | Administrative & support | 2025 |
| Brightwatch Service Limited | Administrative & support | 2025 |
| Brightways Solutions Ltd | Professional & scientific | 2025 |
| Brightwise Constructions Limited | Construction | 2022 |
| Brightwise GB Limited | Real estate | 2023 |
| Brightyouth CIC | Education | 2024 |
| Brigid’S Spirit Publishing Limited | Information & communication | 2022 |
| Briidea Limited | Wholesale & retail | 2016 |
| Brik Capital Limited | Real estate | 2026 |
| Brikora Limited | Real estate | 2026 |
| Brill Cars Ltd | Wholesale & retail | 2025 |
| Brillant Jade Limited | Information & communication | 2021 |
| Brillar Limited | Wholesale & retail | 2019 |
| Brilliant & Better Ltd | Extraterritorial | 2023 |
| Brilliant Business Trade Ltd | Wholesale & retail | 2025 |
| Brilliant Darkness Limited | Other services | 2016 |
| Brilliant Holdings Limited | Information & communication | 2020 |
| Brilliant Hospitality Management Ltd | Real estate | 2014 |
| Brilliant INK Group Limited | Wholesale & retail | 2020 |
| Brilliant Online Brands Ltd | Wholesale & retail | 2021 |
| Brilliant Painting & Decorating Ltd | Construction | 2020 |
| Brilliant Tech Limited | Extraterritorial | 2007 |
| Brilliante Teknon Ltd | Transport & logistics | 2026 |
| Brillianthalo Services Ltd | Hospitality | 2025 |
| Brimart Motors Limited | Wholesale & retail | 2009 |
| Brimco Coating Services Ltd | Construction | 2025 |
| Brimo Capital SPV1 Ltd | Financial services | 2026 |
| Brimpex Limited | | 1987 |
| Brimstone Pyrotechnics Limited | Arts & recreation | 2003 |
| Brinc Services Limited | Professional & scientific | 2015 |
| Brindle Grange Ltd | Wholesale & retail | 2019 |
| Brindle Holdings Enterprise Ltd | Financial services | 2026 |
| Brindlehand Enterprise Ltd | Health & social care | 2016 |
| Brindley Court Management Company Limited | Households | 2001 |
| Brinel Commercial Ltd | Construction | 2026 |
| Brinel Damp Proofing Services Ltd | Construction | 2026 |
| Brinexis Ltd | Wholesale & retail | 2026 |
| Bring Digital Limited | Information & communication | 2012 |
| Bring to Reason Limited | Professional & scientific | 2019 |
| Bringhaven Limited | Real estate | 1985 |
| Brinja One for General Contracting Company Ltd | Wholesale & retail | 2026 |
| Brink Art Studio CIC | Education | 2025 |
| Brinkdell Building Applications Limited | Households | 1972 |
| Brinkley Bollington Limited | Real estate | 2018 |
| Brinkman Ltd | Administrative & support | 2019 |
| Brinmere Ltd | Health & social care | 2003 |
| Brinnington Together Ltd | Education | 2025 |
| Brio Home Limited | Administrative & support | 2026 |
| Brio Manchester Ltd | Hospitality | 2024 |
| Briosell Ltd | Wholesale & retail | 2025 |
| Briosorchestra Project - Global Youth Social Orchestra | Arts & recreation | 2025 |
| Bripak Limited | Manufacturing | 2007 |
| Brisco Projects Limited | Construction | 2021 |
| Briscorp Ltd | Professional & scientific | 2024 |
| Brisean Ltd | Health & social care | 2025 |
| Brisk Global Travels Ltd | Wholesale & retail | 2023 |
| Brisk Renovations Ltd | Construction | 2023 |
| Brista Ltd | Wholesale & retail | 2021 |
| Bristol Aztec Assets (NO 2) Limited | Real estate | 2024 |
| Bristol Aztec Assets Limited | Real estate | 2024 |
| Bristol D&B Ltd | Construction | 2016 |