| Bright Beany Accounting Limited | Professional & scientific | 2021 |
| Bright Bloom Cleaning Ltd | Administrative & support | 2026 |
| Bright BRO Intl Ltd | Manufacturing | 2025 |
| Bright Days Care Services Ltd. | Health & social care | 2026 |
| Bright Doors Property Management Ltd | Wholesale & retail | 2020 |
| Bright Energy Solutions Ltd | Professional & scientific | 2013 |
| Bright Future Healthcare Ltd | Administrative & support | 2022 |
| Bright Futures (Staffing) Ltd | Health & social care | 2026 |
| Bright Futures Accommodation (Residential Childcare) Ltd | Health & social care | 2023 |
| Bright Futures Therapeutic Care Ltd | Health & social care | 2025 |
| Bright Hope Forever Limited | Real estate | 2020 |
| Bright House Group Ltd | Construction | 2021 |
| Bright Ideas Nottingham Ltd. | Information & communication | 2011 |
| Bright Lights Fireworks Limited | Arts & recreation | 2024 |
| Bright Nest Care Limited | Health & social care | 2024 |
| Bright Numbers Accountancy Ltd | Professional & scientific | 2026 |
| Bright Paths Care UK Ltd | Health & social care | 2025 |
| Bright Photography and Photobooths Ltd | Professional & scientific | 2024 |
| Bright Point Connect Limited | Health & social care | 2025 |
| Bright Property (Nottingham) Services Limited | Construction | 2023 |
| Bright R&D Limited | Professional & scientific | 2019 |
| Bright Space Solutions Limited | Real estate | 2003 |
| Bright Steps Recruitment Ltd | Administrative & support | 2026 |
| Bright Thinking Training Limited | Education | 2012 |
| Bright Ventures Education Group Limited | Financial services | 2022 |
| Bright View Pro Consultancy Ltd. | Extraterritorial | 2021 |
| Bright Vision ADS Limited | Professional & scientific | 2017 |
| Brightdart Limited | Wholesale & retail | 2002 |
| Brighter Assets Ltd | Construction | 2021 |
| Brighter Beginnings Coaching Limited | Education | 2026 |
| Brighter Futures Supporting Independent Living Limited | Health & social care | 2025 |
| Brighter Healthcare Solutions Limited | Health & social care | 2022 |
| Brighter Investments Ltd | Administrative & support | 2017 |
| Brightfield Holding Ltd | Construction | 2026 |
| Brightlife Supported Living Ltd | Health & social care | 2026 |
| Brightlingsea Haven Limited | Wholesale & retail | 1989 |
| Brightman LED Caribbean Ltd | Administrative & support | 2015 |
| Brightnell Development Ltd | Real estate | 2016 |
| Brightnest Studio Ltd | Wholesale & retail | 2025 |
| Brighton Kingsway Lodge Ltd | Hospitality | 2020 |
| Brighton Soul (Holdings) Limited | Financial services | 2022 |
| Brightside Care Solutions Ltd. | Health & social care | 2019 |
| Brightside Communications Limited | Professional & scientific | 2005 |
| Brigitte Bordeaux Wine Holdings Limited | Real estate | 2022 |
| Brigitte Bordeaux Wine Ltd | Wholesale & retail | 2018 |
| Brigstock Finance Limited | Financial services | 2004 |
| Brilliance Home Care Services Ltd | Health & social care | 2020 |
| Brilliance Offshore Consultants Ltd | Professional & scientific | 2017 |
| Brilliant Accounts Limited | Professional & scientific | 2016 |
| Brilliant Consulting Limited | Professional & scientific | 2012 |
| Brilliant Web Solutions Limited | Information & communication | 2011 |
| Brilliantly Beautiful Limited | Other services | 2021 |
| Brim Leicester Limited | Hospitality | 2025 |
| Brinsley Properties Ltd | Real estate | 2026 |
| Brinsley Windows Ltd | Construction | 2026 |
| Brinsmoor Solutions Limited | Manufacturing | 2000 |
| Brintech Ltd | Information & communication | 2020 |
| Bristol Investment Properties Limited | Real estate | 1988 |
| Bristol Soap Limited | Manufacturing | 2015 |
| Brit Construction and Cleaning Services Ltd | Administrative & support | 2025 |
| Brit Mega Emporium Ltd | Wholesale & retail | 2024 |
| Brit Padel Ltd | Construction | 2025 |
| Brit-Tec Ltd | Information & communication | 2024 |
| Britan FM Services Limited | Administrative & support | 2025 |
| Britannia Aesthetics Ltd | Other services | 2026 |
| Britannia Carpet Distribution Ltd | Wholesale & retail | 2019 |
| Britannia Cleaning Solutions Ltd | Administrative & support | 2025 |
| Britannia Firework Displays Limited | Other services | 2012 |
| Britannia Learning (UK) Ltd | Education | 2024 |
| Britannia Traders Inn Ltd | Wholesale & retail | 2025 |
| Britcart Ltd | Wholesale & retail | 2025 |
| Britdeals Hub Limited | Wholesale & retail | 2025 |
| Brite Logistics Ltd | Transport & logistics | 2016 |
| Britesh Car Sales Ltd | Wholesale & retail | 2025 |
| Britfinity Ltd | Wholesale & retail | 2025 |
| Britfix Properties Ltd | Real estate | 2020 |
| Britian Enterprise Ltd | Wholesale & retail | 2025 |
| Britian Mall Ltd | Wholesale & retail | 2025 |
| British Association of Clinical Dental Technicians | Health & social care | 2009 |
| British Canoeing | Other services | 1980 |
| British Canoeing Events Ltd | Arts & recreation | 2018 |
| British Drilling and Freezing Company Limited | Mining & quarrying | 1989 |
| British Healthcare Trades Association | Other services | 1919 |
| British International Clay Target Shooting Federation Limited | Arts & recreation | 2010 |
| British Mining Consultants Limited | Extraterritorial | 1987 |
| Britjam Global Ltd | Administrative & support | 2025 |
| Britocare Ltd | Administrative & support | 2026 |
| Briton Fabricators Limited | Construction | 1973 |
| Briton Holdings Limited | Professional & scientific | 2008 |
| Britson Properties Ltd | Real estate | 2024 |
| Britson Properties Sourcing Ltd | Administrative & support | 2024 |
| Britstar E-Commerce & Solutions Ltd | Wholesale & retail | 2024 |
| Britton Sports Limited | Construction | 2021 |
| Britton Venture Group Limited | Real estate | 2021 |
| Brittons Home and Leisure Limited | Wholesale & retail | 2021 |
| Britvale Ltd | Wholesale & retail | 2025 |
| Britwear Limited | Manufacturing | 2022 |
| Britwis Limited | Other services | 2023 |
| Brix Properties Ltd | Real estate | 2024 |
| Broad Day Marketing Services Ltd | Information & communication | 2021 |