| Bradbury Landscaping & Property Services Ltd | Administrative & support | 2025 |
| Bradford (MCR) Limited | Real estate | 2023 |
| Bradford 247 Limited | Arts & recreation | 2018 |
| Bradford Consulting Limited | Professional & scientific | 2018 |
| Bradford Dragons Basketball Club Limited | Arts & recreation | 2013 |
| Bradford Hotel Assets Limited | Extraterritorial | 2014 |
| Bradford International Management Ltd | Real estate | 2021 |
| Bradford Manufacturing Futures Ltd | Professional & scientific | 2025 |
| Bradford Portfolio 2 Ltd | Real estate | 2021 |
| Bradford Road Car Sales Ltd | Wholesale & retail | 2015 |
| Bradite Limited | Manufacturing | 2001 |
| Bradley & Cavanagh Ltd | Real estate | 2025 |
| Bradley Hall Developments Limited | Construction | 2000 |
| Bradley Howard Holdings Limited | Professional & scientific | 2018 |
| Bradley Park Waste Management Limited | Water & waste | 2009 |
| Bradley Plumbing Services Limited | Construction | 2020 |
| Bradley Precision Engineering Limited | Manufacturing | 2024 |
| Bradley Projects Ltd | Professional & scientific | 2012 |
| Bradley's Furnishings Limited | Wholesale & retail | 2000 |
| Bradleyjd Limited | Construction | 2020 |
| Bradon Living Ltd | Construction | 2026 |
| Bradshaw & Co Property Ltd | Real estate | 2020 |
| Bradshaw & Hall Ltd | Real estate | 2012 |
| Bradshaw Asset Management Limited | Financial services | 1996 |
| Bradshaw Assets Limited | Real estate | 2017 |
| Bradshaw Industrial & Welding Services Limited | Manufacturing | 2003 |
| Bradshaw Industrial Holdings Ltd | Financial services | 2025 |
| Bradshaw Lawnmower Engineers Ltd | Wholesale & retail | 2024 |
| Bradshaw Utilities Limited | Energy | 2003 |
| Bradshawgate Properties Limited | Real estate | 2022 |
| Bradshaws of Leicester Limited | Transport & logistics | 2016 |
| Brady Devine Developments Ltd | Real estate | 2025 |
| Brady P&C Limited | Financial services | 2017 |
| Bradysofdublin Ltd | Wholesale & retail | 2020 |
| Braehead Finance Limited | Professional & scientific | 2009 |
| Braemar Enterprise WLL Limited | Administrative & support | 2026 |
| Braemer Limited | Wholesale & retail | 2026 |
| Brag Bird Ltd | Professional & scientific | 2021 |
| Brag Platforms Limited | Information & communication | 2026 |
| Bragi Ltd | Information & communication | 2015 |
| Braidwood Group Ltd | Financial services | 2026 |
| Brain Feed Holdco Limited | Financial services | 2024 |
| Brain Feed Ltd | Manufacturing | 2015 |
| Brain Feed Therapeutics Ltd | Professional & scientific | 2024 |
| Brain Storm Technical Consultancy Ltd | Information & communication | 2022 |
| Brain Trips UK Limited | Information & communication | 2020 |
| Brainalive Research Ltd | Extraterritorial | 2025 |
| Brainchild Ventures Ltd. | Wholesale & retail | 2019 |
| Braincrack Games Ltd. | Information & communication | 2016 |
| Braincrew Ltd | Information & communication | 2025 |
| Brainentrain Ltd | Professional & scientific | 2024 |
| Brainformx Limited | Education | 2023 |
| Brainix Limited | Information & communication | 2025 |
| Brainstorm Espana Limited | Professional & scientific | 2010 |
| Brainwave Asset Intelligence Ltd | Professional & scientific | 2026 |
| Brainwave Innovations Ltd | Information & communication | 2025 |
| Brainwave Neurofeedback Ltd | Other services | 2026 |
| Brainwork Tuition Limited | Education | 2019 |
| Braithwaite Floors Ltd | Construction | 2024 |
| Brakeleg Limited | Extraterritorial | 2011 |
| Braltoxa Ltd | Wholesale & retail | 2026 |
| Brama Group Ltd | Wholesale & retail | 2024 |
| Bramber Engineering Company,Limited(The) | Professional & scientific | 1916 |
| Bramberry Technology Solutions Limited | Information & communication | 2025 |
| Brambles Bakery Ltd | Wholesale & retail | 2010 |
| Brambleview Ltd | Real estate | 2022 |
| Bramhall & Lonsdale Limited | Administrative & support | 2003 |
| Bramhall and Cheadle Hulme PCN Limited | Health & social care | 2022 |
| Bramhall Care Limited | Health & social care | 2023 |
| Bramhall Catering Ltd | Hospitality | 2018 |
| Bramhall Davenport Holding Limited | Professional & scientific | 2017 |
| Bramhall Gourmet Ltd | Construction | 2015 |
| Bramhall Lane (Management Company) Limited | Households | 2005 |
| Bramhall Nails Ltd | Other services | 2024 |
| Bramhall Property Group Limited | Construction | 2025 |
| Bramhall Property Lettings Limited | Real estate | 2020 |
| Bramhi Healthcare Limited | Health & social care | 2022 |
| Bramo Ltd | Professional & scientific | 2026 |
| Brampage Limited | Real estate | 2016 |
| Brampton Real Estate Ltd | Real estate | 2018 |
| Bramptons Lift Manufacturers Limited | Administrative & support | 2001 |
| Bramwell Lane Estates Ltd | Health & social care | 2026 |
| Bramwell PUB Company Limited | Financial services | 2012 |
| Branagan Flooring Limited | Construction | 2019 |
| Branch AL Rasheed Trading Limited | Hospitality | 2020 |
| Branch Bahakeem International Trading Company Ltd | Wholesale & retail | 2020 |
| Branch Case Management Ltd | Health & social care | 2026 |
| Branch Nazeer Ahmed Ghulam Factory for Foodstuff Packing Ltd | Hospitality | 2018 |
| Branch of Sedim Trading Company Abdullah Mohammed Abdullah AL Sulaimani and HIS Partner Ltd | Hospitality | 2025 |
| Branch OFF Limited | Administrative & support | 2024 |
| Branch Shareef Commodities Limited | Wholesale & retail | 2020 |
| Branch Tareeq AL Huda Trading Limited | Hospitality | 2024 |
| Branch Tatco Gida Ithalat Ihracat Limited | Other services | 2023 |
| Branch Workshop Ltd | Manufacturing | 2022 |
| Branches Education Group Limited | Education | 2002 |
| Brand Addition Limited | Administrative & support | 1986 |
| Brand Aspect Ltd | Wholesale & retail | 2004 |
| Brand by Smith Ltd | Professional & scientific | 2022 |
| Brand Distribution Ltd. | Wholesale & retail | 2008 |
| Brand Emporium Ltd | Wholesale & retail | 2018 |