| Brand Energy & Infrastructure Services UK, Ltd. | Construction | 2013 |
| Brand Labs Venture Studio Ltd | Financial services | 2023 |
| Brand Mechanical Engineering Limited | Manufacturing | 2004 |
| Brand Motor Limited | Professional & scientific | 2012 |
| Brand Scaling Limited | Professional & scientific | 2024 |
| Brand Thinking Ltd | Administrative & support | 2011 |
| Brand Vine Holdings Ltd | Professional & scientific | 2021 |
| Brand Your Office Limited | Construction | 2019 |
| Brandasia Holdings Limited | Financial services | 2009 |
| Brandasia Limited | Hospitality | 2004 |
| Brandasia NO 3 Limited | Professional & scientific | 2009 |
| Branded Clothing Limited | Wholesale & retail | 2002 |
| Branded for YOU Ltd | Wholesale & retail | 2019 |
| Brandenburg Direct Limited | Professional & scientific | 2004 |
| Brandhall Launderette Limited | Administrative & support | 2014 |
| Brandhall Supplies Limited | Construction | 2025 |
| Brandi Pet Chat Ltd | Health & social care | 2023 |
| Branding Corporation Investment Limited | Financial services | 2016 |
| Branding Lounge Ltd | Professional & scientific | 2024 |
| Brandmark Consultants Limited | Wholesale & retail | 2014 |
| Brandmark Investments Ltd | Financial services | 2025 |
| Brandon Court Management Company Limited | Extraterritorial | 1989 |
| Brands Basket Ltd | Wholesale & retail | 2024 |
| Brands Forever Ltd | Wholesale & retail | 2014 |
| Brands Properties Ltd | Real estate | 2019 |
| Brandscape Limited | Professional & scientific | 1997 |
| Brandtonus LP | | 2018 |
| Brandwood Homes Ltd | Health & social care | 2025 |
| Brandwood Motors Ltd | Wholesale & retail | 2020 |
| Brandwood Muslim Burials | Other services | 2019 |
| Brandwood Park Ltd | Construction | 2018 |
| Brandxhub Ltd | Professional & scientific | 2024 |
| Branelli Limited | Health & social care | 2023 |
| Branemark Limited | Health & social care | 2024 |
| Branest & C0 Ltd | Hospitality | 2026 |
| Branhill Ltd | Wholesale & retail | 2019 |
| Brannigans Cleaning Services Ltd | Administrative & support | 2022 |
| Branns Ltd | Wholesale & retail | 2021 |
| Branson Recruitment Ltd | Administrative & support | 2019 |
| Branston Barnes Ltd | Other services | 2016 |
| Branston Plastics Limited | Manufacturing | 2008 |
| Branstone Hire Ltd | Administrative & support | 2022 |
| Brant Financial Limited | Financial services | 2005 |
| Branval Civils Ltd | Construction | 2026 |
| Branwold Ltd | Wholesale & retail | 2026 |
| Brar & Daughters Enterprises Limited | Real estate | 2025 |
| Brarki Limited | Real estate | 2018 |
| Bras Trading Ltd | Wholesale & retail | 2023 |
| Brasfruit Delight Gold Limited | Wholesale & retail | 2023 |
| Brask Healthcare Limited | Health & social care | 2013 |
| Brass Lock Ltd | Information & communication | 2024 |
| Brass Motor Company Ltd | Wholesale & retail | 2023 |
| Brass One Limited | Hospitality | 2018 |
| Brass Works Ltd | Wholesale & retail | 2017 |
| Brassmati Limited | Hospitality | 2024 |
| Brathayiny Tradings Limited | Wholesale & retail | 2020 |
| Bratolyubie Limited | Other services | 2025 |
| Bratt Building Plumbing & Roofing Limited | Construction | 2000 |
| Bratt's Building Limited | Construction | 2016 |
| Bratties & Chips Ltd | Hospitality | 2018 |
| Bratu Mircea 0779 Limited | Transport & logistics | 2015 |
| Brave CX Limited | Information & communication | 2024 |
| Brave Path Clothing Ltd | Manufacturing | 2025 |
| Bravelyn Group Ltd | Wholesale & retail | 2026 |
| Bravena Ltd | Wholesale & retail | 2025 |
| Bravenote Ltd | Information & communication | 2021 |
| Bravique Wellness Private Limited | Wholesale & retail | 2025 |
| Bravo 2 Limited | Real estate | 2020 |
| Bravo Brands Limited | Manufacturing | 2025 |
| Bravo Eight Group Limited | Real estate | 2021 |
| Bravo International Ltd | Wholesale & retail | 2026 |
| Bravo Pizza Birmingham Limited | Wholesale & retail | 2024 |
| Bravo Recruitment Limited | Wholesale & retail | 2024 |
| Bravoechonov Ltd | Other services | 2025 |
| Bravora Ltd | Wholesale & retail | 2025 |
| Bravurx UK Ltd | Wholesale & retail | 2026 |
| Brayn Health Ltd | Wholesale & retail | 2025 |
| Brayne & Price Fine Food Limited | Wholesale & retail | 2009 |
| Brayne & Price Holdings Limited | Financial services | 2021 |
| Brayne & Price Properties Limited | Real estate | 2021 |
| Brays 484 Limited | Hospitality | 2019 |
| Braythorn Limited | Professional & scientific | 2020 |
| Braywhite & Co Limited | Wholesale & retail | 1972 |
| Braywhite MS Limited | Real estate | 2019 |
| Braywhite Sales Limited | Wholesale & retail | 1985 |
| Braywhite Service Limited | Wholesale & retail | 1985 |
| Brazenell Property Limited | Real estate | 2023 |
| Brazier Investment Group Limited | Real estate | 2025 |
| Brazilian Gold Cosmetics Limited | Other services | 2022 |
| Brazztun Limited | Real estate | 2016 |
| BRB Consulting Ltd | Administrative & support | 2025 |
| BRB Engineering Ltd | Manufacturing | 2024 |
| BRB Production Services Limited | Arts & recreation | 2014 |
| BRB Rigging Services Ltd | Administrative & support | 2013 |
| BRB Trading Limited | Wholesale & retail | 2021 |
| BRC Barnsley Limited | Professional & scientific | 1950 |
| Brco Ltd | Health & social care | 2017 |
| BRD Beds Ltd | Manufacturing | 2026 |
| BRD Property Ltd | Real estate | 2023 |
| Brdb Culinary Ventures Limited | Hospitality | 2026 |