| Buls Ventures Ltd | Real estate | 2022 |
| Bulvan Security Ltd | Administrative & support | 2026 |
| Bump & Grace Ltd | Wholesale & retail | 2026 |
| Bump&Milk Ltd | Wholesale & retail | 2020 |
| BUN & Dough Ltd | Real estate | 2021 |
| BUN & Slice Limited | Hospitality | 2025 |
| BUN Beyond Ltd | Hospitality | 2026 |
| BUN Enterprises Ltd | Hospitality | 2023 |
| BUN Kebab & Grill Spot Ltd | Hospitality | 2026 |
| BUN N Dough Ltd | Hospitality | 2024 |
| BUN With ME Ltd | Hospitality | 2025 |
| BUN YOU Ltd | Hospitality | 2024 |
| Bunbae Ltd | Wholesale & retail | 2025 |
| Bunce Single PLY Solutions Ltd | Construction | 2025 |
| Bunduq Company Limited | Mining & quarrying | 1970 |
| Bungebay Limited | Real estate | 1975 |
| Bunna Import & Export Ltd | Wholesale & retail | 2024 |
| Bunna Internet Cafe Ltd | Hospitality | 2016 |
| Bunna Services Ltd | Financial services | 2022 |
| Bunna Supermarket Ltd | Wholesale & retail | 2021 |
| Bunna Superstore Ltd | Wholesale & retail | 2025 |
| Bunnycare Limited | Wholesale & retail | 2021 |
| Buns N Bites Ltd | Hospitality | 2024 |
| Bunsho Ltd | Information & communication | 2025 |
| Buntingford Auto Services Limited | Wholesale & retail | 2018 |
| Buntings (Uttoxeter) Limited | Wholesale & retail | 2014 |
| Buntingville TBS Ltd | Health & social care | 2019 |
| Bunzz Ltd | Manufacturing | 2024 |
| Buonisimo Harborne Limited | Hospitality | 2024 |
| Buoyant Scope Ltd | Wholesale & retail | 2023 |
| BUR Trading Opco Realisations Limited | Wholesale & retail | 2014 |
| Bura Media Marketing Ltd | Professional & scientific | 2026 |
| Buraaq Luxury Bridal Ltd | Wholesale & retail | 2023 |
| Buranix Ltd | Wholesale & retail | 2021 |
| Buraq Foods Birmingham Ltd | Wholesale & retail | 2026 |
| Buraq Foods Limited | Manufacturing | 2021 |
| Buraq Logistics Ltd | Professional & scientific | 2022 |
| Buraq Luxury Travel Ltd | Administrative & support | 2024 |
| Buraq Traders UK Ltd | Wholesale & retail | 2018 |
| Buray Estates Ltd | Real estate | 2024 |
| Buray Group Limited | Real estate | 2018 |
| Buray Homes Ltd | Real estate | 2019 |
| Buray Horizon Limited | Real estate | 2024 |
| Buray Investments Limited | Real estate | 2017 |
| Buray Northern Investments Ltd | Real estate | 2021 |
| Buray Project Ltd | Construction | 2015 |
| Burbee Ltd | Wholesale & retail | 2025 |
| Bureau Evolution Amiante Limited | Professional & scientific | 2013 |
| Bureau Veritas Building Control UK Limited | Professional & scientific | 1997 |
| Bureau Veritas Certification UK Limited | Other services | 1988 |
| Bureau Veritas Commodities UK Limited | Professional & scientific | 2003 |
| Bureau Veritas Hs&E Limited | Extraterritorial | 1990 |
| Bureau Veritas Sustainable Construction UK Limited | Professional & scientific | 2008 |
| Bureau Veritas UK Holdings Limited | Financial services | 2005 |
| Bureau Veritas UK Limited | Professional & scientific | 1983 |
| BUREAU42 Ltd | Administrative & support | 2020 |
| Burfibites.Byfaz Ltd | Wholesale & retail | 2025 |
| Burfield Grange Management Company Limited | Households | 2016 |
| Burford Road Fish Bar Limited | Hospitality | 2019 |
| Burge Investment Holdings Limited | Construction | 2026 |
| Burger & Brew Crew Ltd | Hospitality | 2025 |
| Burger and Slice Ltd | Extraterritorial | 2023 |
| Burger and WOK Ltd | Hospitality | 2021 |
| Burger Box Ltd | Wholesale & retail | 2015 |
| Burger Box SO Ltd | Hospitality | 2024 |
| Burger Bruvas Ltd | Hospitality | 2024 |
| Burger Bruvvas Ltd | Hospitality | 2021 |
| Burger Daddy Limited | Hospitality | 2018 |
| Burger Hub Hagley Road Ltd | Hospitality | 2026 |
| Burger HUT Ltd | Hospitality | 2026 |
| Burger N Ice Ltd | Hospitality | 2023 |
| Burger ST Ltd | Hospitality | 2025 |
| Burger-Me-Up Ltd | Hospitality | 2022 |
| Burgerbae & Shakes Limited | Hospitality | 2021 |
| BURGERCAVE1 Ltd | Hospitality | 2025 |
| Burgerhouse (Arkh) Ltd | Hospitality | 2025 |
| Burgers and Sweets Ltd | Hospitality | 2025 |
| Burgess First Limited | Professional & scientific | 2025 |
| Burgess Food Limited | Hospitality | 2024 |
| Burgess Medical Ltd | Health & social care | 2023 |
| Burgos Fitness Limited | Education | 2022 |
| Burgoyne Creative Ordnance Ltd | Professional & scientific | 2015 |
| Burgui Trans Ltd | Transport & logistics | 2015 |
| Burgundies Limited | Wholesale & retail | 2022 |
| Burhani Enterprise Ltd | Real estate | 2015 |
| Burhani Logistics Ltd | Transport & logistics | 2025 |
| Burhani Suppliers Limited | Wholesale & retail | 2020 |
| Burj Fabrics Ltd | Wholesale & retail | 2024 |
| Burj Unstitch Ltd | Wholesale & retail | 2025 |
| Burke Construction Services Ltd | Construction | 2015 |
| Burke Masonry Limited | Wholesale & retail | 2001 |
| Burleton Cars Ltd | Administrative & support | 2026 |
| Burleton Services Ltd | Wholesale & retail | 2024 |
| Burley Law Limited | Professional & scientific | 2014 |
| Burlington Healthcare Ltd | Health & social care | 2015 |
| Burmar Welding Limited | | 1975 |
| Burn IT Fitness Ltd | Arts & recreation | 2010 |
| Burncon Plant Services Limited | Construction | 2025 |
| Burnea Logistics Limited | Administrative & support | 2014 |
| Burnett Brothers Catering & Events Ltd | Administrative & support | 2022 |