| BSK Discount Wholesale Limited | Wholesale & retail | 2023 |
| BSK Roofworks Ltd | Construction | 2025 |
| BSO Shisha's Ltd | Wholesale & retail | 2020 |
| BSP Enterprises UK Ltd | Construction | 2010 |
| Bssp Holdings Ltd | Financial services | 2021 |
| BST Group Ltd | Real estate | 2026 |
| BST Lettings Ltd | Real estate | 2024 |
| Bsure Limited | Wholesale & retail | 2019 |
| BSW Properties Limited | Real estate | 2018 |
| BSX66 Limited | Hospitality | 2024 |
| BT Bargains Ltd | Wholesale & retail | 2023 |
| BT Bradford Ltd | Hospitality | 2023 |
| BT05CAD Ltd | Arts & recreation | 2025 |
| Btblearning Ltd | Education | 2024 |
| Btfy Ltd | Public administration | 2022 |
| BTI Bradford Ltd | Hospitality | 2024 |
| BTL Partners Limited | Real estate | 2023 |
| Btree Technologies Limited | Information & communication | 2025 |
| Bttc Limited | Wholesale & retail | 2015 |
| Buat Makanan Ltd | Other services | 2024 |
| Bubble Bounce Gym Ltd | Administrative & support | 2025 |
| Bubbles & Hops Ltd | Hospitality | 2025 |
| Buckinghams Bar Limited | Hospitality | 2016 |
| Bucknor Health Limited | Public administration | 2024 |
| Budai Traders Ltd | Wholesale & retail | 2025 |
| Budddy and Co Ltd | Wholesale & retail | 2022 |
| Budget Car Sales Ltd | Wholesale & retail | 2026 |
| Budget Day Tours Ltd | Administrative & support | 2024 |
| Budget Mall Ltd | Wholesale & retail | 2025 |
| Budget Paving Limited | Administrative & support | 2021 |
| Budgetgrip Ltd | Wholesale & retail | 2026 |
| Budh Limited | Wholesale & retail | 2024 |
| Budi Importers Limited | Wholesale & retail | 2021 |
| Buffrock LLP | | 2009 |
| Buffy’S Stuff Ltd | Wholesale & retail | 2025 |
| Bugatti Hire Ltd | Administrative & support | 2026 |
| Bugg-Ease Limited | Wholesale & retail | 2019 |
| BUI Pasha Ltd | Wholesale & retail | 2023 |
| Buiding and Civil Engineering Ltd | Construction | 2025 |
| Build a Body Ltd | Health & social care | 2025 |
| Build a Girl UK CIC | Education | 2020 |
| Buildcare Real Estate Ltd | Construction | 2026 |
| Building & Electrical Installations Ltd | Construction | 2017 |
| Building Bradford CIC | Health & social care | 2025 |
| Building Church Limited | Other services | 2016 |
| Building Energy Control Solutions Limited | Manufacturing | 2010 |
| Building Integrated Spaces Ltd | Construction | 2019 |
| Building Resilience in Children and Communities Limited | Health & social care | 2023 |
| Buildme Limited | Information & communication | 2022 |
| Built Construction & Developments Ltd | Construction | 2025 |
| Built From This CIC | Education | 2025 |
| Built Properties Ltd | Real estate | 2025 |
| Built to Last Estates Ltd | Real estate | 2026 |
| Built UP Roofing Systems Limited | Construction | 2016 |
| Builtrenew Ltd | Construction | 2025 |
| Bukhari Superstore Ltd | Wholesale & retail | 2025 |
| Bukka Haus Limited | Hospitality | 2026 |
| Bulk and Best Limited | Wholesale & retail | 2023 |
| Bull Prime Services Ltd | Administrative & support | 2025 |
| Bulldog Security Limited | Administrative & support | 2010 |
| Bullion House Ltd | Administrative & support | 2017 |
| Bullock Enterprises (Yorkshire) Limited | Hospitality | 2021 |
| Bulmer & Lumb Estates Limited | Real estate | 2023 |
| Bulmer & Lumb Fabrics Limited | Extraterritorial | 1982 |
| Bulmer & Lumb Group Limited | Manufacturing | 2001 |
| Bulmer & Lumb Holdings Limited | Professional & scientific | 2015 |
| Bulmer & Lumb Investments Limited | Extraterritorial | 2005 |
| Bulmer & Lumb Limited | Extraterritorial | 2001 |
| Bulmer & Lumb Package Dyers Limited | Extraterritorial | 1982 |
| Bulmer & Lumb Property Limited | Real estate | 2024 |
| Bulmer & Lumb Top Dyers Limited | Extraterritorial | 1982 |
| Bulmer & Lumb Trading Limited | Real estate | 2023 |
| Bumpers Direct Ltd | Wholesale & retail | 2026 |
| Bumpkin Leisure Ltd | Hospitality | 2018 |
| BUN BUN Ltd | Hospitality | 2021 |
| Buncad Care Services Ltd | Health & social care | 2022 |
| Bundoo Khan Bradford Ltd | Hospitality | 2026 |
| Bunkers Bar & Lounge Limited | Hospitality | 2024 |
| Bunkout Homes Ltd | Construction | 2019 |
| Buns&Shakes Ltd | Hospitality | 2020 |
| Bunton Civil & Construction Limited | Construction | 2017 |
| Bunton Plant Hire Limited | Financial services | 2011 |
| Bunz Burger Ltd | Hospitality | 2024 |
| Buraca Ltd | Hospitality | 2023 |
| Buraq Global Aviation Support Ltd. | Wholesale & retail | 2016 |
| Buraq&Co Ltd | Wholesale & retail | 2024 |
| Burg-Wachter UK (Holdings) Limited | Wholesale & retail | 2005 |
| Burg-Wachter UK Limited | Wholesale & retail | 1987 |
| Burger Beatz BD9 Ltd | Hospitality | 2023 |
| Burger Beyy BFD Ltd | Hospitality | 2022 |
| Burger BOY Limited | Hospitality | 2022 |
| Burger District Limited | Hospitality | 2026 |
| Burgess Property Management Limited | Real estate | 2021 |
| Burhan Pharma Ltd | Health & social care | 2024 |
| Burhani Investments Ltd | Real estate | 2023 |
| Burhani Ltd | Health & social care | 2016 |
| Burhani Optics Limited | Health & social care | 2019 |
| Burlington Orthopaedics Limited | Health & social care | 2010 |
| Burmar Fabrications Ltd | Manufacturing | 2005 |
| Burnell Hewitt Group LLP | | 2017 |