| B B Building Services (Yorkshire) Ltd | Construction | 2022 |
| B B Erections Limited | Construction | 2004 |
| B B Essentials Limited | Wholesale & retail | 2025 |
| B B H Barrand Ltd | Wholesale & retail | 1986 |
| B Burton Innovations Ltd | Construction | 2025 |
| B Cloud Solution Ltd | Information & communication | 2019 |
| B D Jones Management Limited | Households | 1981 |
| B D Trans Ltd | Transport & logistics | 2020 |
| B Detailed Property Ltd | Real estate | 2022 |
| B G Decoratoring Limited | Construction | 2026 |
| B H Electrical Services Ltd | Construction | 2019 |
| B H Hair Extensions Limited | Other services | 2019 |
| B H Hotels 2 Ltd | Extraterritorial | 2016 |
| B H Hotels 3 Ltd | Extraterritorial | 2018 |
| B H Hotels Ltd | Financial services | 2016 |
| B H Hotels Topco Ltd | Financial services | 2025 |
| B I Halder & SON Limited | Transport & logistics | 2001 |
| B Living Products Ltd | Wholesale & retail | 2024 |
| B Louis Labour Force & Contractors Ltd | Construction | 2015 |
| B Lucky Transport Limited | Transport & logistics | 2017 |
| B M Property Sourcing LLP | | 2016 |
| B P Grace Limited | Professional & scientific | 1980 |
| B R Properties (Leeds) Ltd | Real estate | 2026 |
| B Rhodes Management Ltd | Information & communication | 2019 |
| B S Services Yorkshire Ltd | Construction | 2025 |
| B Singh Property Ltd | Real estate | 2024 |
| B Smart Auto Centre Ltd | Wholesale & retail | 2011 |
| B Smart Consultants Limited | Professional & scientific | 2025 |
| B Squared Design Ltd | Professional & scientific | 2016 |
| B Store 8 Ltd | Wholesale & retail | 2025 |
| B Turner Landscapes Ltd | Wholesale & retail | 2018 |
| B W Emsley Limited | Construction | 2026 |
| B W Machinery Ltd | Manufacturing | 2013 |
| B Wellness Ltd | Extraterritorial | 2019 |
| B&A Construction Group Ltd | Construction | 2017 |
| B&A Project Management (Leeds) Ltd | Professional & scientific | 2018 |
| B&B Flow Ltd | Transport & logistics | 2026 |
| B&B Leeds Ltd | Hospitality | 2026 |
| B&C Barbering Company Ltd | Other services | 2026 |
| B&C Business Limited | Wholesale & retail | 2017 |
| B&C Professional Cleaning Ltd | Administrative & support | 2019 |
| B&D Removals Ltd | Transport & logistics | 2024 |
| B&D Tiling Limited | Manufacturing | 2025 |
| B&E Exquisite Ltd | Manufacturing | 2026 |
| B&F North Construction Ltd | Construction | 2026 |
| B&I Group Ltd | Real estate | 2022 |
| B&I Property Maintenance Ltd | Real estate | 2025 |
| B&J Cafe Ltd | Hospitality | 2020 |
| B&K Leeds Limited | Wholesale & retail | 2021 |
| B&K Salon Limited | Other services | 2024 |
| B&K Services Ltd | Wholesale & retail | 2026 |
| B&L Speed Transport Ltd | Transport & logistics | 2025 |
| B&P Surveying Limited | Professional & scientific | 2025 |
| B&R Consultancy Leeds Ltd | Professional & scientific | 2019 |
| B&S D Ltd | Wholesale & retail | 2013 |
| B&S Jemmett-Smith Ltd | Professional & scientific | 2021 |
| B&V Trading Limited | Real estate | 2018 |
| B&Z Holdings Ltd | Real estate | 2026 |
| B-Bridge Associates Ltd | Professional & scientific | 2023 |
| B-J Construction (Ceramics) Limited | | 1969 |
| B-Works Ltd | Professional & scientific | 2022 |
| B. & C. Car Parts Limited | Wholesale & retail | 1991 |
| B. Gallagher Construction Ltd | Construction | 2002 |
| B. Gallagher Trustee Limited | Financial services | 2023 |
| B.& D.Keightley,Limited | Wholesale & retail | 1957 |
| B.A.W. Catering Limited | Hospitality | 1996 |
| B.Ansbro Ltd | Transport & logistics | 2026 |
| B.Bukhari Investments Ltd | Real estate | 2018 |
| B.C.G Solutions Ltd | Construction | 2024 |
| B.C.S. Electrics (Holdings) Limited | Administrative & support | 2009 |
| B.M. Car Parks Limited | Other services | 2009 |
| B.M.A Hair Design Ltd | Other services | 2012 |
| B.Motion Music Ltd | Arts & recreation | 2015 |
| B.O.M. Light Engineering Limited | Manufacturing | 1973 |
| B.Planning Ltd | Professional & scientific | 2024 |
| B.R Roofing & SON Ltd | Construction | 2025 |
| B.R. Pharmaceuticals Limited | Wholesale & retail | 1996 |
| B.Webber Holdings Limited | Real estate | 1971 |
| B1 Aviation Ltd | Manufacturing | 2024 |
| B18 Limited | Administrative & support | 2005 |
| B2 Agency Limited | Information & communication | 2023 |
| B22GRILL Ltd | Hospitality | 2019 |
| B24 Digital Limited | Information & communication | 2023 |
| B2B Contracts Ltd | Administrative & support | 2013 |
| B2BPROS Ltd | Wholesale & retail | 2026 |
| B2I General Trading Ltd | Wholesale & retail | 2020 |
| B3 Electrical Ltd | Construction | 2022 |
| B3 Management Limited | Financial services | 2013 |
| B3.CO.UK. Limited | Professional & scientific | 1998 |
| B3BURGESS Limited | Professional & scientific | 1998 |
| B6M Ltd | Professional & scientific | 2022 |
| BA Baron Limited | Professional & scientific | 2017 |
| BA Carpentry Ltd | Manufacturing | 2021 |
| BA Financial Services Ltd | Financial services | 2020 |
| BA Firm Limited | Information & communication | 2026 |
| BA Telecommunications Ltd | Information & communication | 2019 |
| BA Threads Ltd | Information & communication | 2014 |
| BA1 Consultants Ltd | Professional & scientific | 2025 |
| BAA Lynton Limited | Construction | 1997 |
| Baabulilm Investments Ltd | Real estate | 2021 |