| Blueboat Support & Training Services CIC | Public administration | 2026 |
| Blueboat Training Services Ltd | Other services | 2020 |
| Bluehoop Digital Limited | Information & communication | 2012 |
| Blueprint for Land and Property Limited | Real estate | 2021 |
| Bmse Ltd | Professional & scientific | 2025 |
| Boddington Coaching & Consulting Limited | Professional & scientific | 2019 |
| Bodumas Gallery Ltd | Arts & recreation | 2023 |
| Body & Soul Assistance Limited | Other services | 2006 |
| Bold GRP Ltd | Information & communication | 2024 |
| Bolland Medical Services Ltd | Professional & scientific | 2023 |
| Bolling Management Ltd | Households | 2023 |
| Bolling Road Management Company (Ilkley) Limited | Households | 1995 |
| Bolsover Investments | Financial services | 2015 |
| Bolton Court Management Company (Silsden) Limited | Households | 2004 |
| BON DIA Ltd | Wholesale & retail | 2024 |
| Bonbonne Limited | Households | 2022 |
| Booking JSV Limited | Extraterritorial | 2014 |
| Boost Your Health Limited | Wholesale & retail | 2025 |
| Bordley Properties Limited | Real estate | 2020 |
| Borro Ltd | Professional & scientific | 2024 |
| Boultons Harrisons Limited | Real estate | 1998 |
| Box 500 Ltd | Real estate | 2025 |
| BPL Sports Ltd | Education | 2025 |
| BR Hallworth Ltd | Professional & scientific | 2009 |
| Bradford & Leeds Properties Ltd | Extraterritorial | 1965 |
| Bradford and Leeds (Commercial Properties) Limited | Construction | 1987 |
| Bradford and Leeds (Residential) Limited | Construction | 1924 |
| Bradford Chess Centre Limited | Arts & recreation | 2020 |
| Bradley Mill Management Company Limited | Households | 2005 |
| Braithwaites Yorkshire Ltd | Professional & scientific | 2020 |
| Bramhope Beauty Group Ltd | Other services | 2022 |
| Branksome Partners Limited | Professional & scientific | 2015 |
| Branshaw Limited | Extraterritorial | 1965 |
| Brewery TAP (Idle) Limited | Hospitality | 2017 |
| Brewz Bar Limited | Wholesale & retail | 2019 |
| Bridgcap 2 Limited | Real estate | 2018 |
| Bridgcap Developments Limited | Construction | 2021 |
| Bridge Bistro Ltd | Hospitality | 2024 |
| Bridge Cars Limited | Transport & logistics | 2004 |
| Bridge House (Keighley) LLP | | 2004 |
| Bridge Stoves Ltd | Administrative & support | 2017 |
| Bright Future Financial Planning Limited | Financial services | 2015 |
| Bright Futures Education Consultancy Ltd | Education | 2014 |
| Bright Laundry Services Ltd | Administrative & support | 2018 |
| Brightblack Productions Ltd | Information & communication | 2019 |
| Brindley Mill (Skipton) Management Company Limited | Households | 1999 |
| Brio Digital Ltd | Administrative & support | 2020 |
| Briscoe Developments Limited | Construction | 2017 |
| Brite Safety Solutions Limited | Construction | 2018 |
| Broadleaf Estates Ltd | Real estate | 2016 |
| Brockhole Properties Limited | Real estate | 2018 |
| Brokerlink Limited | Extraterritorial | 1999 |
| Brooks Court Management (Addingham) Limited | Households | 1992 |
| Brooks Rayner | Financial services | 2018 |
| Brosnans Limited | Professional & scientific | 2003 |
| Brotherhood B23 Ltd | Other services | 2026 |
| Brown Gordon Consulting Limited | Administrative & support | 2012 |
| Brunswick Investments Ltd | Real estate | 2025 |
| Bryony Johnson Pro Performance Chef Limited | Hospitality | 2021 |
| Bsae Ltd | Real estate | 2023 |
| Buchan Hill Limited | Professional & scientific | 2012 |
| Buckingham Mercantile Limited | Real estate | 2018 |
| Builders Choice Ltd | Manufacturing | 2019 |
| Building Material Suppliers Ltd | Wholesale & retail | 2014 |
| Building Plastics Centre Limited | Wholesale & retail | 2014 |
| Burgerz N Brewz Ltd | Hospitality | 2019 |
| Burghley-Elwick Associates Limited | Real estate | 1971 |
| Burles & Co Mentor Coach Consult Ltd | Administrative & support | 2020 |
| Burley Developments Group Limited | Construction | 2009 |
| Burley Developments Limited | Construction | 1996 |
| Burley Holdings Limited | Extraterritorial | 2006 |
| Burley House Management Company Limited | Households | 2018 |
| Burley Interiors Ltd | Construction | 2019 |
| Burley Interiors Manufacturing Ltd | Manufacturing | 2024 |
| Burley Kitchen Limited | Hospitality | 2025 |
| Burley Main Street Management Company Ltd | Real estate | 2022 |
| Burley Nursery School Limited | Education | 2015 |
| Burley Technical Installations Limited | Construction | 2015 |
| Business FIX Limited | Administrative & support | 2024 |
| Business Money Saving Experts Ltd | Professional & scientific | 2021 |
| Business Rescue by Bizsave Ltd | Financial services | 2025 |
| Buzzlogic Limited | Professional & scientific | 2016 |
| C W Jones & Co | Financial services | 2005 |
| C.A. Pritchard Limited | Other services | 2003 |
| C.J.D. Properties (Bradford) Limited | Real estate | 1987 |
| Cablesense UK Ltd | Real estate | 2025 |
| Cactus Backup Limited | Information & communication | 2010 |
| Caddick Wright Electrical and Renewables Ltd | Construction | 2026 |
| Cafe J Limited | Hospitality | 2017 |
| Call Convert Ltd | Professional & scientific | 2024 |
| Callum Williams Motorsport Ltd | Professional & scientific | 2024 |
| Cameron Inventories Ltd | Administrative & support | 2013 |
| Camtheo Consulting Ltd | Professional & scientific | 2013 |
| CAN (Newcastle) Ltd | Hospitality | 2017 |
| Canna Botanics Limited | Wholesale & retail | 2018 |
| Canny Beds Ltd | Wholesale & retail | 2008 |
| Canny Candy Ltd | Wholesale & retail | 2022 |
| Cant Properties Limited | Real estate | 2021 |
| Capstone North Ltd | Construction | 2021 |
| Cara Barrett Ltd | Education | 2015 |