| Beable Properties Limited | Real estate | 1984 |
| Beau Monde Perfumery Limited | Other services | 2003 |
| BEC Navigation Limited | Manufacturing | 2005 |
| Beck Foot Mill Management Company Limited | Households | 2004 |
| Beck Mechanical Services Limited | Construction | 2006 |
| Bedside Manor Limited | Wholesale & retail | 2005 |
| Beeston Motor Spares Limited | Wholesale & retail | 2004 |
| Belfar Ltd. | Manufacturing | 1999 |
| Bellow Enterprises Limited | Wholesale & retail | 1983 |
| Bellow Holdings Limited | Professional & scientific | 1999 |
| Bellow Properties Limited | Real estate | 1950 |
| Belmont Design Services Limited | Professional & scientific | 2007 |
| Belvedere ASH Limited | Financial services | 2026 |
| Benson Business Services Limited | Professional & scientific | 2005 |
| Benvic Dugdale Limited | Manufacturing | 2000 |
| Bestcard Limited | Professional & scientific | 1995 |
| Bhullar Limited | Professional & scientific | 2005 |
| Big Pete Limited | Arts & recreation | 2004 |
| Bill Dyson Skip Hire & Waste Management Limited | Other services | 2003 |
| Bill Hargreaves Cycles Ltd. | Wholesale & retail | 1949 |
| Bingley Roofing Contractors Limited | Construction | 2003 |
| Binntex Limited | Professional & scientific | 2004 |
| Bishopcraft Limited | Construction | 1989 |
| Blades Emporium Limited | Other services | 2004 |
| Blakepoint Limited | Manufacturing | 2002 |
| Blinds 2000 Ltd | Manufacturing | 2006 |
| Blue Chip Data Systems Limited | Information & communication | 1992 |
| Blue Residential (Guiseley) Limited | Real estate | 2004 |
| Blue Valley Investments Limited | Administrative & support | 1997 |
| Bluegales Solutions Ltd | Wholesale & retail | 2025 |
| Bluemoose Books Ltd | Information & communication | 2005 |
| Bluenorizon Projects Ltd | Wholesale & retail | 2025 |
| BN Electrical Contractors Limited | Construction | 2007 |
| Bolcormar Limited | Transport & logistics | 2001 |
| Bolsterstone (Stockport) Limited | Construction | 2006 |
| Bona (UK) Limited | | 1991 |
| Bongo Master Restaurant and Bar Ltd | Hospitality | 2022 |
| Bonham Electrical Ltd | Construction | 2005 |
| Boseri Ltd | Information & communication | 2007 |
| Boston Computing Solutions Limited | Information & communication | 2007 |
| Boulton Dental Laboratories Limited | Health & social care | 2005 |
| Bower Green (Shipping & Forwarding) Limited | Professional & scientific | 1986 |
| Bower Green Limited | Transport & logistics | 1997 |
| Bower Green Warehousing Limited | Extraterritorial | 1966 |
| Bower Roebuck & Co.,Limited | Manufacturing | 1899 |
| BPM Phoenix Limited | Professional & scientific | 2001 |
| Bradford Arena Services Limited | Wholesale & retail | 1996 |
| Bradford Cyrenians Limited | Hospitality | 1972 |
| Bradford Grinders (U.K.) Limited | Professional & scientific | 1973 |
| Bradford Ice Arena Limited | Extraterritorial | 1996 |
| Bradford Resource Centre Limited | Health & social care | 1984 |
| Bradford Sporting Association Limited | Arts & recreation | 2006 |
| Bradford Supported Housing Limited | Other services | 2000 |
| Bradford Tool Group Limited | Manufacturing | 2023 |
| Bradford Welding and Sheet Metal Company Limited | Manufacturing | 1981 |
| Bradiancestech Ltd | Wholesale & retail | 2025 |
| Brafferton Hall Gardens Properties Ltd | Construction | 1995 |
| Bramley Business Park Limited | Real estate | 2001 |
| Branson Investments Limited | Real estate | 1998 |
| Branstone B Limited | Real estate | 2000 |
| Brearleys of Stanley Limited | Real estate | 2006 |
| Breece Limited | Hospitality | 2007 |
| Brian Widdop Pallets Limited | Manufacturing | 2007 |
| Briar Gant Developments Limited | Construction | 2007 |
| Brickwood Enterprises Ltd | Construction | 2006 |
| Bridge Economics Limited | Professional & scientific | 2004 |
| Bridge END House Nursery Limited | Health & social care | 2004 |
| Bridge Mill Autos Limited | Wholesale & retail | 1987 |
| Bridge Project(The) | Real estate | 1985 |
| Bridgeplan Limited | Construction | 2000 |
| Briggs Burners (Holdings) Limited | Financial services | 1999 |
| Brighouse Motorcycle Training Centre Limited | Administrative & support | 2002 |
| Brighouse Veterinary Centre Limited | Professional & scientific | 2006 |
| Bright Fair Education Ltd | Education | 2026 |
| Bright Futures Nursery Harehills Limited | Health & social care | 2023 |
| Brimor Property Ltd | Extraterritorial | 2006 |
| British Bung Manufacturing Company Limited(The) | Manufacturing | 1978 |
| Broadbent Customer Services Limited | Manufacturing | 1965 |
| Broadoak Childrens Nursery Association | Health & social care | 1988 |
| Brogan Business Park Limited | Real estate | 2003 |
| Brown Bros. Properties Limited | Real estate | 2002 |
| Brown's(Precision Engineers)Christchurch Limited | Construction | 1965 |
| Bruton's Limited | Manufacturing | 1998 |
| BTU GAS Services Limited | Construction | 2006 |
| Buckingham (Bucks Opco) Limited | Health & social care | 2019 |
| Buckingham (Malvern Opco) Limited | Construction | 2019 |
| Buckingham Lace Hill (Brisbane Parent) Limited | Professional & scientific | 2019 |
| Buckingham Lace Hill Limited | Professional & scientific | 2019 |
| Bullcliff Ltd | Professional & scientific | 2000 |
| Bulldog Design Limited | Professional & scientific | 1975 |
| Bullrock Evergreen Ltd | Information & communication | 2021 |
| Burbank Produce Limited | Hospitality | 2001 |
| Burgan Family Holdings Limited | Professional & scientific | 2022 |
| Business of the Month Limited | Extraterritorial | 2006 |
| Business of the Year Limited | Extraterritorial | 2006 |
| Butterfield Sign Service Limited | Manufacturing | 1976 |
| Button Systems Limited | Professional & scientific | 1998 |
| Bywell Store Limited | Wholesale & retail | 2004 |
| C & D Property Developments Limited | Professional & scientific | 2003 |
| C V Graphics Limited | Manufacturing | 2006 |