| BJE Sports Limited | Administrative & support | 2007 |
| Black Box Property Investments Ltd | Real estate | 2004 |
| Black DOT PMI Ltd | Arts & recreation | 2003 |
| Blackwood Kitchens Ltd | Manufacturing | 2003 |
| Blakeston Builders Limited | Wholesale & retail | 1992 |
| Blinds by Design Limited | Professional & scientific | 1992 |
| Blithe House Properties Ltd | Real estate | 2025 |
| Blossom Beauty Salon (PVT) Ltd | Other services | 2024 |
| Blue Rabbit Limited | Information & communication | 1999 |
| Bluedawn Corporation Limited | Financial services | 2001 |
| Bluedome Internet Group Limited | Information & communication | 1976 |
| Bluehatch Consultancy Limited | Professional & scientific | 2006 |
| BM Handling Ltd | Wholesale & retail | 2005 |
| BMG Research Holdings Limited | Financial services | 2016 |
| BMG Research Ltd | Information & communication | 1993 |
| Bobo Social Ltd | Hospitality | 2024 |
| BODY4LIFE UK Limited | Arts & recreation | 2003 |
| Bollin Consulting Limited | Information & communication | 2007 |
| Bollin Group Limited | Professional & scientific | 1989 |
| Bollin View (Wilmslow) Residents Management Company Limited | Real estate | 2025 |
| Boone Group Holdings Limited | Professional & scientific | 1997 |
| Booth Plumbing & Heating Limited | Construction | 2005 |
| Booth Street Property Company Limited | Real estate | 2000 |
| Boots Green Properties Limited | Administrative & support | 2006 |
| Borough Care Services Limited | Health & social care | 1991 |
| Botham Medical Limited | Health & social care | 2018 |
| Boughey Distribution Limited | Transport & logistics | 1964 |
| Bown Enterprises Limited | Professional & scientific | 1989 |
| Boxer Design and Manufacturing Limited | Manufacturing | 1987 |
| Brackenhaus Limited | Construction | 1982 |
| Brainium Infotech Private Limited | Information & communication | 2024 |
| Brathay Childcare Limited | Health & social care | 2017 |
| Breeze Strategy Limited | Professional & scientific | 2005 |
| Brentmoor Thomas Limited | Information & communication | 1995 |
| Brewery Motors Ltd | Wholesale & retail | 2006 |
| Brian Sandbach Limited | Construction | 2003 |
| Bridge Farm Management Company Limited | Real estate | 2007 |
| Bridge Medtech Ltd | Information & communication | 2023 |
| Bridge Patterns Limited | Manufacturing | 2000 |
| Bridge Timber Limited | Wholesale & retail | 2002 |
| Brierley Consultants Limited | Professional & scientific | 2007 |
| Brierley Holt (Accountants) Limited | Professional & scientific | 2003 |
| Brindle Developments (Hyde) Limited | Construction | 2006 |
| Brirax Limited | Construction | 1983 |
| Briscoe's Dairy Limited | Wholesale & retail | 2002 |
| Britaly Ltd | Wholesale & retail | 2013 |
| Britannia Timber Agency Limited | Professional & scientific | 2007 |
| Broadland Fuels Limited | Professional & scientific | 1996 |
| Brompton Building Company Limited | Real estate | 1998 |
| Brooker & Co (Nantwich) Limited | Real estate | 1999 |
| Brookhouse Residential Developments Limited | Real estate | 1991 |
| Brooklands Consulting International Limited | Professional & scientific | 2000 |
| Brooklands Garage Ltd | Wholesale & retail | 1974 |
| Brooklands MOT & Service Centre Ltd | Wholesale & retail | 2024 |
| Broome Chiropody Ltd | Health & social care | 2003 |
| Brophy Mcpaul Limited | Professional & scientific | 2001 |
| Brown Mcdonald Ltd | Professional & scientific | 2024 |
| Browns Congleton Limited | Wholesale & retail | 2003 |
| Broxton Gates Limited | Wholesale & retail | 2002 |
| Bryant Properties (Stockport) Limited | Real estate | 1999 |
| Bubacah Ltd | Professional & scientific | 2025 |
| Buckhurst Bulgaria Limited | Professional & scientific | 2005 |
| Build for Your Future Ltd | Real estate | 2018 |
| Building Sciences Limited | Professional & scientific | 1986 |
| Building Technology Systems Limited | Manufacturing | 1996 |
| Burg N Ice Ltd | Hospitality | 2022 |
| Burghley Compliance Consultants Limited | Professional & scientific | 2020 |
| Burnbeam Limited | Construction | 1974 |
| Burrows Plumbing Limited | Construction | 2002 |
| Burton Beavan Limited | Professional & scientific | 2000 |
| Burton Mccall (Industrial) Limited | Extraterritorial | 1970 |
| Burtonmere Ltd | Professional & scientific | 2003 |
| Buxton Accounting LLP | | 2004 |
| Buyascale Limited | Wholesale & retail | 2005 |
| BW Clifton Ltd | Transport & logistics | 1998 |
| Byprem Ltd | Extraterritorial | 2003 |
| Byrom Consultants Limited | Administrative & support | 1999 |
| Byrom Public Limited Company | Professional & scientific | 1991 |
| C a Parton Ltd | Other services | 2025 |
| C a Russell Limited | Wholesale & retail | 2004 |
| C D I Electrical Contractors Limited | Construction | 2003 |
| C Perrin Engineering Limited | Construction | 2017 |
| C W G Transport Limited | Transport & logistics | 2002 |
| C-Suite Partners Ltd | Professional & scientific | 2016 |
| C. J. Antiques Limited | Wholesale & retail | 2003 |
| C.C.D. (Crewe) Limited | | 1989 |
| C.E. Caldwell (Norlands Farm) Limited | Agriculture & fishing | 1954 |
| C.F. Airflow Limited | Wholesale & retail | 1993 |
| C.H.Moody & SON Limited | Wholesale & retail | 1950 |
| C.I.L. Geotechnics Limited | Professional & scientific | 2004 |
| C.I.S.E. UK Limited | Professional & scientific | 2002 |
| C.J.D. Systems Limited | Information & communication | 1990 |
| C.L.Davies Limited | Wholesale & retail | 1960 |
| C.L.S. Group Limited | Wholesale & retail | 1977 |
| C.R. Civil Engineering Limited | Construction | 2000 |
| Caldo Fuel OIL Limited | Wholesale & retail | 1936 |
| Caldwells Limited | Professional & scientific | 1893 |
| Cambel Tech Limited | Professional & scientific | 1999 |
| Cambridge Tent Company Limited | Administrative & support | 2015 |
| Campbell Andrews Consulting Ltd | Professional & scientific | 2022 |