| Boot Property Management Ltd. | Real estate | 2017 |
| Bosman Consulting Limited | Professional & scientific | 2010 |
| Botterley Hill Farm Estates Limited | Arts & recreation | 2023 |
| Bound Commercial Limited | Real estate | 2018 |
| Bound in Fear Ltd | Arts & recreation | 2023 |
| Bowcock Cuerden LLP | | 2005 |
| Bowcock Cuerden Solicitors Limited | Professional & scientific | 1997 |
| Bower Edleston Architects Limited | Professional & scientific | 2009 |
| BPH Auction Limited | Wholesale & retail | 2021 |
| Brands Solution Holdings Limited | Financial services | 2015 |
| Bratt Limited | Information & communication | 2009 |
| Bravett Limited | Information & communication | 2023 |
| Brew in Peace Ltd | Hospitality | 2024 |
| Brian Allison Engineering Limited | Professional & scientific | 2024 |
| Brian Bennion Agricultural Limited | Administrative & support | 2017 |
| Bricc Ltd | Professional & scientific | 2024 |
| Bridge Farm Barns (Management) Co Ltd | Households | 2009 |
| Bridgemere Business Solutions Limited | Professional & scientific | 2003 |
| Bridgemere Estates Limited | Agriculture & fishing | 1987 |
| Bridgemere Mews Residents Association Limited | Other services | 2006 |
| Brindley Homes Ltd | Real estate | 2020 |
| Brine Hall Barns Residents Management Company Limited | Households | 2016 |
| Britannia Groundworks Limited | Construction | 2015 |
| Broadway Broking Group Holdings Limited | Financial services | 2023 |
| Broadway Broking Group Limited | Financial services | 2020 |
| Broker Hive Ltd | Information & communication | 2026 |
| Brook Connections Limited | Wholesale & retail | 2015 |
| Brookes Regeneration Limited | Water & waste | 2020 |
| Brooks Plant Hire Limited | Administrative & support | 2024 |
| Broomlea Farms Limited | Agriculture & fishing | 2016 |
| Broughton Farm Property Management Limited | Real estate | 2016 |
| Browns of Burwell Ltd. | Extraterritorial | 1965 |
| Broxton Park Limited | Extraterritorial | 2015 |
| Bryanson Limited | Real estate | 2002 |
| Bryter Futures Consultancy Limited | Health & social care | 2014 |
| BSV Tech Ltd | Professional & scientific | 2013 |
| Buchanan Property Renovations Limited | Real estate | 2024 |
| Buckingham Land & Property LLP | | 2023 |
| Buckland Arboriculture Limited | Agriculture & fishing | 2013 |
| Buckland Tree Care Limited | Agriculture & fishing | 2003 |
| Bucknall & Norbury Limited | Hospitality | 2023 |
| Buildbond Property Ltd | Real estate | 2026 |
| Buildbright Leads Limited | Professional & scientific | 2025 |
| Bullshift Sales Limited | Manufacturing | 2016 |
| Bunbury Hair Ltd | Other services | 2022 |
| Burland Farm Limited | Agriculture & fishing | 2010 |
| Burnapp Ltd | Information & communication | 2023 |
| Busby Marketing Services Limited | Administrative & support | 2014 |
| Butler’S Automotive Services Ltd | Wholesale & retail | 2018 |
| Butterman Ltd | Construction | 2023 |
| BW Capital Finance Ltd | Financial services | 2026 |
| C a & Sons Construction Ltd | Construction | 2024 |
| C B Refinishers Limited | Wholesale & retail | 2000 |
| C D Scarisbrick Limited | Financial services | 2025 |
| C F E Agri Ltd | Agriculture & fishing | 2022 |
| C Street Holdings Limited | Real estate | 2022 |
| C. P. & J. Davies Limited | Wholesale & retail | 2003 |
| Cage Concepts Limited | Professional & scientific | 2011 |
| Calbarrie (Cheshire) Limited | Professional & scientific | 2003 |
| Calc Solutions Limited | Information & communication | 2019 |
| Calculus Geoscience Consultants Limited | Professional & scientific | 2012 |
| Callida Freemont Limited | Administrative & support | 2013 |
| CAN Developments Ltd | Real estate | 2014 |
| Canine Thinking Ltd | Other services | 2011 |
| Capsule Collection Ltd | Wholesale & retail | 2020 |
| Captain Clean Limited | Administrative & support | 2016 |
| Car UK Productions Ltd | Information & communication | 2024 |
| Carbon Control Limited | Construction | 2007 |
| Carbon Trade UK Ltd | Professional & scientific | 2023 |
| Caresonic Ltd | Manufacturing | 2013 |
| Carlton Property Holdings Limited | Real estate | 2017 |
| Cartel Events Ltd | Arts & recreation | 2025 |
| Castle Court (Property) Limited | Construction | 2003 |
| Castle Management Property Limited | Administrative & support | 2001 |
| CBM Design Central Ltd | Administrative & support | 2018 |
| CBT Making Changes Limited | Health & social care | 2021 |
| CC Interiors Nantwich Limited | Construction | 2013 |
| CCL Exterior Cleaning Limited | Administrative & support | 2022 |
| CDB Property Services Limited | Construction | 2018 |
| CDJ AS Ltd | Construction | 2016 |
| CE Back Office Managed Services Ltd | Administrative & support | 2023 |
| CE Contracting Holdings Limited | Administrative & support | 2015 |
| CE Global Investments Ltd | Real estate | 2024 |
| CE Global Partners Limited | Administrative & support | 2015 |
| CEC Cooling Services Limited | Construction | 2025 |
| Cedar Thomas Limited | Real estate | 2017 |
| Celestial Studios Interactive Ltd | Information & communication | 2026 |
| CEM Trading Limited | Wholesale & retail | 2020 |
| Centi Safety Ltd | Construction | 2024 |
| Centre for the Advancement of Sindhis (CAS) | Health & social care | 2016 |
| Cerebral Pathways Ltd | Health & social care | 2015 |
| Cerebro Security Ltd | Information & communication | 2016 |
| CG Echo Ltd | Health & social care | 2024 |
| CGS Developments (111SS) Ltd | Real estate | 2023 |
| Chainbridge Associates Limited | Professional & scientific | 2026 |
| Chalais Estates Limited | Real estate | 2023 |
| Chalklin Investments Ltd | Financial services | 2023 |
| Chamberlain Wolfe Limited | Real estate | 2024 |
| Chantdown Limited | Professional & scientific | 2025 |
| Chantler Trading Limited | Financial services | 2016 |