| Brandhaus Trading Limited | Wholesale & retail | 2022 |
| Brandz Direct Group Limited | Wholesale & retail | 2025 |
| Brazendale Enterprises Limited | Hospitality | 2006 |
| Breathe Finance Limited | Extraterritorial | 2011 |
| Breezely Limited | Information & communication | 2025 |
| Brewing Collective Ltd | Manufacturing | 2011 |
| Briargate Limited | Real estate | 1957 |
| Briddicks Ltd | Wholesale & retail | 2017 |
| Brighouse Farms Limited | Agriculture & fishing | 2013 |
| Brighouse Homes (Nantwich) Limited | Construction | 2007 |
| Brighouse Homes (Sandbach) Limited | Construction | 2009 |
| Brighouse Investments Limited | Real estate | 2005 |
| Brighouse Plant Limited | Administrative & support | 2011 |
| Bright Star Wealth Ltd | Financial services | 2019 |
| Brighter Beginnings Day Nursery Limited | Education | 2002 |
| Brightways Concepts Limited | Wholesale & retail | 2010 |
| Brik Studios Limited | Real estate | 2025 |
| Britannia Road Developments Ltd | Real estate | 2017 |
| Broadcastmed Limited | Financial services | 2023 |
| Broadwalk Court (Notting Hill Gate) Freehold Limited | Households | 2018 |
| Brocklehurst Contractors Ltd | Administrative & support | 2012 |
| Brookfield Rose Limited | Professional & scientific | 2010 |
| Broomcroft Court Management Company Limited | Households | 2008 |
| Brown Bear Events Ltd | Administrative & support | 2022 |
| Bruce Property Holdings Ltd | Households | 2019 |
| Bryce Gryba Limited | Professional & scientific | 2025 |
| Bstar Medical Limited | Health & social care | 2022 |
| Buckles Property Consulting Ltd | Professional & scientific | 2025 |
| Bucklow Global Limited | Wholesale & retail | 2012 |
| Build Clarity Ltd | Construction | 2026 |
| Buildlogic Labs Ltd | Information & communication | 2026 |
| Bumblebee Utility Services Limited | Administrative & support | 2025 |
| Burnside Caravan Parks Holdings Limited | Financial services | 2019 |
| Burnside Caravan Parks Limited | Hospitality | 2005 |
| BUSINESS118 Ltd | Information & communication | 2023 |
| Businesslegal Ltd | Professional & scientific | 1994 |
| Businesslegal Secretaries Ltd | Extraterritorial | 2000 |
| Butt and Scholes Limited | Extraterritorial | 2025 |
| Buttons and Bells Ltd | Wholesale & retail | 2022 |
| BWR 9 Limited | Financial services | 2022 |
| BWR Gynaecology Limited | Health & social care | 2012 |
| BY Baildam Limited | Professional & scientific | 2025 |
| BY Georgina Studio Ltd | Wholesale & retail | 2026 |
| BY KSP Ltd | Professional & scientific | 2015 |
| Byrniche Poodles Ltd | Agriculture & fishing | 2025 |
| C Erison Holdings Limited | Professional & scientific | 2024 |
| C Erison Shopfitting Ltd | Construction | 2012 |
| C J M Building Contractors Ltd. | Construction | 2006 |
| C Wallace & Co Limited | Professional & scientific | 2024 |
| C. Arthur | Administrative & support | 2022 |
| C1 Digital Ltd | Professional & scientific | 2016 |
| Cacow Limited | Financial services | 2012 |
| Caddycom Limited | Arts & recreation | 2010 |
| Cadenco Limited | Real estate | 2025 |
| Cadenza Group Limited | Other services | 2025 |
| Calima Systems Limited | Information & communication | 2001 |
| Callely Collection Limited | Hospitality | 2025 |
| Caltec (ATC) Limited | Professional & scientific | 1993 |
| Calveley Management Consultants Limited | Professional & scientific | 2005 |
| Cambridge City Estates Limited | Real estate | 1999 |
| Cambridge Medical Communication Limited | Professional & scientific | 1998 |
| Cambridge Velo Limited | Wholesale & retail | 2025 |
| Cantrell Developments Limited | Real estate | 2019 |
| Canute SPC Limited | Professional & scientific | 2010 |
| Capital Nexus Investments Ltd | Professional & scientific | 2024 |
| Capsey Enterprises Ltd | Arts & recreation | 2023 |
| Car and Van Supplies Ltd | Wholesale & retail | 2023 |
| Car-Isma Cheshire Limited | Wholesale & retail | 2019 |
| Cara Property Investments Limited | Real estate | 2010 |
| Care Quality Ecosystems Ltd | Health & social care | 2018 |
| Carinio Y Construcciones Limited | Real estate | 2020 |
| Carlow Court Limited | Households | 1987 |
| Carniel Limited | Real estate | 2016 |
| Carousel Projects Digital Ltd | Information & communication | 2016 |
| Carrick Advisory Ltd | Professional & scientific | 2019 |
| Carrot Banana and Peach Clothing Company Limited | Wholesale & retail | 2001 |
| Cartmel Management Ltd | Administrative & support | 2016 |
| Casbah Fitness Ltd | Arts & recreation | 2025 |
| Cask Projects Limited | Construction | 2024 |
| Caspian Semiconductors Limited | Manufacturing | 2002 |
| Castle Electrical and Mechanical Services Limited | Construction | 2023 |
| Castle Mile Group Limited | Real estate | 1985 |
| Castleview Stud Limited | Agriculture & fishing | 2025 |
| Cat Solutions Limited | Education | 2012 |
| Catr Investments Ltd | Real estate | 2024 |
| Cavalier (Wilmslow) Ltd | Other services | 2017 |
| Cayton Properties Limited | Real estate | 2025 |
| Cbtl II Limited | Real estate | 2020 |
| Cbtl III Limited | Real estate | 2021 |
| Cbtl Limited | Real estate | 2018 |
| CCP1 Limited | Real estate | 2018 |
| Celsius (Group) Limited | Financial services | 2014 |
| Celsius Graduate Recruitment Limited | Administrative & support | 1999 |
| CFB Holdings Ltd | Real estate | 2018 |
| CFL UK Services Limited | Professional & scientific | 2018 |
| CGR AI Solutions Limited | Information & communication | 2026 |
| Chain and Conveyor Limited | Manufacturing | 2002 |
| Chains Holdings Limited | Financial services | 2026 |
| Chains Limited | Extraterritorial | 2010 |
| Chalk Dots Ltd | Wholesale & retail | 2022 |