| Bradley Barns Limited | Education | 2015 |
| Brambles Homes Limited | Real estate | 2022 |
| Bramblewood Leisure Limited | Hospitality | 2017 |
| Brava Finishes Limited | Information & communication | 2022 |
| Bridge Brand Consultancy Limited | Professional & scientific | 2020 |
| Bridge Carpets & Flooring Limited | Wholesale & retail | 2016 |
| Bridgemere Holdings Limited | Financial services | 1993 |
| Bridgemere Tractors Limited | Wholesale & retail | 1992 |
| Brightside Rooms Ltd | Hospitality | 2023 |
| Brilliant Flooring Ltd | Construction | 2025 |
| Brimstage Manor Limited | Health & social care | 2022 |
| Britannia Europe Property Holdings Ltd | Construction | 2024 |
| Broad Oak Motors Limited | Extraterritorial | 2024 |
| Broadhay Eggs Ltd | Agriculture & fishing | 2010 |
| Brock and Norris Limited | Manufacturing | 2012 |
| Brockhampton Propco Limited | Real estate | 2025 |
| Brogan Brows Limited | Other services | 2021 |
| Brogan Buckley Limited | Administrative & support | 2024 |
| Broody Holdings Limited | Professional & scientific | 2015 |
| Brooklands Autocraft Limited | Wholesale & retail | 2021 |
| Brookside Court Residence RTM Company Ltd | Households | 2018 |
| Bruneval Building Materials Limited | Construction | 2017 |
| Bubney Farms Holding Ltd | Financial services | 2023 |
| Bucks Kitchens and Bathrooms Limited | Construction | 2022 |
| Buildtrace Limited | Professional & scientific | 2021 |
| Bulk Feed Systems Ltd | Manufacturing | 2020 |
| Bulwell Propco Limited | Real estate | 2025 |
| Burn Callander Company Limited | Real estate | 2009 |
| Business Growth Global Limited | Wholesale & retail | 2021 |
| Business Technology Investment Ltd | Information & communication | 2009 |
| Butter Solutions Limited | Extraterritorial | 2026 |
| Byron Blinds Limited | Construction | 2021 |
| C 'N' M Motors Ltd | Wholesale & retail | 2021 |
| C Bebbington Limited | Administrative & support | 2021 |
| C Lowe Farriers Ltd | Agriculture & fishing | 2023 |
| C R Simpson Ltd | Financial services | 2015 |
| C.F. Collins Solutions Ltd | Construction | 2019 |
| CA23 Consulting Ltd | Professional & scientific | 2021 |
| Cadstones Holdings Limited | Professional & scientific | 2025 |
| Calibra UK Ltd | Wholesale & retail | 2021 |
| Calis Homes Limited | Real estate | 2024 |
| Call Serve Limited | Administrative & support | 2002 |
| Call Serve.Com Limited | Administrative & support | 2001 |
| Camel GEN Limited | Agriculture & fishing | 2024 |
| Candia Soft Ltd | Information & communication | 2021 |
| Canine Care Hub Ltd | Education | 2020 |
| Cappar Ltd | Hospitality | 2024 |
| Capture Carbon Limited | Professional & scientific | 2013 |
| Capture Carbon Solutions Limited | Other services | 2018 |
| Carden Capital Ltd | Households | 2023 |
| Carden Homes Limited | Real estate | 2021 |
| Carden Property Holdings Limited | Real estate | 2012 |
| Cardiff City Development Limited | Construction | 2006 |
| Cardinal Couriers Ltd | Transport & logistics | 2010 |
| Care Resource Bureau Ltd. | Health & social care | 2014 |
| Carl Allen Associates Limited | Professional & scientific | 2017 |
| Carpentry House Ltd | Administrative & support | 2017 |
| Cartley Developments Ltd. | Construction | 2008 |
| Carvango Limited | Wholesale & retail | 2024 |
| Cashin & Company (UK) Limited | Professional & scientific | 2017 |
| CC Agriculture Ltd | Wholesale & retail | 2021 |
| CDD Partnership LLP | | 2018 |
| Central Cropsprayers Limited | Wholesale & retail | 2007 |
| CFC Canine Ltd | Other services | 2026 |
| CFW Renewables Ltd | Professional & scientific | 2019 |
| CG Johnson Enterprise Ltd | Construction | 2023 |
| Cgcuk Ltd | Manufacturing | 2025 |
| CGW Cheshire Properties Ltd | Real estate | 2019 |
| Chalet White Limited | Arts & recreation | 2016 |
| Challenger Tractor Pulling Limited | Arts & recreation | 2025 |
| Chalm Consulting Ltd | Professional & scientific | 2011 |
| Chambers Estate Agents (Cardiff) Limited | Real estate | 2019 |
| Chan Medical Solutions Limited | Health & social care | 2013 |
| Charlie Watson Consultancy Limited | Professional & scientific | 2025 |
| Chase Enterprise (Whitchurch) Limited | Construction | 2013 |
| Cheese and Cracker Productions Ltd | Information & communication | 2017 |
| Cheese Solutions Ltd. | Manufacturing | 2016 |
| Cherrington Planning Limited | Professional & scientific | 2010 |
| Cherrington Rural Developments Ltd | Financial services | 2021 |
| Ches & Sons Limited | Construction | 2025 |
| Cheshire Game Ltd | Agriculture & fishing | 2014 |
| Cheshire Game Supplies Limited | Extraterritorial | 2002 |
| Cheshire Prestige Paintworks Limited | Wholesale & retail | 2021 |
| Chester Propco Limited | Real estate | 2025 |
| Children, Justice and Peace Global CIC | Health & social care | 2025 |
| Chimera Product Services Limited | Professional & scientific | 2003 |
| Chocolate Chip Limited | Transport & logistics | 2006 |
| Chroma Property Development and Management Limited | Real estate | 2023 |
| Chroma Scenery and Construction Ltd | Administrative & support | 2017 |
| Church Farm Calverhall Management Company Limited | Real estate | 2020 |
| Church View Meadows Management Ltd | Households | 1996 |
| Churton Homes Limited | Construction | 2013 |
| CIP Associates Ltd | Education | 2025 |
| Cirrus Integrated Management Ltd | Professional & scientific | 2005 |
| Clacy's Garage Limited | Wholesale & retail | 2004 |
| Claims Management Support Limited | Administrative & support | 2023 |
| Clanville Draintech Limited | Construction | 2013 |
| Clappison & Co Ltd | Administrative & support | 2020 |
| Clare Saunders Limited | Professional & scientific | 2014 |
| Clarity Hospitality Limited | Professional & scientific | 2023 |