| C&C Property Investment and Management Limited | Real estate | 2024 |
| C&N Scaffolding & Building Specialists Ltd | Construction | 2025 |
| C-Jaccs Ltd | Construction | 2019 |
| C. Baldwin & Sons Limited | Agriculture & fishing | 1985 |
| C.J. Accountancy Limited | Professional & scientific | 2002 |
| C.Lorro Site Services Ltd | Construction | 2020 |
| C.M. Hesford & Company Limited | Wholesale & retail | 1930 |
| C1 Property Limited | Real estate | 2020 |
| Caas Lettings Ltd | Real estate | 2026 |
| Cabalie Jones Construction Ltd | Construction | 2023 |
| Cabalie Jones Holdings Ltd | Construction | 2024 |
| Cabalie Jones Plant Ltd | Construction | 2026 |
| Cabello Property Ltd | Real estate | 2022 |
| Cain Builders Limited | Real estate | 2020 |
| Cakie Baker Ltd | Wholesale & retail | 2019 |
| Caldy Mechanical Services Ltd | Construction | 2014 |
| Calibre Tiling Limited | Construction | 2022 |
| Calmer Canines Ltd | Other services | 2023 |
| Camel Business Solutions Ltd | Administrative & support | 2025 |
| Caminc Pubco Limited | Information & communication | 2023 |
| Canal Cruise Lancashire Ltd | Transport & logistics | 2020 |
| Cane & Table Limited | Wholesale & retail | 2004 |
| CANMPERZ4HIRE Ltd | Wholesale & retail | 2026 |
| Capero Enterprises Ltd | Wholesale & retail | 2025 |
| Capilano Consultants (NW) Ltd | Administrative & support | 2025 |
| Caravans and Lodges Limited | Hospitality | 2024 |
| Carbon CAN Company (UK) Ltd | Manufacturing | 2017 |
| Carbon Converters Ltd | Agriculture & fishing | 2025 |
| Carbon Incorporated Ltd | Professional & scientific | 2021 |
| Carbon Neutral Salvage Solutions Limited | Manufacturing | 2024 |
| Care Surgical Manufacturing Limited | Manufacturing | 2023 |
| Carefree 247 Limited | Health & social care | 2014 |
| Carequick Limited | Construction | 1992 |
| Carousel Music & Movement CIC | Health & social care | 2021 |
| Cartel Construction Limited | Construction | 2017 |
| Carter-Jones Limited | Construction | 2024 |
| Carzzz Ltd | Wholesale & retail | 2025 |
| Case Groundworks and Surfacing Ltd | Construction | 2024 |
| Cashflow Direct Limited | Extraterritorial | 2018 |
| Caspa Ltd | Professional & scientific | 2021 |
| Castle View Properties (NW) Limited | Real estate | 2014 |
| Catering Services and Installations Limited | Manufacturing | 2008 |
| Caterking Limited | Wholesale & retail | 2009 |
| Causeway END Properties Ltd | Real estate | 2026 |
| Causeway Group Limited | Wholesale & retail | 2015 |
| Causeway Rentals Limited | Real estate | 2025 |
| Cavalier PMS Limited | Real estate | 2026 |
| Cavern Block Management Limited | Real estate | 2024 |
| CB Tree Surgery and Hedge Work Ltd | Administrative & support | 2022 |
| CBR Events Ltd | Other services | 2020 |
| Cbrra Solutions Ltd | Construction | 2025 |
| CC Commercial Limited | Professional & scientific | 2016 |
| CC Pressure Washing Ltd | Extraterritorial | 2024 |
| CCL Projects Ltd | Wholesale & retail | 2021 |
| CDB Consultancy Ltd | Professional & scientific | 2022 |
| CDB North West Limited | Administrative & support | 2017 |
| CDC Buying Limited | Other services | 2007 |
| Cean Limited | Financial services | 2025 |
| Cedar Farm Management Ltd | Energy | 2024 |
| Celestial Care Services Ltd | Health & social care | 2026 |
| Censolutions Consultancy Limited | Professional & scientific | 2019 |
| Censolutions Ltd | Professional & scientific | 2003 |
| Censolutions Ukca Ltd | Professional & scientific | 2021 |
| Centrefact Limited | Administrative & support | 2011 |
| Cerberus Chemicals Limited | Manufacturing | 2012 |
| Ceres EMC (North West) Limited | Professional & scientific | 2018 |
| CFA Civils Limited | Construction | 2018 |
| CFC Building and Civil Engineering Limited | Professional & scientific | 2017 |
| CFF Properties Limited | Real estate | 2026 |
| CG Oral Surgery Limited | Health & social care | 2025 |
| CG22 Limited | Real estate | 2019 |
| CH1 Storage Limited | Real estate | 2010 |
| Chakao Ltd | Wholesale & retail | 2024 |
| Chameleon Custom Designs Limited | Wholesale & retail | 2023 |
| Chapel Lane Driving Academy Ltd | Education | 2026 |
| Character Boats (UK) Ltd | Manufacturing | 2012 |
| Charnwood Close Management Company Limited | Households | 2016 |
| Charnwood Property Investments Limited | Real estate | 2019 |
| Chartfield Holdings Limited | Administrative & support | 2024 |
| Chasing Cars Limited | Wholesale & retail | 2007 |
| Chem Care Solutions Ltd | Manufacturing | 2009 |
| Chemiphase Distribution Ltd | Manufacturing | 2023 |
| Chemiphase Holdings Ltd | Other services | 2025 |
| Chemiphase International Limited | Manufacturing | 2010 |
| Chen&Yao Investment Ltd | Households | 2026 |
| Cherry Tree Salon Solutions Limited | Administrative & support | 2021 |
| Cheshire Holiday Parks Limited | Hospitality | 2017 |
| Chester Health Store Ltd | Wholesale & retail | 2010 |
| Chips Farm Ltd | Other services | 2018 |
| Choice Benefits Ltd | Financial services | 2015 |
| Chopsons Barbers Ltd | Other services | 2025 |
| Christmas Decorators UK Services Limited | Administrative & support | 2019 |
| Christophorou Limited | Other services | 1997 |
| Church Street Leisure Ltd | Hospitality | 2025 |
| Churcher Estates Limited | Real estate | 2021 |
| Churchmore Limited | Construction | 1997 |
| Cinar Food Limited | Hospitality | 2019 |
| Circa 1170 C.I.C. | Arts & recreation | 2024 |
| Citygate Management Services Ltd. | Administrative & support | 2019 |
| CJ Bubbles Ltd | Administrative & support | 2025 |