| Chevron Heritage Ltd | Manufacturing | 2012 |
| Chevron Racing Team Ltd | Manufacturing | 2017 |
| Chicane Classics Limited | Manufacturing | 2008 |
| Chipman Consulting Limited | Professional & scientific | 2019 |
| Christine King Ltd | Professional & scientific | 2011 |
| CHS Installations Limited | Construction | 2005 |
| Church Crookham Limited | Wholesale & retail | 2014 |
| Ciaao Properties Limited | Real estate | 2025 |
| Cinch Cars Limited | Wholesale & retail | 2018 |
| Cinch Fleetco Limited | Professional & scientific | 2020 |
| Cinch Group Limited | Financial services | 2020 |
| Cinch Holdco UK Limited | Financial services | 2020 |
| Cinch Ltd | Extraterritorial | 2022 |
| Cinnamon Consulting Limited | Administrative & support | 2005 |
| Circle in the Sand Communications Ltd | Professional & scientific | 2011 |
| Cisza Space Limited | Other services | 2025 |
| City London Developments Limited | Real estate | 2014 |
| CJH Facilities Ltd | Administrative & support | 2025 |
| Cjmgps Ltd | Administrative & support | 2022 |
| Cjmlps Ltd | Real estate | 2026 |
| CKR Surveying Limited | Professional & scientific | 2012 |
| CL Number Nine Limited | Real estate | 2015 |
| CL Number Twenty Eight Limited | Financial services | 2018 |
| CL Number Twenty Nine Limited | Financial services | 2018 |
| CL Number Twenty Seven Limited | Financial services | 2018 |
| CL Number Twenty SIX Limited | Financial services | 2018 |
| Clappison Property Ltd | Real estate | 2025 |
| Clarity Learning Limited | Information & communication | 2008 |
| Clark and SON Limited | Construction | 2023 |
| Claughton Builders Limited | Construction | 2022 |
| Clearchoice Debt Solutions Ltd | Professional & scientific | 2026 |
| Cloud Bear Ltd | Information & communication | 2018 |
| Cloudbase Airsports Limited | Arts & recreation | 2019 |
| Cloudbase Trading Ltd | Arts & recreation | 2009 |
| Clowd Ltd | Wholesale & retail | 1987 |
| Clyde Consulting Ltd | Professional & scientific | 2011 |
| Coastline Catering UK Ltd | Other services | 2021 |
| Cockerel Inns Limited | Hospitality | 1992 |
| Cogo Property Ltd | Financial services | 2025 |
| Coker Exhibition Systems Limited | Manufacturing | 2002 |
| Colebrook Court Headlease Company Limited | Real estate | 2009 |
| Collaborate Solutions Ltd | Information & communication | 2011 |
| Collard Aggregates Limited | Construction | 2020 |
| Collard Environmental Limited | Water & waste | 2018 |
| Collard Group Limited | Professional & scientific | 2008 |
| Collard Racing Limited | Arts & recreation | 2001 |
| Collard Ready MIX Limited | Manufacturing | 2024 |
| Collarton Developments Ltd | Real estate | 2024 |
| Common Ground Theatre Productions UK CIC | Arts & recreation | 2025 |
| Company Moves and Storage Limited | Transport & logistics | 2013 |
| Complete Furnishing Solutions Limited | Wholesale & retail | 2011 |
| Compton Homes (Southern) Ltd | Professional & scientific | 2017 |
| Concept Targets Limited | Arts & recreation | 2007 |
| Conciliate Mediation Limited | Professional & scientific | 2016 |
| Conclique Technologies Services Limited | Information & communication | 2019 |
| Conigre Square (Management) Company Limited | Real estate | 2004 |
| Conmitto Limited | Other services | 2014 |
| Connect Electrical Services (South East) Limited | Construction | 2007 |
| Connective Consulting Group Ltd | Professional & scientific | 2026 |
| Consol UK Limited | Information & communication | 1999 |
| Constellation Automotive Capital Limited | Financial services | 2021 |
| Constellation Automotive Financing PLC | Other services | 2021 |
| Constellation Automotive Group Limited | Professional & scientific | 2019 |
| Constellation Automotive Holdings Limited | Financial services | 2021 |
| Constellation Automotive Limited | Professional & scientific | 2019 |
| Constellation Developments Limited | Financial services | 2020 |
| Constellation Retail Group Limited | Financial services | 2021 |
| Constellation Retail Limited | Financial services | 2022 |
| Continest Limited | Extraterritorial | 2020 |
| Coolingcore Holdings Limited | Financial services | 2025 |
| Cooper Medical Limited | Health & social care | 2021 |
| Coralpoint Consultancy Limited | Professional & scientific | 2021 |
| Corpcus Inc Ltd | Professional & scientific | 2024 |
| Corporate Aero-Tech Ltd | Manufacturing | 2013 |
| Corporate Drop OUT Ltd | Wholesale & retail | 2025 |
| Correxa Limited | Professional & scientific | 2017 |
| Cosentino UK Limited | Manufacturing | 2001 |
| Cossins Limited | Professional & scientific | 2017 |
| Costa Carwash Ltd | Administrative & support | 2020 |
| Costa Carwash Services Ltd | Administrative & support | 2026 |
| Costa Tyres Services Ltd | Wholesale & retail | 2026 |
| Cotton & Grey Ltd | Wholesale & retail | 2021 |
| Couperon Advisory Ltd | Administrative & support | 2017 |
| Court Place Limited | Wholesale & retail | 2021 |
| Courzons Ltd | Professional & scientific | 2020 |
| Cove Properties Limited | Real estate | 1996 |
| CP & MS Holdings Limited | Real estate | 2015 |
| Cranbrook Interiors Limited | Other services | 2013 |
| Cranford Energy Limited | Professional & scientific | 2020 |
| CRC Environmental Services Ltd | Administrative & support | 2023 |
| CRC Trailers Limited | Manufacturing | 2025 |
| CRC Transport Limited | Transport & logistics | 2013 |
| CRD Records Limited | Manufacturing | 1974 |
| Creative Dezigns Ltd | Wholesale & retail | 2005 |
| Creatively Coaching Limited | Professional & scientific | 2020 |
| Creokinetics Ltd | Information & communication | 2014 |
| Cris Engineer Ltd | Construction | 2016 |
| Crombie Global Limited | Professional & scientific | 2008 |
| Crookham Park (Church Crookham) Management Company Ltd | Households | 2011 |
| Crowdlords Limited | Financial services | 2014 |