| Centre Stage Parties Limited | Administrative & support | 2020 |
| Centre Stage Productions Limited | Arts & recreation | 2026 |
| Centre Stage Theatre Academy Limited | Arts & recreation | 2016 |
| Centreline Solar Prestige Limited | Real estate | 2019 |
| Centreline Support Limited | Information & communication | 1994 |
| Centric Mortgage Finance Ltd | Financial services | 2012 |
| Centrum Group Ltd | Administrative & support | 2015 |
| Centum Recruitment International Ltd | Information & communication | 2017 |
| Cezary Rennovare Construction & Plumbing Ltd | Construction | 2021 |
| Cffl Consultancy Ltd | Professional & scientific | 2017 |
| CG Site Electrical Ltd | Construction | 2021 |
| CG Site Service's Ltd | Construction | 2026 |
| CG Technical Property Services Limited | Professional & scientific | 2020 |
| Chailey Homes Limited | Real estate | 2009 |
| Chakowa LLP | | 2018 |
| Chalice Finance Limited | Professional & scientific | 2023 |
| Chalkkids and Personal Training Ltd | Arts & recreation | 2024 |
| Chalkway Homes Limited | Real estate | 2025 |
| Chalkways Management Company Limited | Real estate | 2008 |
| Chamberlain Investment Holdings Ltd | Financial services | 2022 |
| Chambers Interiors Limited | Manufacturing | 2012 |
| Chambers London Recruitment Ltd | Professional & scientific | 2021 |
| Champ Studios Ltd | Wholesale & retail | 2024 |
| Chandpore Tea Company Limited(The) | Agriculture & fishing | 1890 |
| Chandrakant Dahya Manga Ltd | Extraterritorial | 2025 |
| Channon Coaching Limited | Professional & scientific | 2021 |
| Chantelle Bourne CBT Ltd | Health & social care | 2022 |
| Chantry Land and Planning Limited | Real estate | 2012 |
| Chapel Print Limited | Manufacturing | 2002 |
| Chapel Surveyors Ltd | Professional & scientific | 2024 |
| Chapman Skinner Precision Limited | Manufacturing | 2002 |
| Chapmans Home Delivery Limited | Wholesale & retail | 2009 |
| Character Education Trust | Education | 2011 |
| Charles-Argyle Property Management Ltd | Real estate | 2011 |
| Charlotte New AGE Property Investments Limited | Financial services | 1998 |
| Charlotte's Premium Pet Care Ltd | Agriculture & fishing | 2026 |
| Charmaine Pryce Interiors Ltd | Professional & scientific | 2023 |
| Chart (Management) Limited | Households | 1973 |
| Chart Data Consultants Limited | Information & communication | 2008 |
| Chart Enterprises Limited | Agriculture & fishing | 1935 |
| Chart Farm Limited | Agriculture & fishing | 2014 |
| Chart Hills (Holdings) Limited | Hospitality | 2016 |
| Chart Hills Limited | Hospitality | 2016 |
| Chartwell Communications Ltd | Professional & scientific | 2025 |
| Chartwell Tree Consultants Limited | Professional & scientific | 2015 |
| Chas Norman Cameras Limited | Wholesale & retail | 2003 |
| Chateau London Limited | Professional & scientific | 1992 |
| Chattenden Storage Company Limited | Transport & logistics | 2023 |
| Chaucer Business Park Limited | Real estate | 2003 |
| Chaucer Classic Cars Limited | Wholesale & retail | 1989 |
| Chaucer Sevenoaks Limited | Wholesale & retail | 2002 |
| Chava Limited | Wholesale & retail | 2013 |
| Checkin Stays Limited | Administrative & support | 2020 |
| Cheeseman & Wilkins Estates Ltd | Real estate | 2026 |
| Chef Newbury Ltd | Hospitality | 2014 |
| Chelsea Cleaning Support Services Ltd | Administrative & support | 2026 |
| Chelsea Commercial Limited | Real estate | 2024 |
| Cherish Health, Ltd. | Manufacturing | 2019 |
| Cheriton (Dartford Road Sevenoaks) Management Limited | Households | 1980 |
| Chester Properties (Hotels 2) Limited | Extraterritorial | 2005 |
| Chester Properties (Hotels) Limited | Extraterritorial | 2000 |
| Chester Properties (Newcastle 2) Limited | Extraterritorial | 2005 |
| Chester Properties (Newcastle) Limited | Extraterritorial | 2000 |
| Chester Properties Limited | Professional & scientific | 1994 |
| Chesterdale Limited | Financial services | 1996 |
| Chestnut Management Company Limited(The) | Households | 1985 |
| Chevro Ltd | Other services | 2020 |
| Chez Shea Ltd | Professional & scientific | 2025 |
| Chibnall Contractors Ltd | Construction | 2021 |
| Chilli Estates Limited | Real estate | 2023 |
| Chilston Park Limited | Real estate | 1995 |
| Chilston Search Ltd | Administrative & support | 2012 |
| Chiltern Consultancy Services Ltd | Administrative & support | 2015 |
| Chimera Partners Investments Limited | Extraterritorial | 2009 |
| Chimera Partners Trading Limited | Extraterritorial | 2009 |
| China First Capital Group (UK) Limited | Wholesale & retail | 2019 |
| Chinacomb Martin Limited | Construction | 2023 |
| Chine Farm Place (RMC) Limited | Households | 2003 |
| Chinese Garage Limited | Wholesale & retail | 1954 |
| Chippendale Chiropractic Limited | Health & social care | 2013 |
| Chippo Projects Ltd | Construction | 2014 |
| Chipstead HQ Ltd | Hospitality | 2018 |
| Chipstead Legal Services Limited | Professional & scientific | 2012 |
| Chisel Chest Productions Ltd | Information & communication | 2012 |
| Chiselhampton Farm Ltd | Agriculture & fishing | 2024 |
| Chishwe Investments Limited | Financial services | 2023 |
| Chiswell Street Limited | Construction | 1999 |
| CHM Enterprises Ltd | Real estate | 2016 |
| Choice Live Ltd | Arts & recreation | 2020 |
| Chorlton Trust Limited | Real estate | 1930 |
| Chorus Insight Limited | Professional & scientific | 2021 |
| Chris Allen Equine Trimmer Ltd | Agriculture & fishing | 2019 |
| Chris Ashworth Limited | Information & communication | 2000 |
| Chris Hammond Dressage Ltd | Arts & recreation | 2024 |
| Chrispen Ltd | Real estate | 2016 |
| Christian Freestyle Karate Organisation Ltd | Arts & recreation | 2026 |
| Christmas Properties Limited | Real estate | 2016 |
| Christopher Brian Recruitment Limited | Administrative & support | 2023 |
| Chrysalis Care (Fostering) Limited | Administrative & support | 2008 |
| Chrysalis Care (Residential) Limited | Administrative & support | 2002 |