| Cashan Limited | Financial services | 2013 |
| Castle Consultants Ltd | Education | 2015 |
| Castle Contract Builders Limited | Construction | 2001 |
| Castle Hill Contractors Limited | Construction | 2024 |
| Castle Moat Building Services Limited | Construction | 2021 |
| Castle View Day Nursery Limited | Administrative & support | 2001 |
| Castle View Estate Management Limited | Real estate | 2018 |
| Castle View House (Upnor) Limited | Households | 2020 |
| Castlegate Construction Ltd | Construction | 2019 |
| Castlerock Wealth Management Limited | Financial services | 2014 |
| Cat Contractors Ltd | Construction | 2017 |
| Catalect Ltd | Information & communication | 2021 |
| Caupenne Ltd | Manufacturing | 2020 |
| Cawdor Country Inns Limited | Administrative & support | 2004 |
| Cawdor Leisure Limited | Extraterritorial | 2004 |
| CB Carpentry & Building Ltd | Construction | 2025 |
| CC Providing Supportive Solutions LLP | | 2023 |
| CCO Holdings Group Ltd | Real estate | 2024 |
| Ccoates Ltd | Real estate | 2025 |
| Ccoates Security Ltd | Administrative & support | 2026 |
| CCT Worldwide (UK) Holdings Limited | Transport & logistics | 2020 |
| CCT Worldwide (UK) Limited | Transport & logistics | 1985 |
| CCT Worldwide (UK) Warehousing & Fulfilment Services Limited | Transport & logistics | 2020 |
| CCT Worldwide Logistics Limited | Transport & logistics | 2020 |
| Ccutool&Planthire Limited | Manufacturing | 2024 |
| CDP Media Ltd | Professional & scientific | 2023 |
| Cd’S 3 Ltd | Hospitality | 2025 |
| CE Accounting Limited | Professional & scientific | 2008 |
| Cecuris Ltd | Transport & logistics | 2020 |
| Celessence International Limited | Manufacturing | 2007 |
| Celessence Licensing Limited | Administrative & support | 2010 |
| Celeste 101 Housing and Support Ltd | Health & social care | 2022 |
| Celestial Aerial Arts LLP | | 2020 |
| Cellar Snacks & Supplies Ltd | Wholesale & retail | 2025 |
| Cellecta Limited | Construction | 2001 |
| Celt Karate Limited | Arts & recreation | 2012 |
| Celugreen Technologies UK Ltd | Manufacturing | 2024 |
| Cend Global Limited | Administrative & support | 2021 |
| Centigen Ltd | Financial services | 2025 |
| Central Wholesale Produce Limited | Wholesale & retail | 1994 |
| Centre Circle Event Management Ltd | Administrative & support | 2005 |
| Centre Court Medway Limited | Real estate | 2016 |
| Centric Tutors Limited | Education | 2024 |
| Century Buildings (Rochester) Limited | Real estate | 2009 |
| Certitude Wealth Limited | Professional & scientific | 2014 |
| Certnow Limited | Professional & scientific | 2026 |
| Cet-C for Women | Other services | 2007 |
| Cezar SON Ltd | Transport & logistics | 2019 |
| CG Chakra Healthcare Limited | Health & social care | 2025 |
| CG Commercials Ltd | Wholesale & retail | 2026 |
| CG Mechanical Ltd | Construction | 2023 |
| CGF Transport Services Ltd | Transport & logistics | 2020 |
| CGM Sports Performance Limited | Other services | 2023 |
| Chaggar Developments Limited | Real estate | 2024 |
| Chalk Fit OUT Limited | Construction | 2023 |
| Challengers of Rochester Limited | Professional & scientific | 1992 |
| Challis Services Ltd | Construction | 2023 |
| Chambers Estates Kent Ltd. | Real estate | 2016 |
| Chan Antony Limited | Real estate | 2020 |
| Chand Ltd | Administrative & support | 2013 |
| Chaney Consultants Limited | Construction | 2023 |
| Changthong Ltd | Hospitality | 2025 |
| Chaponnel Partnership Limited | Construction | 2015 |
| Chapters Group Holdings Limited | Financial services | 2020 |
| Chapters Property Services Limited | Real estate | 2020 |
| Chapters Solutions Limited | Professional & scientific | 2023 |
| Charge Property Group Ltd | Construction | 2024 |
| Charge X Bauvills Seaford Road Ltd | Construction | 2024 |
| Charj Electrical Ltd | Construction | 2022 |
| Charles Bainbridge Limited | Real estate | 2014 |
| Charles Estates Management Limited | Real estate | 2026 |
| Charles Hewitt Limited | Transport & logistics | 2009 |
| Charles Wren Ltd | Construction | 2017 |
| Charlesworth House Residents Association Limited | Households | 1992 |
| Charlie and the Coffee Factory Limited | Wholesale & retail | 2021 |
| Charlie and the Ice Cream Factory Limited | Wholesale & retail | 2021 |
| Charlie and the Pizza Factory Limited | Wholesale & retail | 2021 |
| Charlie and the Shake Factory Limited | Wholesale & retail | 2021 |
| Charlie and the Syrup Factory Limited | Wholesale & retail | 2021 |
| Charlotte Smith Consultancy Limited | Professional & scientific | 2018 |
| Charred Hot Sauce Limited | Manufacturing | 2020 |
| Chartley Furniture Design Limited | Manufacturing | 1996 |
| Chatham Properties Group Ltd | Real estate | 2025 |
| Chattaway Publishing Ltd. | Information & communication | 2022 |
| Chattenden Holdings Limited | Real estate | 2018 |
| Cheeky Clucker Entertainment Ltd | Hospitality | 2020 |
| Chegworth Limited | Extraterritorial | 2008 |
| Chegworth Valley Juices Limited | Extraterritorial | 2008 |
| Chegworth Valley Limited | Wholesale & retail | 2008 |
| Chellyco Limited | Hospitality | 2023 |
| Chelsea Fruit & VEG Ltd | Wholesale & retail | 2014 |
| Cherished Casts Ltd | Arts & recreation | 2025 |
| Cherry Crescent Ltd | Financial services | 2026 |
| Cherry Garden Consultants Limited | Information & communication | 2002 |
| Cherry Tree Forge Ltd | Manufacturing | 2012 |
| Cherry Tree Park (Sittingbourne) Management Company Limited | Real estate | 2004 |
| Cheviot Management Limited | Households | 2018 |
| Cheviot Smith Holdings Limited | Real estate | 2021 |
| Cheviot Smith Investments Limited | Real estate | 2021 |
| Chfb Holdings Limited | Real estate | 2024 |