| Canham Consultants (Kent) Unlimited | Professional & scientific | 2019 |
| Canham Developments Limited | Extraterritorial | 2006 |
| Canham Group Limited | Extraterritorial | 2022 |
| Canham Holdings (Kent) Unlimited | Financial services | 2021 |
| Canham Homes (Kent) Limited | Construction | 2012 |
| Canham Homes Limited | Construction | 2010 |
| Canham Investments Limited | Extraterritorial | 2006 |
| Canham Properties Limited | Extraterritorial | 2006 |
| Canham Recycling Ltd | Extraterritorial | 2023 |
| Canham Rentals Ltd | Real estate | 2024 |
| Cannonbridge Ltd | Construction | 2024 |
| Cannons Print and Design Ltd | Manufacturing | 2012 |
| Cannons View Management Company Limited | Households | 1996 |
| Canterbury Health Limited | Health & social care | 2012 |
| Cantium Accountants Limited | Professional & scientific | 1994 |
| Cantium Cats Ltd | Other services | 2021 |
| Cantium Publishing Limited | Extraterritorial | 1994 |
| Capel Fencing Limited | Extraterritorial | 2019 |
| Capel Garden Pots Limited | Other services | 2024 |
| Capel Groundcare Ltd | Administrative & support | 2022 |
| Capel Group Limited | Construction | 2005 |
| Capel Renewable Energy Ltd | Agriculture & fishing | 2017 |
| Capel Support Services Ltd | Construction | 2017 |
| Capel Tree Services Limited | Extraterritorial | 2019 |
| Capelwood Properties Ltd | Real estate | 2019 |
| Capital Meats (Wholesale) Limited | Wholesale & retail | 2015 |
| Capital Yachting Limited | Transport & logistics | 2017 |
| CAPTIV8 Productions Limited | Arts & recreation | 2012 |
| Carafe Limited | Wholesale & retail | 2019 |
| Carbon Neutral Paper Limited | Wholesale & retail | 2021 |
| Carbonate Reservoir Geoconsulting Limited | Professional & scientific | 2011 |
| Cardio Kent Ltd | Health & social care | 2026 |
| Careerly Limited | Administrative & support | 2022 |
| Cares for YOU Ltd | Professional & scientific | 2020 |
| Carey Brothers & Sons Building Contractors Ltd | Construction | 2024 |
| Carlingbridge Limited | Administrative & support | 2024 |
| Carlisle Securities Limited | Real estate | 2020 |
| Carlton 1 Ltd | Construction | 2025 |
| Carmen Reynolds Advisers Limited | Professional & scientific | 2026 |
| Carr and Westley Limited | Wholesale & retail | 1934 |
| Carriage Private Hire Limited | Transport & logistics | 2018 |
| Carringbush Solutions Ltd | Information & communication | 2014 |
| Carry Way Limited | Hospitality | 2023 |
| Cartama UK Limited | Wholesale & retail | 2015 |
| Carter and Winch Limited | Professional & scientific | 2018 |
| Carter Roofing Solutions Limited | Construction | 2011 |
| Carter Stokes Ltd | Administrative & support | 2014 |
| Casey Property Ltd | Real estate | 2020 |
| Casey Saddle Limited | Information & communication | 2017 |
| Cashur Medical Ltd | Health & social care | 2024 |
| Cask International Limited | Wholesale & retail | 2015 |
| Casspa Ltd | Other services | 2021 |
| Castle Accident Repair Centre Ltd | Wholesale & retail | 2025 |
| Castle Cars Tonbridge Limited | Transport & logistics | 2019 |
| Castle Hill Oasts Ltd | Wholesale & retail | 2011 |
| Castle House Management Company (East Street Tonbridge) Limited | Households | 2016 |
| Castle Ramparts Limited | Real estate | 2024 |
| Castlegate Accountancy Limited | Professional & scientific | 2025 |
| Castlemaine Oast Limited | Real estate | 2009 |
| Catco Home Concepts Ltd | Construction | 2017 |
| Catechin Limited | Wholesale & retail | 2019 |
| Cavendish Tea Lounge Ltd | Hospitality | 2026 |
| Caxton House Developments Limited | Real estate | 2018 |
| Caxton Place Heritage Limited | Households | 1991 |
| CB Arbitrations Limited | Professional & scientific | 2014 |
| CB3 Limited | Wholesale & retail | 2016 |
| CBF Holdings Limited | Financial services | 2017 |
| CBS Computers IT Limited | Information & communication | 2022 |
| CCL Academy Ltd | Education | 2000 |
| Cdlv Ltd | Construction | 2025 |
| Cdmoor Limited | Construction | 2021 |
| Ce&A Ltd | Health & social care | 2020 |
| Cece's Rainbow Kids Limited | Health & social care | 2016 |
| Cedar Grove Advisors Limited | Professional & scientific | 2018 |
| Central Garage (Southborough) Limited(The) | | 1968 |
| Centre for Building Conservation Studies Ltd | Education | 2019 |
| Century Construction Group Limited | Financial services | 2019 |
| Century Facades Limited | Construction | 2012 |
| CF Medical Services Ltd | Health & social care | 2021 |
| CG2 Solutions Limited | Information & communication | 2009 |
| CGJ Enterprises Holdings Ltd | Financial services | 2024 |
| CGJ Enterprises Limited | Real estate | 2004 |
| CH Creative Resources Limited | Administrative & support | 2006 |
| CH Sign Services Limited | Construction | 2020 |
| Chads Properties Ltd | Transport & logistics | 2026 |
| Chads Social Health Care Ltd | Education | 2025 |
| Challenge Group (UK) Limited | Financial services | 2012 |
| Challenge Group Livestock Limited | Financial services | 2012 |
| Challenge Group Risk Management Limited | Professional & scientific | 2015 |
| Challenge Group Underwriting Services Limited | Professional & scientific | 2016 |
| Challenge Risk Management Limited | Professional & scientific | 2015 |
| Challenge Underwriting Services Limited | Professional & scientific | 2016 |
| Champion Global Limited | Wholesale & retail | 1989 |
| Champions Drive Ltd | Education | 2022 |
| Chan UNG Architects Limited | Professional & scientific | 2014 |
| Channel (RYE) Limited | Construction | 1979 |
| Chapel 1961 Limited | Extraterritorial | 2015 |
| Chapel Place Osteopaths Ltd | Health & social care | 2026 |
| Chapel-King Associates Limited | Administrative & support | 2012 |
| Chapman Trice Landscape Contractors Limited | Administrative & support | 2015 |