| BVH Heating Ltd | Construction | 2024 |
| Bwpmc Ltd | Real estate | 2016 |
| BXL Marketing & HR Limited | Professional & scientific | 2025 |
| C Cole Limited | Real estate | 2014 |
| C Everything Ltd | Information & communication | 2016 |
| C Henry Bond & Company Limited | Real estate | 2012 |
| C J Boreham Limited | Construction | 2003 |
| C&C Preservations and Remedials Ltd | Construction | 2020 |
| C. Page-Mitchell Commerical Ltd | Administrative & support | 2025 |
| C.E.C Service & Support Limited | Information & communication | 2018 |
| C.F. Hanna Limited | Administrative & support | 1981 |
| C.P.P. Interiors Limited | Construction | 2009 |
| C.P.R. (Little Common) Limited | Households | 1990 |
| C4 Entertainment Limited | Hospitality | 2021 |
| Cabinet Bits Limited | Wholesale & retail | 2015 |
| Cadell Automation Limited | Manufacturing | 2025 |
| Caiger and Co Catering Ltd | Hospitality | 2016 |
| Calleo Ltd | Information & communication | 2004 |
| Camberley Court RTM Company Limited | Households | 2021 |
| Camberwell Close (Residents) Limited | Administrative & support | 2004 |
| Camson Ventures Ltd | Other services | 2026 |
| Canine Studies College Ltd (Sicily Animal Support) | Other services | 2020 |
| Cannon EHV Services Limited | Construction | 2022 |
| Cantelupe Mansions Limited | Real estate | 2014 |
| Capella Care Limited | Health & social care | 2017 |
| Capello Ltd | Wholesale & retail | 2021 |
| Captive Experiences Limited | Arts & recreation | 2023 |
| Carbon Jacked Ltd | Professional & scientific | 2020 |
| Care Initiatives Limited | Health & social care | 2019 |
| Care Mode Ltd | Administrative & support | 2022 |
| Care Mode Services Ltd | Health & social care | 2023 |
| Care Staff S.E. Ltd | Health & social care | 2024 |
| CARE2TEAM Ltd | Administrative & support | 2019 |
| Career Confidence Ltd | Other services | 2017 |
| Carlar Care Limited | Health & social care | 2019 |
| Carley Renewables Limited | Construction | 2026 |
| Caroline Apparel Ltd | Wholesale & retail | 2026 |
| Carousel Developments (South East) LLP | | 2013 |
| Carousel Nursery School Limited | Education | 2003 |
| Carousel Properties (South East) Limited | Real estate | 2013 |
| Cars 4 YOU Car Sales Ltd | Wholesale & retail | 2019 |
| Casa DE LA Pier Ltd | Hospitality | 2025 |
| Casa DEL Smiffy Ltd | Wholesale & retail | 2021 |
| Cascades of Glory Ltd | Extraterritorial | 2003 |
| Casinos of Mayfair International Ltd | Arts & recreation | 1996 |
| Casson Commercials Ltd | Wholesale & retail | 2024 |
| Cast International (Transport) Ltd | Transport & logistics | 2023 |
| Castle Gardens Residents Association Limited | Households | 2009 |
| Castledine Holdings Ltd | Financial services | 2025 |
| Cavendish Court (Bexhill) Residents Company Limited | Households | 1987 |
| Cavill & Cruikshank Limited | Professional & scientific | 2024 |
| CB Stairlifts Limited | Construction | 2025 |
| Cbgc Debentures Ltd | Real estate | 2026 |
| Cdrn Ltd | Professional & scientific | 2018 |
| CEL David Trans Ltd | Transport & logistics | 2018 |
| Celebrity Seconds Ltd | Wholesale & retail | 2023 |
| Central Car Sales of Bexhill Limited | Wholesale & retail | 2004 |
| Central Nannies Ltd | Administrative & support | 2025 |
| Ceramitech Ltd | Construction | 2019 |
| Cernunnos Ltd | Hospitality | 1997 |
| Cggt Properties Ltd | Real estate | 2025 |
| Chancery Court Residents Company Limited | Extraterritorial | 2002 |
| Chapter Two (Bexhill) Limited | Hospitality | 2019 |
| Charles Douglas Developments Ltd | Construction | 2024 |
| Charlie Relph Ltd | Information & communication | 2020 |
| Charterholme Property Management Limited | Other services | 1996 |
| Charters-Ancaster College (1995) | Education | 1996 |
| Cheam Lodge Management Ltd | Households | 2020 |
| Cheary & Gallagher Limited | Administrative & support | 2011 |
| Chelsea Court Management (Bexhill) Limited | Households | 1996 |
| Cherry Blossom Salon Ltd | Other services | 2024 |
| Cherrypick Life Limited | Real estate | 2019 |
| Cherrystone Limited | Administrative & support | 2005 |
| Chessilliant Limited | Education | 2026 |
| Chestnut Restoration Ltd | Construction | 2023 |
| Childs Play Sussex Limited | Wholesale & retail | 2007 |
| Chilli Pepper Designs Limited | Professional & scientific | 2020 |
| Chilli Tree Asia Cuisine Limited | Hospitality | 2012 |
| Chilton Building & Developments Limited | Construction | 2023 |
| Chloe's Nail Salon Limited | Other services | 2015 |
| Choam Consultancy Ltd | Information & communication | 2022 |
| Chock a Block Storage Limited | Transport & logistics | 2020 |
| Chris Bridges Books Limited | Arts & recreation | 2026 |
| Chris Sexton Plumbing and Heating Limited | Construction | 2023 |
| Chris Smith Properties Limited | Real estate | 1997 |
| Christal Ltd | Professional & scientific | 2008 |
| Christie Developments Limited | Construction | 2019 |
| Christie Hurst Road Limited | Construction | 2022 |
| Christie Lettings Limited | Real estate | 2025 |
| Christie Mount Pleasant Ltd | Construction | 2024 |
| Christopher JAY Ltd | Wholesale & retail | 2025 |
| Church Farm Court Limited | Real estate | 2022 |
| Churchill Car Breakers Ltd | Wholesale & retail | 2019 |
| Ciao Barbers Limited | Real estate | 2015 |
| Cinnamon Cafe Ltd | Hospitality | 2018 |
| City Safe Storage Limited | Transport & logistics | 2021 |
| Civic Revival Ltd | Professional & scientific | 2020 |
| CJC Property Management Limited | Real estate | 2022 |
| Cjdrconstruction Ltd | Construction | 2020 |
| CJW Residential Limited | Real estate | 2025 |