| Capture This Ltd | Professional & scientific | 2014 |
| Carbon Partners Ltd | Professional & scientific | 2026 |
| Carbon Trading Limited | Professional & scientific | 2005 |
| Cardia Limited | Real estate | 1961 |
| Cardia Property Co. Limited | Construction | 1964 |
| Cardio Health Intl Limited | Administrative & support | 2010 |
| Cardkays Ltd | Health & social care | 2025 |
| Care About NOW Ltd | Extraterritorial | 2019 |
| Career Movers Limited | Administrative & support | 2019 |
| Carlton Court (Management) Limited | Households | 1983 |
| Caroline Lovejoy Ltd | Health & social care | 2003 |
| Carrot.Run Enterprises Ltd | Information & communication | 2024 |
| Carrot.Run Ltd | Arts & recreation | 2020 |
| Cartel Community Ltd | Professional & scientific | 2021 |
| Carters Car Care Limited | Wholesale & retail | 2002 |
| CAS Procurement Consulting Ltd | Information & communication | 2016 |
| Caseminster Limited | | 1985 |
| Castalia Management Limited | Professional & scientific | 2005 |
| Castle Arch Commodities Ltd | Wholesale & retail | 2018 |
| Catalyst Innovation Limited | Information & communication | 2006 |
| Catania Services Ltd | Professional & scientific | 2023 |
| Cbenvenuttidr Art Ltd | Administrative & support | 2018 |
| CC (Westcott) Management Company Limited | Households | 2023 |
| CC Residents Limited | Households | 2008 |
| Ccslx Limited | Professional & scientific | 2025 |
| CD R&D Consultancy Services Limited | Professional & scientific | 2015 |
| Cecilia London Limited | Other services | 2020 |
| Cedar Rise (Reigate) Management Company Limited | Households | 2009 |
| Ceilingorbs Ltd | Wholesale & retail | 2022 |
| Celebrate at Home Limited | Hospitality | 2017 |
| Celebration Villas Management Company Limited | Households | 2024 |
| Cellar Exchange Ltd | Wholesale & retail | 2007 |
| Central Europe Limited | Financial services | 2017 |
| Central Surrey Voluntary Action Limited | Other services | 2010 |
| Century House Residents Management Company (Horsham) Limited | Households | 2021 |
| Cerulean AI Ltd | Administrative & support | 2024 |
| Cesana Ltd | Professional & scientific | 2021 |
| Chain Reaction Films Limited | Information & communication | 2015 |
| Chalfont Park Midco Limited | Real estate | 2019 |
| Challice Consulting Ltd | Agriculture & fishing | 2007 |
| Chandler Creative Carpentry Ltd | Manufacturing | 2020 |
| Chandler Harris Recruitment Ltd | Administrative & support | 2019 |
| Channel Partners Limited | Information & communication | 1995 |
| Channel Wide Distribution Ltd | Wholesale & retail | 2024 |
| Chapel Mews Dorking Management Company Limited | Households | 2006 |
| Charlesworth Club Ltd | Wholesale & retail | 2023 |
| Charlton House 87 South Street Ltd | Households | 2023 |
| Charter House (Sutton) Residents Association Limited | Households | 1973 |
| Chartstone Limited | Administrative & support | 1998 |
| Chartwell Management Limited | Households | 1988 |
| Chartwood Place Limited | Real estate | 2015 |
| CHB Consultants Limited | Administrative & support | 1996 |
| Chda Consulting Ltd | Professional & scientific | 2026 |
| Cheam Kitchens Bedrooms & Bathrooms Ltd | Other services | 2014 |
| Check Delivery Ltd | Wholesale & retail | 2024 |
| Cheddar Property Limited | Construction | 2023 |
| Chelwood Vachery Residents Management Limited | Households | 1993 |
| Chequers Court (Dorking) Management Company Ltd | Households | 2013 |
| Chertsey Road Residents Company Limited | Households | 2002 |
| Chestnut Court (Horley) Limited | Households | 2006 |
| Chestnut Way Management Company Limited | Households | 2014 |
| Chichester Therapy Rooms Limited | Health & social care | 2025 |
| Chickfella & Greek Food Ltd | Hospitality | 2025 |
| Children's Physio Limited | Health & social care | 2011 |
| Chilli Diner Ltd | Hospitality | 2020 |
| Chilworth Court Lessees Limited | Households | 1965 |
| Chimney Fire Coffee Ltd. | Manufacturing | 2016 |
| Chip Chase Limited | Administrative & support | 2010 |
| Chris Edge Tree Care Limited | Administrative & support | 2008 |
| Chris Wilkinson Consulting Limited | Professional & scientific | 2012 |
| Christer Associates Ltd | Professional & scientific | 2017 |
| Christian Fischbacher Ltd | Wholesale & retail | 1994 |
| Christian Sloane Ltd | Wholesale & retail | 2015 |
| Christopher Rowe Limited | Financial services | 2011 |
| Church Walk (Bletchingley) Management Ltd | Households | 2013 |
| Cidermill Hatch Management Company Limited | Real estate | 1984 |
| Cinémaison Ltd | Information & communication | 2022 |
| Circular Dorking C.I.C. | Health & social care | 2024 |
| Cirix Limited | Information & communication | 2005 |
| Citrade Ltd | Wholesale & retail | 2007 |
| Citrus Healthcare Consulting Limited | Financial services | 2010 |
| City and Marine Surveying and Construction Limited | Construction | 2005 |
| City and Soul (London) Limited | Real estate | 2023 |
| Cityland Securities Limited | Real estate | 1961 |
| Cityrealm Limited | Professional & scientific | 1988 |
| Civita Digital Ltd | Professional & scientific | 2025 |
| CJR GRP Ltd | Professional & scientific | 2025 |
| CKF International Consultants Limited | Transport & logistics | 2012 |
| CKS Finance Limited | Professional & scientific | 2018 |
| Claire Elizabeth (Lifestyle) Ltd | Professional & scientific | 2014 |
| Clairville Court Management Co.Limited | Households | 1971 |
| Claremont by Design Limited | Construction | 2012 |
| Claremont Finesse Effingham Limited | Construction | 2021 |
| Claremont Finesse Group Limited | Financial services | 2017 |
| Claremont Finesse Limited | Construction | 2014 |
| Claremont Finesse Stoke Road Limited | Construction | 2020 |
| Claremont Finesse Weybridge Limited | Construction | 2020 |
| Clarosur Limited | Professional & scientific | 2015 |
| Classyworld Signature Ltd | Wholesale & retail | 2026 |
| Claudia Malcolm GXP QA Services Ltd | Professional & scientific | 2023 |