| Car Leasing UK Limited | Financial services | 2008 |
| Carant Limited | Real estate | 2022 |
| Carbide Consultancy Ltd | Information & communication | 2019 |
| Cardinal Events Limited | Administrative & support | 2007 |
| Caron Kennedy Limited | Professional & scientific | 2012 |
| Carr Adventures Limited | Education | 2015 |
| CARS4ALL Garage Limited | Wholesale & retail | 2011 |
| CARS4ALL Showroom Limited | Wholesale & retail | 2011 |
| Casey Taylor Digital Marketing Ltd | Professional & scientific | 2019 |
| Castle Carpentry Services Ltd | Construction | 2018 |
| Catarama Limited | Professional & scientific | 2014 |
| Caterpillar Cars Ltd | Wholesale & retail | 2026 |
| Cath Services Ltd | Construction | 2015 |
| Catus Consulting Ltd | Professional & scientific | 2015 |
| CB2 Ltd | Information & communication | 2025 |
| CCB Productions Ltd | Professional & scientific | 2024 |
| CDO Electrical Ltd | Construction | 2023 |
| Celebrity Cardboard Cut-Outs Limited | Professional & scientific | 2004 |
| Central England Properties Limited | Real estate | 1993 |
| Centrilift Industrial Services Company Ltd | Transport & logistics | 1996 |
| Centriplant Rebuilds & Tank Company Limited | Wholesale & retail | 2000 |
| Centritank Company Limited | Wholesale & retail | 1991 |
| CH (Jacobs Yard) Limited | Construction | 2013 |
| Chantal Limited | Other services | 2010 |
| Charlotte Marriott Sparkle Ltd | Manufacturing | 2026 |
| Charman Contracting Limited | Construction | 2011 |
| Charvet Investments Limited | Hospitality | 1998 |
| Checkrapid Limited | Professional & scientific | 1990 |
| Chelsea Soap Co. Limited | Wholesale & retail | 2020 |
| Cheyne Mall Ltd | Professional & scientific | 2025 |
| Chichester Carpet and Upholstery Cleaning Limited | Other services | 2018 |
| Chichester Gate Automation Limited | Construction | 2024 |
| Chipstead of Cranleigh Limited | Wholesale & retail | 1983 |
| Chitosan Group Limited | Wholesale & retail | 2020 |
| Chitosan Moisturiser Limited | Wholesale & retail | 2020 |
| Chitosan Sanitiser Limited | Wholesale & retail | 2020 |
| Chitosan Soap Limited | Wholesale & retail | 2020 |
| Chris Lulham Racing Limited | Professional & scientific | 2023 |
| Chris Mccarthy Promotions Limited | Arts & recreation | 2020 |
| Christian Reid Block Management Limited | Real estate | 2018 |
| Christian Reid Lettings Limited | Real estate | 2012 |
| Chrome Sphere Limited | Information & communication | 2005 |
| Church Street 12 Limited | Real estate | 2013 |
| CI Property Works Ltd | Construction | 2026 |
| CIH Solutions Ltd | Information & communication | 2007 |
| CJ Hewitt Consulting Ltd | Information & communication | 2024 |
| CJB Plumbing and Heating (Cranleigh) Limited | Construction | 2019 |
| Ckns-Uk Ltd | Hospitality | 2024 |
| CKW Architects Ltd | Professional & scientific | 2012 |
| Clair Neill Therapy Ltd | Health & social care | 2024 |
| Clarke Financial Planning Services Limited | Financial services | 2016 |
| Classic Motoring Limited | Administrative & support | 2021 |
| CLB Developments Ltd | Construction | 2024 |
| Cleworth Building Supplies Limited | Wholesale & retail | 2023 |
| Clientful Limited | Financial services | 2021 |
| Clientsaplenty Limited | Administrative & support | 2024 |
| Clifford Lane Limited | Financial services | 2017 |
| Clifton House Consulting Limited | Professional & scientific | 2020 |
| CLJ Skin Clinic Limited | Health & social care | 2023 |
| Club & Event Supplies Ltd | Wholesale & retail | 2008 |
| Cobra Developments Limited | Construction | 2020 |
| Cobra Investments Ltd | Real estate | 2021 |
| Codeaway Software Ltd | Information & communication | 2021 |
| Collected Film Ltd | Information & communication | 2024 |
| Collins Court Limited | Real estate | 2019 |
| Combehaven Services Ltd | Professional & scientific | 2025 |
| Compass International Media Limited | Administrative & support | 1994 |
| Competition Consulting Limited | Professional & scientific | 2022 |
| Complete Scaffolding Group (2026) Limited | Construction | 2024 |
| Compound Research Ltd | Professional & scientific | 2021 |
| Compute Maritime Ltd | Information & communication | 2024 |
| Conizza Swirls Limited | Hospitality | 2025 |
| Connaught Lithoservices Limited | Information & communication | 1968 |
| Consensus Group Ltd | Professional & scientific | 2015 |
| Contentment Creative Ltd | Professional & scientific | 2015 |
| Corrour Limited | Financial services | 2012 |
| Cortes Homes Ltd | Real estate | 2025 |
| Cosh & Co. Limited | Professional & scientific | 2019 |
| Cosmokitten Ltd | Manufacturing | 2025 |
| Cosmoledo Limited | Wholesale & retail | 2011 |
| Coti Business Investments Limited | Financial services | 2024 |
| Country Homes (Guildford) Limited | Construction | 2000 |
| Country Homes (Key Site) Limited | Real estate | 2011 |
| Country Homes (Peaslake) Limited | Construction | 2014 |
| Country Homes (Tangley) Limited | Real estate | 2013 |
| Country Homes (Turret House) Limited | Construction | 2010 |
| Country Homes Corhampton Limited | Real estate | 2016 |
| Country Homes Sussex Limited | Construction | 1994 |
| Court Lodge Limited | Health & social care | 2020 |
| Courtesy Car Leasing Ltd | Wholesale & retail | 2007 |
| Courtyard (Alderbrook) Residents Association Limited | Real estate | 2005 |
| Cousin Branding Limited | Professional & scientific | 2019 |
| Covey Contracting Ltd | Construction | 2018 |
| Cozzy Films Limited | Information & communication | 2026 |
| CQ Collective Ltd | Professional & scientific | 2026 |
| Craneshurst Residents Management Company Limited | Households | 2008 |
| Craneswood Limited | Information & communication | 2014 |
| Cranfold Physical Therapy Centre Limited | Health & social care | 1999 |
| Cranleigh Bathroom Studios Limited | Wholesale & retail | 2015 |
| Cranleigh Bathrooms Limited | Wholesale & retail | 2015 |