| Certus Group Ltd | Professional & scientific | 2015 |
| CG 689 Limited | Real estate | 2026 |
| CG Homes Limited | Real estate | 2020 |
| CGE Holdings Ltd | Financial services | 2023 |
| CGR Building Services Limited | Construction | 2015 |
| CGR Limited | Extraterritorial | 2009 |
| Chadsfield Training Ltd | Education | 2012 |
| Chalford Group Herefordshire Limited | Real estate | 2025 |
| Chalford Silviculture Limited | Agriculture & fishing | 2025 |
| Chambers Carpentry Ltd | Construction | 2020 |
| Chance Group Ltd | Administrative & support | 2018 |
| Chandos House Management Limited | Households | 1985 |
| Chapel Apartments (Coleford) Limited | Households | 1997 |
| Chapel Farm (Clyro) Ltd | Financial services | 2023 |
| Chapel on the Green Ltd | Hospitality | 2019 |
| Chapel Road Enterprise Ltd | Water & waste | 2021 |
| Chaptastic Creations Ltd | Manufacturing | 2025 |
| Character Publishing Limited | Administrative & support | 2004 |
| Chard Direct Limited | Professional & scientific | 1999 |
| Charfish Consulting Ltd | Professional & scientific | 2024 |
| Chargeeasy Limited | Construction | 2019 |
| Charjus Ltd | Administrative & support | 2024 |
| Charles Collinge Limited | Manufacturing | 2019 |
| Charles Mackintosh Associates Ltd | Professional & scientific | 2014 |
| Charles Maiden Waste Disposal Limited | Water & waste | 2003 |
| Charles Oliver Homes Ltd | Extraterritorial | 2020 |
| Charlton Properties (Hereford) Limited | Real estate | 1966 |
| Charman Services Limited | Households | 2000 |
| Charming Village PUB Limited | Hospitality | 2025 |
| Charwill (UK) Ltd | Construction | 1929 |
| Charwill Homes Ltd | Real estate | 2023 |
| Charwill Services Ltd | Construction | 2018 |
| Chasma Limited | Other services | 2015 |
| Chave Court Ltd | Households | 1987 |
| Cheeky Property Limited | Real estate | 2016 |
| Chelonist Ltd | Information & communication | 2012 |
| Chelsea & Belgravia Investments Limited | Financial services | 1984 |
| Chelvey Developments Limited | Construction | 2003 |
| Cherida Limited | Wholesale & retail | 2018 |
| Cherished Funerals Ltd | Other services | 2021 |
| Cherry Build Ltd | Construction | 2020 |
| Cherry Rock Limited | Agriculture & fishing | 2006 |
| Cherryton Ltd | Financial services | 2021 |
| Cheskie Ltd | Wholesale & retail | 2017 |
| Chess HR Consulting Limited | Administrative & support | 2023 |
| Chew Meadows Limited | Financial services | 2025 |
| Chilly White Limited | Hospitality | 2019 |
| Chohk DEE Ltd | Wholesale & retail | 2025 |
| Choice Life Ltd | Wholesale & retail | 2016 |
| Choices Foundation C.I.C. | Health & social care | 2013 |
| Chomp and Chew Limited | Wholesale & retail | 2020 |
| Chris Blandford Haulage Limited | Transport & logistics | 2013 |
| Chris Cole Electrical Limited | Construction | 1994 |
| Chris Duckett (Audit) Limited | Professional & scientific | 2025 |
| Chris Hall Carpentry Ltd | Construction | 2013 |
| Chris Hopkin Construction Ltd | Construction | 2012 |
| Chris Strange Building and Carpentry Ltd | Construction | 2013 |
| Chris Symons Consulting Limited | Professional & scientific | 2022 |
| Chris Wheelhouse & Co Ltd | Construction | 2016 |
| Christian Broadcasting Network (UK) | Other services | 2002 |
| Christopher John Ltd | Professional & scientific | 2025 |
| Chrome Ventures Ltd | Professional & scientific | 2004 |
| Chrysalis Worldwide Limited | Administrative & support | 2008 |
| Church Street Clinic Ltd | Health & social care | 2025 |
| City Auto Paints Limited | Wholesale & retail | 2019 |
| CJ Communications Limited | Wholesale & retail | 2023 |
| CJB Leadership and Consultancy Ltd | Professional & scientific | 2022 |
| CJE Electrical Ltd | Construction | 2026 |
| CJG Propertyservices Ltd | Construction | 2024 |
| Cjib Limited | Financial services | 2013 |
| CJP Broadcast Service Solutions Ltd | Information & communication | 2011 |
| CJT Trading Ltd | Wholesale & retail | 2020 |
| Claire Vaughan Designs Ltd | Wholesale & retail | 2016 |
| Clan P J Limited | Information & communication | 1988 |
| Clandestine Training Ltd | Administrative & support | 2021 |
| Clare L Jenner Limited | Professional & scientific | 2024 |
| Claric Technical Ltd | Professional & scientific | 2016 |
| Clarity Child and Educational Psychology Services Limited | Health & social care | 2024 |
| Clarke Jeffreys Insurance Brokers Limited | Financial services | 2002 |
| Clarke's Landscaping Ltd | Administrative & support | 2025 |
| Clarkson Digital Ltd | Professional & scientific | 2023 |
| Classic Drycleaners & Laundry Ltd | Other services | 2015 |
| Clay Mallet Limited | Information & communication | 2006 |
| Clayfield Create 1 Ltd | Financial services | 2023 |
| Clayfield Property Solutions Limited | Real estate | 2018 |
| Claypitt Ltd | Hospitality | 2016 |
| Clayton Capital Investments Limited | Real estate | 2024 |
| Clean Agents (Midlands) Ltd | Administrative & support | 2020 |
| Clean Clean Cleaning Services Limited | Administrative & support | 2024 |
| Cleanmy Ltd | Wholesale & retail | 2007 |
| Clear and Clean (Bristol) Limited | Manufacturing | 2019 |
| Clear Capital Wealth Ltd | Financial services | 2017 |
| Clear Minds Dog Training Limited | Other services | 2021 |
| Clear Storage Limited | Real estate | 2016 |
| Clearview Cleaning Services (Hereford) Limited | Administrative & support | 2000 |
| Clearview Industrial Ltd | Real estate | 1970 |
| Clegg Solutions Limited | Arts & recreation | 2013 |
| Clehonger Plant Hire Limited | Construction | 1995 |
| Clever Commercial Finance Limited | Financial services | 2021 |
| Click Big Limited | Wholesale & retail | 2023 |