| CDT Investments Limited | Construction | 2000 |
| CE Living Ltd | Real estate | 2026 |
| Cearp (SW) Ltd | Construction | 2025 |
| CEB HES Ltd | Education | 2012 |
| Cebar Ltd | Real estate | 2024 |
| CED Business Support Limited | Professional & scientific | 2019 |
| CED Special Projects Ltd | Professional & scientific | 2015 |
| Cedar Commercial Ltd | Real estate | 2025 |
| Cedar Court (Rockbeare) Management Company Limited | Households | 2016 |
| Cedar HUT Dental Limited | Health & social care | 2013 |
| Cedar Lodge Park Ltd. | Administrative & support | 2009 |
| Cedar Shade (Management Company) Limited | Households | 2009 |
| Cell and Gene Consulting Ltd | Professional & scientific | 2025 |
| Celoc Investments Ltd | Financial services | 2025 |
| Celsius Aircon Ltd | Energy | 2019 |
| Cenhinen Limited | Real estate | 2022 |
| Centella Limited | Financial services | 2020 |
| Central Bakery (Newquay) Ltd | Wholesale & retail | 2021 |
| Central Electrical Installations Limited | Wholesale & retail | 1950 |
| Central Homes (SW) Ltd | Real estate | 2025 |
| Central Trade (UK) Limited | Construction | 1997 |
| Centre for Elective Home Education Research Ltd | Education | 2023 |
| Centricity Ltd | Financial services | 2019 |
| Centurist Limited | Extraterritorial | 2014 |
| Cepheus Investment Limited | Real estate | 2020 |
| Ceramexe CIC | Manufacturing | 2022 |
| Cerberus Inspection Ltd | Mining & quarrying | 2026 |
| Ceroc Exeter Ltd | Education | 2017 |
| Certa Cito One Limited | Transport & logistics | 2021 |
| Certago Ltd | Administrative & support | 2025 |
| Certify (UK) Ltd | Information & communication | 2018 |
| Cfchospitalityrecruitment Ltd | Administrative & support | 2019 |
| CFT Property Ltd | Construction | 2013 |
| CGA Holdings Ltd | Real estate | 2017 |
| CGH Plumbing and Heating Limited | Construction | 2023 |
| CGS Bricklaying Ltd | Construction | 2024 |
| Chacko Btrm Ltd. | Real estate | 2026 |
| Chadni Pizza Express Ltd | Hospitality | 2021 |
| Chadwick Affiliate Marketing Limited | Professional & scientific | 2024 |
| Chain of Power Limited | Hospitality | 2018 |
| Chalk & Ward Advertising Limited | Professional & scientific | 1997 |
| Challis Solutions Ltd | Construction | 2025 |
| Chalmers and Sons Ltd | Construction | 2023 |
| Chambers GHL Property Limited | Real estate | 2025 |
| Chamo (Exeter) Ltd | Real estate | 2021 |
| Champion Law Ltd | Administrative & support | 2020 |
| Chance a Glance Ltd | Wholesale & retail | 2024 |
| Chandlers Walk (Block 1) Management Company Limited | Households | 1997 |
| Chandlers Walk (Block 2) Management Company Limited | Households | 1998 |
| Changing Faces Studio Limited | Other services | 2020 |
| Chants Co (Exeter) Ltd | Real estate | 2025 |
| Chapel Orchard SAC Limited | Real estate | 2022 |
| Chapel Park Holdings Limited | Construction | 2024 |
| Chaplin CS Limited | Construction | 2013 |
| Chapman Lettings Ltd | Real estate | 2021 |
| Chapter Management Consultancy Ltd | Professional & scientific | 2026 |
| Charalixel Ltd | Health & social care | 2012 |
| Charchris Homes Limited | Real estate | 2011 |
| Chargot Estates Limited | Arts & recreation | 1977 |
| Charingthay Investments Limited | Real estate | 1963 |
| Charkos Global Limited | Health & social care | 2022 |
| Charkos UK Ltd | Health & social care | 2005 |
| Charles Courtenay-Stamp Limited | Real estate | 2004 |
| Charles Crowd Limited | Financial services | 2026 |
| Charles J Ventures Ltd | Financial services | 2023 |
| Charles Shaw-Smith Medico-Legal Report Writing Limited | Professional & scientific | 2022 |
| Charlotte Illidge Ltd | Professional & scientific | 2026 |
| Charmed London Limited | Financial services | 2006 |
| Chartom Aviation Services Limited | Other services | 2022 |
| Chartom Limited | Real estate | 2022 |
| Chase Interiors Ltd | Construction | 2018 |
| Chaseoak Commercial Ltd | Real estate | 2022 |
| Chaseoak Ltd | Construction | 2017 |
| Chaseoak Properties Ltd | Construction | 2022 |
| Chasm Films Ltd | Information & communication | 2024 |
| Chasseron Limited | Manufacturing | 2017 |
| Chastanet Properties Ltd | Real estate | 2014 |
| Chateau Escapes Ltd | Hospitality | 2019 |
| Chatology Limited | Information & communication | 2025 |
| Chattia Knox Ltd | Real estate | 2026 |
| CHAYU1 Limited | Wholesale & retail | 2023 |
| Chazzmn Ltd | Manufacturing | 2020 |
| Check Fire Dampers Limited | Other services | 2021 |
| Checkflight Limited | Construction | 2002 |
| Cheeky Charms Limited | Wholesale & retail | 2013 |
| Chef of the Year Ltd | Hospitality | 2014 |
| Chemical Sound Systems Ltd | Arts & recreation | 2026 |
| Chen Analytics Ltd | Extraterritorial | 2019 |
| Chentonia Limited | Professional & scientific | 2011 |
| Cheriton Group Melville Ltd | Administrative & support | 2020 |
| Cherry and Cherry Limited | Extraterritorial | 1993 |
| Cherry Doors Limited | Real estate | 2023 |
| Cherry Grove Ltd | Wholesale & retail | 2026 |
| Cherrylands Technology Ltd | Information & communication | 2022 |
| Chery Torbay Limited | Wholesale & retail | 2023 |
| Chesil Beach Garden Services Ltd | Administrative & support | 2024 |
| Chesil Reach Management Company Ltd | Real estate | 2020 |
| Chesilton Group (UK) LLP | | 2021 |
| Chesilton Group Limited | Professional & scientific | 2020 |
| Chesterfield Enterprises Limited | Professional & scientific | 1996 |