| Cedar Court Wellington Management Limited | Households | 1984 |
| Cedar Falls Golf Ltd | Arts & recreation | 2021 |
| Cedar Falls Limited | Construction | 1966 |
| Cedar FIC Limited | Construction | 2025 |
| Cedar Way Great Bentley Ltd | Financial services | 2023 |
| Ceejay Healthcare Limited | Health & social care | 2021 |
| CEI Participations Ltd | Financial services | 2018 |
| Celandine Close Management Company Ltd | Households | 2022 |
| Celestion Properties Ltd | Real estate | 2021 |
| Celestiva Limited | Professional & scientific | 2025 |
| Cella Capital Ltd | Real estate | 2025 |
| Celuclad Holdings Limited | Administrative & support | 2006 |
| Celuclad Limited | Construction | 1982 |
| Central Hydrogen Ltd | Energy | 2020 |
| Central Surgery Surbiton Ltd | Health & social care | 2023 |
| Centre for Outdoor Activity and Community Hub | Arts & recreation | 2012 |
| Centre for Research Into Environment and Health (Creh) Ltd | Professional & scientific | 1998 |
| Cephar Sports Limited | Wholesale & retail | 2026 |
| Cerashield Limited | Manufacturing | 2023 |
| Cerc Lettings Limited | Real estate | 2024 |
| Cerc Properties Limited | Construction | 2019 |
| Cergus Group Limited | Administrative & support | 2017 |
| Certa Consulting Limited | Professional & scientific | 2014 |
| Certification UK Limited | Professional & scientific | 2008 |
| CF Financial Limited | Education | 2017 |
| CFC Services Limited | Construction | 2015 |
| CFO on Call Ltd | Professional & scientific | 2022 |
| CGI Music Ltd | Arts & recreation | 2012 |
| CGP Farming Ltd | Agriculture & fishing | 2024 |
| CH Marsh Limited | Real estate | 2005 |
| CH Property & Accommodation Ltd | Hospitality | 2025 |
| Chachoos Food Ltd | Hospitality | 2024 |
| Chai-Luda Consulting Limited | Professional & scientific | 2021 |
| Chalkup Ltd | Arts & recreation | 2022 |
| Challick Hill Services Ltd | Agriculture & fishing | 2022 |
| Chamberlain Builders Limited | Construction | 2025 |
| Chamberlain House Taunton Management Company Limited | Households | 1996 |
| Chancery House Finance Limited | Financial services | 2003 |
| Changeovers 123 Ltd | Administrative & support | 2025 |
| Chanin & Thomas Limited | Real estate | 2026 |
| Chantilly Developments Limited | Real estate | 2002 |
| Chantry Farm Management Company Limited | Households | 2008 |
| Chapel Consultancy Limited | Professional & scientific | 2019 |
| Chapel Rowe Ltd | Wholesale & retail | 2007 |
| Chapter Four Maintenance & Security Ltd | Construction | 2021 |
| Character Graphics Limited | Manufacturing | 1988 |
| Chard Auto CUT Limited | Wholesale & retail | 2025 |
| Chard Builders Limited | Wholesale & retail | 2004 |
| Charis Without Borders Ltd | Hospitality | 2025 |
| Charles Dickens Court RTM Company Limited | Real estate | 2006 |
| Charles Farrington Ltd | Wholesale & retail | 2015 |
| Charles William Relocations Ltd | Transport & logistics | 2026 |
| Charlet Properties Ltd | Real estate | 2019 |
| Charley Elizabeth Events Ltd | Administrative & support | 2018 |
| Charlie Cabs Limited | Transport & logistics | 2024 |
| Charlotte Elizabeth Hair Ltd | Other services | 2022 |
| Charlotte Read Property Law Limited | Professional & scientific | 2025 |
| Chart Clinic Limited | Health & social care | 2016 |
| Charterhouse Consultancy Limited | Financial services | 1990 |
| Chartfield Property Ltd | Real estate | 2021 |
| Chasegreen Limited | Professional & scientific | 1985 |
| Chateau 58 Limited | Hospitality | 2024 |
| Chatford Import & Export Limited | Administrative & support | 2002 |
| Check Auto Limited | Transport & logistics | 2025 |
| Cheddon Services Limited | Transport & logistics | 2009 |
| Chedzoy and Gothard Limited | Agriculture & fishing | 2009 |
| Chedzoy Butterworth Limited | Professional & scientific | 1997 |
| Cheldon Properties Ltd | Construction | 2021 |
| Chelon Creative Ltd | Administrative & support | 2019 |
| Chelston Direct Limited | Wholesale & retail | 2007 |
| Chelston Heath Farming Limited | Agriculture & fishing | 2020 |
| Chelston Heath LLP | | 2020 |
| Chelston Management Services Limited | Real estate | 1990 |
| Chelston Roofing Limited | Construction | 2022 |
| Cheltenham CAD Services Limited | Professional & scientific | 2007 |
| Chelvey Property Ventures Limited | Construction | 2004 |
| Cherith Enterprise Limited | Health & social care | 2022 |
| Cherries Events Ltd | Hospitality | 2023 |
| Cherry Lace Products Limited | Other services | 2024 |
| Cherry Orchard Consulting Ltd | Professional & scientific | 2016 |
| Cherry Strategic Limited | Professional & scientific | 2022 |
| Cherry Tree Mews (CSL) Management Company Limited | Households | 2017 |
| Cherwyn Developments Limited | Construction | 2018 |
| Chester Trading Ltd | Wholesale & retail | 2024 |
| Chesterman Homes Ltd | Real estate | 2025 |
| Chesters Commercial Holdings Limited | Financial services | 2018 |
| Chesters Harcourt Limited | Real estate | 2014 |
| Chestnut Farm (Yatton) Management Limited | Households | 2023 |
| Chestnut Property (Buckland) Limited | Financial services | 2022 |
| Chestnut Property Developments (Buckland) Limited | Construction | 2022 |
| Chestnut Property Developments Limited | Construction | 2021 |
| Chestnut Property Estates Limited | Financial services | 2021 |
| Children’S Healthy Futures Limited | Health & social care | 2026 |
| Chillington Properties Limited | Real estate | 2020 |
| Chilliswood Crescent RTM Company Limited | Households | 2009 |
| Chillys Enterprise Limited | Hospitality | 2019 |
| Chime HR Ltd | Administrative & support | 2024 |
| Chipmunk (South West) Limited | Other services | 2009 |
| Chipstable Coffee Company Limited | Manufacturing | 2026 |
| Chipstable Produce Limited | Agriculture & fishing | 2004 |