| BRK Coaching Services Ltd | Administrative & support | 2019 |
| Broughton Limited | Real estate | 2022 |
| Brownwood Biomass Limited | Wholesale & retail | 2014 |
| Bttlxe Ltd | Information & communication | 2003 |
| Budlake Nursery Limited | Wholesale & retail | 2012 |
| Building Services Projects (UK) Limited | Construction | 2011 |
| Building Software Limited | Information & communication | 1995 |
| Buildscape Devon Ltd | Administrative & support | 2018 |
| Bulkgear Engineering Limited | Wholesale & retail | 2023 |
| Bullion Vault Collectibles Ltd | Wholesale & retail | 2025 |
| Burrow Court Management Company Limited | Administrative & support | 1988 |
| Bury Waste Company Limited | Water & waste | 2019 |
| Bush & Wilton Limited | Manufacturing | 2001 |
| Business Through Stories Limited | Extraterritorial | 2024 |
| BV Box Limited | Real estate | 2022 |
| BV7 Investments Limited | Financial services | 2025 |
| C & G Pet Foods Limited | Wholesale & retail | 2000 |
| C & P ROE LLP | | 2010 |
| C J Lewin Limited | Professional & scientific | 2013 |
| C2C Planning Consultants Limited | Administrative & support | 2008 |
| C2EPOS LLP | | 2012 |
| C2EPOS Systems Ltd | Information & communication | 2017 |
| CA Roofing South West Limited | Construction | 2013 |
| Cadeleigh Devco Limited | Construction | 2024 |
| Cadeleigh Estates Limited | Real estate | 2003 |
| Cadeleigh Farmco Limited | Agriculture & fishing | 2024 |
| Cadeleigh Holdco 1 Limited | Financial services | 2024 |
| Cadeleigh Holdco 2 Limited | Financial services | 2024 |
| Cadeleigh Nominee Limited | Extraterritorial | 2003 |
| Cadeleigh Properties (Barnstaple) Ltd | Real estate | 2023 |
| Cadeleigh Properties Limited | Administrative & support | 2018 |
| Cadeleigh Properties Nominees Limited | Administrative & support | 2018 |
| Cafe Licious Tiverton Ltd | Hospitality | 2016 |
| Callcloser Limited | Administrative & support | 2025 |
| CAN I Go and Play NOW Limited | Education | 2019 |
| Canteron Property Ltd | Other services | 2022 |
| Capham Ltd | Professional & scientific | 2013 |
| Cargo - TEK Systems and Services (IT) Ltd | Information & communication | 2022 |
| Carian Motors Ltd | Manufacturing | 2011 |
| Carjon South West Limited | Real estate | 2024 |
| Carl Schmieder Limited | Wholesale & retail | 1983 |
| Carolina Blinds & Curtains (South West) Ltd | Other services | 2016 |
| Casa China (UK) Ltd | Extraterritorial | 2002 |
| Castlemead Centre LLP | | 2013 |
| Cater & Day Limited | Professional & scientific | 1991 |
| Cbct Support Limited | Health & social care | 2017 |
| Cedar Court (Tiverton) Management Company Limited | Real estate | 2006 |
| Central Flow Tiverton Ltd | Construction | 2023 |
| Centric Exhibitions Ltd | Administrative & support | 2024 |
| Centric Project Management Ltd | Administrative & support | 2022 |
| Cerulean Capital Limited | Professional & scientific | 2021 |
| CF 4TC Ltd | Arts & recreation | 2022 |
| CH Housebuild Ltd | Construction | 2025 |
| Chameleon Retail Corfe Ltd | Real estate | 2009 |
| Charles Birts Consultancy Services Limited | Professional & scientific | 2002 |
| Charles Somers Investments Limited | Real estate | 2015 |
| Charles Somers Locations Limited | Other services | 2010 |
| Cherry Tree Asset Management Ltd | Real estate | 2017 |
| Chevithorne Barton Limited | Professional & scientific | 2024 |
| Chieflowman Farm Ltd | Administrative & support | 2005 |
| Chilla Open Space Management Company Limited | Households | 2024 |
| Chiltern Surveys Limited | Construction | 1999 |
| Chris Wyatt Golf Ltd | Wholesale & retail | 2022 |
| Chrisgregsonyoga Ltd | Other services | 2023 |
| Churches Housing Action Team (Devon) Limited | Health & social care | 1995 |
| Churchwood Estates Limited | Construction | 1989 |
| Ciderlands Ltd | Manufacturing | 2019 |
| Circle Seven Studio Ltd | Information & communication | 2015 |
| City & West Consultants Limited | Professional & scientific | 2006 |
| CJG Services (SW) Ltd | Administrative & support | 2022 |
| Clarence & Bean Limited | Wholesale & retail | 2007 |
| Clarian Limited | Professional & scientific | 2001 |
| Classic Bike Hire Limited | Construction | 1996 |
| Cleaning South West Ltd | Administrative & support | 2019 |
| Clearpath International Limited | Financial services | 2025 |
| Cleave Farm Limited | Agriculture & fishing | 2018 |
| Cleeve Taxation Services Limited | Professional & scientific | 1998 |
| Cleofian Enterprises Limited | Financial services | 2015 |
| Cloak & Dagger Limited | Professional & scientific | 2009 |
| Cloudcity IT Ltd | Information & communication | 2014 |
| Cmkm Property Services Ltd | Real estate | 2025 |
| CMM Consulting Engineers Limited | Construction | 2016 |
| Cnlm Consulting Limited | Professional & scientific | 2025 |
| Co-Habitat Limited | Information & communication | 2005 |
| Codeforge Systems Ltd | Information & communication | 2025 |
| Cole Agri-Trading Ltd | Agriculture & fishing | 2019 |
| Colette Liebenberg Design Ltd | Professional & scientific | 2015 |
| College Court (Brighton) Freehold Limited | Households | 2025 |
| Colman Builders Ltd | Construction | 2022 |
| Colourcolt Limited | Construction | 1988 |
| Combeshead Farm Limited | Agriculture & fishing | 2022 |
| Comfort Home Care Devon Ltd | Health & social care | 2018 |
| Compare Top 10 Limited | Financial services | 2019 |
| Complete Consulting & Training Limited | Professional & scientific | 2017 |
| Composite Design and Innovation Limited | Professional & scientific | 2014 |
| Connie’S Clinic Ltd | Other services | 2023 |
| Connie’S Laser Lounge Ltd | Other services | 2026 |
| Contagious Marketing Limited | Wholesale & retail | 2017 |
| Coombe Farm Livestock Ltd | Agriculture & fishing | 2013 |
| Coombeland Farm LLP | | 2017 |