| Brodie LEA Productions Ltd | Information & communication | 2022 |
| Brook Farm Holdings Ltd | Real estate | 2020 |
| Broomborough Management Company (Totnes) Limited | Real estate | 1983 |
| Brutus and Corineus Limited | Information & communication | 2017 |
| Buckland Publishing Ltd | Information & communication | 2015 |
| Buildcamp Ltd | Information & communication | 2021 |
| Building Bridges for Peace | Education | 2013 |
| Burley Court Amenities Limited | Households | 2003 |
| Burn-Jones Wealth Management LLP | | 2012 |
| Busbys Solicitors Limited | Professional & scientific | 2015 |
| Butlermaids Limited | Administrative & support | 2010 |
| Butterworth’S Vintage Company Ltd | Wholesale & retail | 2012 |
| Byter Mill Limited | Professional & scientific | 2004 |
| C & G Builders Ltd | Construction | 2019 |
| C P B Machines Limited | Arts & recreation | 2003 |
| C.D. Security Consultants Limited | Administrative & support | 1998 |
| Caban Developments Ltd | Construction | 2026 |
| Cafe 47 Limited | Hospitality | 2024 |
| Cannon Cases Ltd | Manufacturing | 2015 |
| Canoe Adventures Ltd | Arts & recreation | 1999 |
| Capaco Holdings Limited | Financial services | 2023 |
| Capcaring Ltd | Health & social care | 2022 |
| Capton Management Company Ltd | Households | 2003 |
| Carbotixuk Ltd | Information & communication | 2025 |
| Case Record Limited | Information & communication | 2001 |
| Catherine Hale Ltd | Health & social care | 2022 |
| Caton Caton & Cobbs Trading Ltd | Wholesale & retail | 2023 |
| Cattell Construction Ltd | Construction | 2018 |
| CB Music Limited | Information & communication | 2013 |
| CBH Specialist Transport Ltd | Transport & logistics | 2021 |
| Cchr Services Ltd | Professional & scientific | 2018 |
| Cedar ASH Publishing Ltd | Information & communication | 2024 |
| CF Carpentry and Property Development Ltd | Construction | 2019 |
| Champion Marine Ltd | Professional & scientific | 2016 |
| Champion Motorcycles Ltd | Wholesale & retail | 2021 |
| Change Code Ltd | Education | 2025 |
| Chard Forest Operations Ltd | Arts & recreation | 2024 |
| Charlotte Oldman Photography Limited | Professional & scientific | 2022 |
| Chartsedge Holdings Limited | Real estate | 2017 |
| Chartsedge Limited | Real estate | 2006 |
| Checkmate Translations Limited | Professional & scientific | 2002 |
| Chelter Properties Limited | Real estate | 1992 |
| Chilley Barns Management Company Limited | Households | 1999 |
| Chiltern Advisors LLP | | 2004 |
| Choice Neurofeedback Ltd | Health & social care | 2023 |
| Choices Plus Limited | Information & communication | 2021 |
| Choose Your Insurance Limited | Extraterritorial | 2010 |
| Christian Murray Financial Services Limited | Wholesale & retail | 2001 |
| Church Minshull Community Hydro CIC | Energy | 2017 |
| Churchill Builders Limited | Construction | 2023 |
| Churchill Building Ltd | Construction | 2021 |
| Churchill Steel Ltd | Manufacturing | 2023 |
| Ciardigb Limited | Health & social care | 2016 |
| Circa TOR Ltd | Hospitality | 2023 |
| Circle of Circles CIC | Professional & scientific | 2023 |
| Citizens in Power | Other services | 2022 |
| CJK Creative Limited | Professional & scientific | 2011 |
| CJM Innovations Limited | Other services | 2023 |
| Clara Boat Co. Ltd | Professional & scientific | 2021 |
| Clarity Wealth Management LLP | | 2012 |
| Clay Lane Limited | Professional & scientific | 2010 |
| Clearline Shutters Limited | Manufacturing | 2026 |
| Clearwater Financial (UK) Ltd | Financial services | 2015 |
| Cliff View Payroll Limited | Professional & scientific | 2025 |
| Climacina Ltd | Financial services | 2022 |
| Climate Scrutiny | Professional & scientific | 2017 |
| Clinical Acumen Ltd | Health & social care | 2005 |
| Clive Parker (Bovey Tracey) Limited | Health & social care | 2012 |
| Coach House Trading Ltd | Wholesale & retail | 2018 |
| Coaching From Within Ltd | Health & social care | 2023 |
| Coast & Country Leisure Limited | Hospitality | 1997 |
| Coastal Taverns Ltd | Hospitality | 2023 |
| Coasters Coffee Company Limited | Hospitality | 2013 |
| Cody Blue Solutions Limited | Agriculture & fishing | 2023 |
| Collective Uplift Project CIC | Administrative & support | 2026 |
| Colour Design Ltd | Professional & scientific | 2004 |
| Commission Recovery Limited | Professional & scientific | 2019 |
| Common Flora Ltd | Agriculture & fishing | 2019 |
| Community Orchard Week Ltd | Other services | 2012 |
| Company Scheherazade C.I.C. | Education | 2025 |
| Compassionate Care, Day and Home Services Ltd | Health & social care | 2026 |
| Compton Athletics Limited | Wholesale & retail | 2023 |
| Conker Marine Limited | Extraterritorial | 2016 |
| Conker Shoes Limited | Manufacturing | 2013 |
| Considered Business Solutions Ltd | Professional & scientific | 2007 |
| Consulting and Soulutions CIC | Construction | 2023 |
| Contact Dark Room Ltd | Professional & scientific | 2025 |
| Contigo TOR Ltd | Professional & scientific | 2010 |
| Contract Cleaning Supplies South West Limited | Wholesale & retail | 2010 |
| Coochie Ltd | Wholesale & retail | 2009 |
| Coppertree Farm Limited Liability Partnership | | 2008 |
| Coresys Limited | Manufacturing | 2004 |
| Cormorant Charcuterie Ltd | Manufacturing | 2025 |
| Cost Management Solutions Ltd | Professional & scientific | 2007 |
| Counselling Connection Devon CIC | Health & social care | 2023 |
| Court Grange Management Company Limited | Households | 2001 |
| Covert Antenna Systems Limited | Information & communication | 2017 |
| Coyde Construction Limited | Construction | 2001 |
| Craig Hazlewood Limited | Professional & scientific | 2021 |
| Cranehill Ltd | Information & communication | 2000 |