| Brocksett Building and Fencing Limited | Construction | 2003 |
| Bryce Lovell Ltd | Agriculture & fishing | 2025 |
| BSB Catering & Event Services Ltd | Hospitality | 2018 |
| BSZ Solutions Limited | Health & social care | 2021 |
| Burn Valley Ltd | Hospitality | 2025 |
| Business Hosting Limited | Information & communication | 2017 |
| Bvra Ltd | Other services | 2020 |
| Cabana Interiors Limited | Wholesale & retail | 2022 |
| Cabinet Systems Limited | Manufacturing | 2023 |
| Calca Thai Ltd | Wholesale & retail | 2015 |
| Caldonote Ltd | Other services | 2018 |
| Car Dealer South West Ltd | Wholesale & retail | 2017 |
| Care Control Systems Limited | Information & communication | 2012 |
| Care@Home Devon Limited | Health & social care | 2026 |
| Carters Deli Ltd | Wholesale & retail | 2013 |
| Castle Street Bodmin Management Limited | Households | 2021 |
| CC Services Building and Groundworks Ltd | Construction | 2019 |
| CC Services Plant Hire Ltd | Administrative & support | 2024 |
| CEB South West Limited | Other services | 2022 |
| Chaldron Consulting Ltd | Health & social care | 2018 |
| Chance A.I. Limited | Information & communication | 2025 |
| Chaos Ergonomics Ltd | Information & communication | 1998 |
| Chapel Barn CIC | Arts & recreation | 2024 |
| Character Stay Management Limited | Hospitality | 2023 |
| Charige Limited | Professional & scientific | 2017 |
| Charitable Giving | Professional & scientific | 2008 |
| Chilcotts Law 2022 Limited | Financial services | 2022 |
| Chilcotts Law Ltd | Professional & scientific | 2010 |
| Chill Cafe Ltd | Hospitality | 2023 |
| Chore-Lea Ltd | Wholesale & retail | 2026 |
| CHP Property Management Limited | Real estate | 2015 |
| Chris Maude Consulting Limited | Professional & scientific | 2021 |
| Church Lane Autos Limited | Wholesale & retail | 1986 |
| Cigairette Ltd. | Manufacturing | 2021 |
| Claims Validation Services Limited | Mining & quarrying | 1996 |
| Clean Heat SW Limited | Construction | 2025 |
| Climate Horizons Ltd | Professional & scientific | 2021 |
| Cls-Uv Ltd | Wholesale & retail | 2007 |
| CNC Machinery Limited | Manufacturing | 2001 |
| Coastal Electrics Ltd | Construction | 2014 |
| Coastpoint Limited | Financial services | 2018 |
| Coffee and Cream (Tavistock) Limited | Hospitality | 2020 |
| Coldthorpe Holdings Limited | Wholesale & retail | 2013 |
| Cole International Consulting Limited | Professional & scientific | 2018 |
| Collacombe Farm Limited | Agriculture & fishing | 1997 |
| Commercial Lamp Supplies Limited | Wholesale & retail | 2003 |
| Compus Mentus Ltd | Professional & scientific | 2013 |
| Consolid Holdings Limited | Professional & scientific | 2021 |
| Copper LEA Ltd | Financial services | 2024 |
| Cornish Arms Ltd | Hospitality | 2013 |
| Cornish Pastels Ltd | Wholesale & retail | 2023 |
| Counsellors Southwest CIC | Health & social care | 2010 |
| Covegrange Limited | Households | 1990 |
| COX Forestry Limited | Agriculture & fishing | 2016 |
| CQ HQ T/A Roots Shoots & Boots Limited | Administrative & support | 2025 |
| Crossroads Engineering Services Limited | Manufacturing | 1998 |
| Ctcc Solutions Ltd | Professional & scientific | 2012 |
| Cyber Professional Services Limited | Information & communication | 2023 |
| Cyril Worth & SON Ltd. | Transport & logistics | 2023 |
| D & G Travel Centre of Henley Limited | Administrative & support | 2006 |
| D Parker Specialist Engineering Services Ltd | Extraterritorial | 2016 |
| D S Bennett UK Ltd | Wholesale & retail | 2001 |
| Daisy Does Flowers Ltd | Wholesale & retail | 2026 |
| Dancy Mews Management Company 2011 Limited | Other services | 2011 |
| Dartmoor Dairy Limited | Agriculture & fishing | 2017 |
| Dartmoor Dental Limited | Health & social care | 2021 |
| Dartmoor Farmers Limited | Wholesale & retail | 2008 |
| Dartmoor Financial LLP | | 2014 |
| Dartmoor Gliding Society | Professional & scientific | 1998 |
| Dartmoor Interiors Ltd | Professional & scientific | 2022 |
| Dartprint Limited | Manufacturing | 2002 |
| Darylross.Inc Limited | Professional & scientific | 2025 |
| Dawes Carpentry & Building Ltd | Manufacturing | 2024 |
| Dawson Family Group Ltd | Health & social care | 2025 |
| Dcbmc Ltd | Administrative & support | 2024 |
| DEE Ltd | Hospitality | 2025 |
| Dephos Ltd | Wholesale & retail | 2016 |
| Designed Made and Fitted Ltd | Manufacturing | 2020 |
| Devon and Cornwall Home Care Group Ltd | Financial services | 2024 |
| Devon Groundworks & Construction Ltd | Agriculture & fishing | 2018 |
| Devonshire Physiotherapy Ltd | Other services | 2019 |
| Dewberrys Ltd | Construction | 2005 |
| DFE Management Ltd | Real estate | 2015 |
| Dinnis Diggers Limited | Wholesale & retail | 2017 |
| DMJ Asset Management Ltd. | Real estate | 1990 |
| Dominic Fielder Tuition Ltd | Education | 2026 |
| Downhouse Farm Amenity Land Management Company Limited | Households | 2021 |
| Drake Legal Ltd | Professional & scientific | 2011 |
| Drake's Auctions Limited | Wholesale & retail | 2014 |
| Drakes Distillery Ltd | Wholesale & retail | 2024 |
| DRB Car Sales Limited | Wholesale & retail | 2009 |
| DRD Energy Limited | Administrative & support | 2021 |
| Driology Limited | Manufacturing | 2014 |
| Dukes Catering Ltd | Hospitality | 2012 |
| Eastwood Metals Limited | Wholesale & retail | 1998 |
| Eazy Electronics Ltd | Wholesale & retail | 2024 |
| Ecolectric Limited | Manufacturing | 2008 |
| Edwin Davis Memorial Community Interest Company | Arts & recreation | 2020 |
| EE Real Estate Partners Ltd | Real estate | 2019 |
| EH & JH Properties Ltd | Real estate | 2023 |