| Cingula Limited | Professional & scientific | 2025 |
| Clever Clicks SEO Limited | Information & communication | 2025 |
| Clothing Management Consultants Limited | Wholesale & retail | 1999 |
| Cloud Squared Ltd | Information & communication | 2023 |
| CMI Property Ltd | Real estate | 2018 |
| CMT (Wines) Limited | Wholesale & retail | 1998 |
| Cmwdp Holdings Limited | Financial services | 2026 |
| Cmwdp Ltd | Arts & recreation | 2011 |
| Coast VW Ltd | Wholesale & retail | 2010 |
| Combeshead Limited | Information & communication | 1994 |
| Comficare Limited | Other services | 1994 |
| Cornucopia Emporium Ltd. | Wholesale & retail | 2017 |
| COX & Robinson (Agricultural) Limited | Wholesale & retail | 1967 |
| COX Steel Services Ltd | Construction | 2021 |
| Crown Yealm Holdings Ltd | Professional & scientific | 2023 |
| Crown Yealm Limited | Real estate | 2001 |
| Croyde’S Ice Cream Parlour Ltd | Wholesale & retail | 2023 |
| CTA Electrical Contracting Ltd | Construction | 2020 |
| CTA Group Holdings Ltd | Financial services | 2024 |
| Current Electrics Devon Limited | Construction | 2023 |
| Curtis Holdings Ltd | Real estate | 2005 |
| D & G Phillips Agricultural Contractors Limited | Other services | 2012 |
| D. & I. Bridgman and SON Limited | Wholesale & retail | 1995 |
| D.P. Barthram Limited | Transport & logistics | 2006 |
| Daisy Park Limited | Wholesale & retail | 2014 |
| Dallyn's Dairy Limited | Agriculture & fishing | 2004 |
| David Howell Associates Limited | Administrative & support | 1997 |
| Davisons (Financial Services) Limited | Financial services | 1999 |
| Design Monster Group Ltd | Information & communication | 2021 |
| Devon Artificial Ltd | Wholesale & retail | 2020 |
| Devon Closewool Sheep Breeders' Society | Administrative & support | 2022 |
| Devon Deer Solutions Ltd | Agriculture & fishing | 2026 |
| Devon Driver Training Centre Limited | Education | 2025 |
| Devon Property Developments Limited | Construction | 2003 |
| Devon Property Developments Management Ltd | Households | 2021 |
| Devonshire Pest Control Limited | Other services | 2024 |
| Digby and ROE Property Developers Limited | Construction | 2001 |
| Distinctive Tattoos Limited | Arts & recreation | 2017 |
| Djembe Devon Limited | Arts & recreation | 2024 |
| DMS Security Consultancy Ltd | Administrative & support | 2023 |
| DN Thermal Ltd | Manufacturing | 2020 |
| Double O Innovations Limited | Professional & scientific | 2012 |
| Downland Consultants Limited | Hospitality | 1967 |
| Downland Leisure Limited | Extraterritorial | 2004 |
| Drywalks Limited | Wholesale & retail | 2024 |
| DUE South Enterprises Ltd | Agriculture & fishing | 2025 |
| Dullam & Co (Farmers) Ltd | Agriculture & fishing | 2003 |
| Dullam Cars Commercials Ltd | Wholesale & retail | 2026 |
| Dumnonia Contractors Ltd | Construction | 2023 |
| Duramet Roofing Limited | Construction | 2016 |
| DW Toys Limited | Wholesale & retail | 2016 |
| East Trayne Limited | Professional & scientific | 1998 |
| ECH Engineering Limited | Professional & scientific | 2013 |
| Ecosmart Window Film Solutions Ltd | Construction | 2025 |
| Edds Greengrocers Limited | Wholesale & retail | 2004 |
| Eggbeers Transport Limited | Professional & scientific | 2002 |
| Eggesford Flight Limited | Real estate | 1999 |
| Eliza of Reading Limited | Hospitality | 2002 |
| Elliot Brookes Ltd | Information & communication | 2024 |
| Elmore Boyd Precision Engineering Limited | Manufacturing | 2018 |
| Elmscott Farm Holidays Limited | Real estate | 2007 |
| Epjt Holdings Ltd | Financial services | 2026 |
| EQ Second Rounds Ltd | Wholesale & retail | 2026 |
| Equidry Limited | Wholesale & retail | 2019 |
| Estrada Limited | Wholesale & retail | 2012 |
| Euro Calibrations Limited | Extraterritorial | 2010 |
| Euro Products Europe Limited | Extraterritorial | 2010 |
| Euro Products Limited | Professional & scientific | 1983 |
| Eurocircuits (United-Kingdom) Ltd | Manufacturing | 2019 |
| Exmoor Agriculture Limited | Agriculture & fishing | 1997 |
| Exmoor Beef Limited | Wholesale & retail | 2014 |
| Exmoor Caterers Limited | Hospitality | 2003 |
| Exmoor Country Lettings Limited | Hospitality | 2014 |
| Exmoor Farm Holdings Ltd | Real estate | 2025 |
| Exmoor Group Ltd | Financial services | 2025 |
| Exmoor Hardware Ltd | Wholesale & retail | 2013 |
| Exmoor Lifts South West Ltd | Professional & scientific | 2025 |
| Exmoor Luxury Loos Limited | Other services | 2007 |
| Exmoor Media Ltd | Information & communication | 2023 |
| Exmoor Property Letting Limited | Real estate | 2008 |
| Exmoor Search and Rescue Team | Other services | 2003 |
| Exmoor Sporting Limited | Extraterritorial | 2008 |
| Exmoor Straw Limited | Transport & logistics | 2024 |
| Exmoor Wines Limited | Wholesale & retail | 2003 |
| Explorers Connect Limited | Other services | 2011 |
| Fezzy Taven Ltd | Hospitality | 2025 |
| Fieldworks Consulting Ltd | Information & communication | 2025 |
| Finalchemy Ltd | Information & communication | 2024 |
| Finehay Ltd | Administrative & support | 2024 |
| Fire Defence Holdings Ltd | Professional & scientific | 2023 |
| Fire Defence Services Limited | Construction | 2013 |
| Fire Defence Servicing Limited | Professional & scientific | 1998 |
| Forma Design + Build Limited | Manufacturing | 2005 |
| Freddie Hare Studios Limited | Professional & scientific | 2023 |
| Fremington Homes Limited | Health & social care | 2022 |
| French Group Ltd | Professional & scientific | 2025 |
| Front Office Solutions Limited | Professional & scientific | 2002 |
| Funder Island Holdings Limited | Financial services | 2021 |
| Funder Island Limited | Arts & recreation | 2014 |
| Fuzed Electrical & Mechanical Services Ltd | Construction | 2021 |