| Dlss Ltd | Administrative & support | 2010 |
| DNA Vehicle Services Limited | Wholesale & retail | 2015 |
| DOC Martin Merchandise Limited | Other services | 2017 |
| Donahue Law Ltd | Professional & scientific | 2025 |
| Doublebois Car and Commercial Services Ltd | Wholesale & retail | 2013 |
| DPS Stonemasons Ltd | Construction | 2024 |
| Dqpd Limited | Information & communication | 1997 |
| Dreason Barns Management Company Limited | Households | 2023 |
| Drew Memorials Limited | Manufacturing | 2015 |
| Drift Ltd | Hospitality | 2005 |
| Drinking Ltd | Information & communication | 2019 |
| DS Sandwich Deli Ltd | Hospitality | 2018 |
| Duchy Escapes Limited | Hospitality | 2025 |
| Duchy Roofing Company Ltd | Construction | 2026 |
| Duchy Scaffolding Limited | Construction | 1999 |
| Duchy Trusted Property Services Ltd | Construction | 2025 |
| Duchy Water Services Ltd | Construction | 2011 |
| Dufort Associates Limited | Professional & scientific | 2016 |
| Duraflake Limited | Construction | 2011 |
| Duratite Building Products Limited | Wholesale & retail | 2024 |
| Duratite Projects Limited | Construction | 2015 |
| Dwhite Events Ltd | Hospitality | 2025 |
| Dyernostics Ltd | Wholesale & retail | 2026 |
| Dylemma Exmouth Ltd | Wholesale & retail | 2024 |
| Dylemma Ltd | Wholesale & retail | 2022 |
| Dylemma Newton Ltd | Wholesale & retail | 2023 |
| Dylemma Online Ltd | Wholesale & retail | 2024 |
| Dylemma Torquay Limited | Wholesale & retail | 2023 |
| E & P Holiday Lets Ltd | Hospitality | 2019 |
| E Dyer Services Ltd | Construction | 2021 |
| E W Button & SON Limited | Agriculture & fishing | 2008 |
| EAR NO EAR Ltd | Real estate | 2020 |
| East Cornwall Hunt Limited | Other services | 2006 |
| East Rose Energy Assessments Ltd | Professional & scientific | 2014 |
| East ST Management Company Ltd | Real estate | 2024 |
| Edwards Marine Consultancy Limited | Information & communication | 2009 |
| Elevation Integrated Services Limited | Health & social care | 2025 |
| Elite Auto and Marine Ltd | Wholesale & retail | 2025 |
| Elite Management Falmouth Limited | Real estate | 2013 |
| Eliza Kingston Publications Limited | Information & communication | 2007 |
| Elklan Training Limited | Education | 2011 |
| Ellihoy Limited | Information & communication | 2015 |
| EM Property Development Ltd | Construction | 2025 |
| Emotivv Limited | Wholesale & retail | 2019 |
| Equine-Connect C.I.C. | Health & social care | 2024 |
| Erehwon Limited | Real estate | 2023 |
| Eric Brown Plumbing & Heating Ltd | Construction | 2023 |
| Essence London Limited | Wholesale & retail | 2015 |
| Estuary Building & Plumbing Ltd | Construction | 2014 |
| Exegen Limited | Energy | 2014 |
| EZ Maintain Ltd | Professional & scientific | 2026 |
| F D Marine Limited | Professional & scientific | 2017 |
| F. C. Sumption Developments Ltd. | Real estate | 2026 |
| Fabio Esteves Barbers Ltd | Other services | 2023 |
| Face 2 Face Financial Services South West Limited | Financial services | 2007 |
| Fairglen Management Company Limited | Real estate | 2008 |
| Falkon Construction Limited | Construction | 2002 |
| Figure Fairy Ltd | Professional & scientific | 2016 |
| Film Innovation Location Media Ltd | Arts & recreation | 2015 |
| Findnfix Ltd | Construction | 2013 |
| Fine & Cornish Ltd | Wholesale & retail | 2026 |
| Fine Shine Cleaning Limited | Administrative & support | 2021 |
| Finest AI Ltd | Other services | 2024 |
| Fiocap Limited | Financial services | 2024 |
| Fistral Wills Limited | Professional & scientific | 2010 |
| Five Design & Print Ltd | Professional & scientific | 2019 |
| Fizzlillie Ltd | Wholesale & retail | 2024 |
| Flawless Cleaning Cornwall Ltd | Administrative & support | 2025 |
| Fleurtations Cornwall Ltd | Wholesale & retail | 2018 |
| Flora Lane Flower Company Ltd | Wholesale & retail | 2017 |
| Flyfair Ltd | Professional & scientific | 2024 |
| Flying Moose Ltd | Wholesale & retail | 2016 |
| Fmti Ltd | Professional & scientific | 2021 |
| Foobar Recruitment Limited | Administrative & support | 2018 |
| Food 4 Films Limited | Real estate | 2005 |
| Food Forest Cornwall Ltd | Agriculture & fishing | 2025 |
| Footsteps Press Ltd | Information & communication | 2011 |
| FOR Better Films Ltd | Information & communication | 2023 |
| Forbes Art Consultancy Limited | Administrative & support | 2009 |
| Forestay Limited | Other services | 1992 |
| Fortis Tech Limited | Information & communication | 2010 |
| Forward Management Limited | Wholesale & retail | 2003 |
| Francis Thomas Mobile Servicing Limited | Manufacturing | 2018 |
| Franzcom Ltd | Information & communication | 2015 |
| Freddie Douglas Vehicle Solutions Ltd | Wholesale & retail | 2024 |
| Freshnest Cleaning Co South West Limited | Administrative & support | 2025 |
| Fresko Land Limited | Wholesale & retail | 2019 |
| Frontline Fire Training Ltd | Education | 2026 |
| Frost Commercial Holdings Limited | Real estate | 2025 |
| Funnels Flex Ltd | Information & communication | 2025 |
| Future Baits Limited | Manufacturing | 2008 |
| G Jenks Electrical Services Limited | Manufacturing | 2021 |
| GA Structures Ltd | Construction | 2024 |
| Galeforce Services Limited | Manufacturing | 2013 |
| Galleon Management Limited | Households | 1998 |
| Gallery Developments Ltd | Construction | 2011 |
| Genesus UK Limited | Agriculture & fishing | 2017 |
| GES Cornwall Ltd | Other services | 2019 |
| GES Southwest Limited | Construction | 2025 |
| GET Bodmin Fit CIC | Arts & recreation | 2020 |