| Enys Homes Limited | Financial services | 2025 |
| Enys Surveying Ltd | Professional & scientific | 2014 |
| Enys Woods (Camborne) Management Company Limited | Households | 2015 |
| Eprocess Technologies Ltd | Mining & quarrying | 2012 |
| Epson Construction & Interiors Ltd | Construction | 2012 |
| Ervira Ltd | Professional & scientific | 2026 |
| Erya CIC | Education | 2015 |
| ES Holdings Group Ltd | Professional & scientific | 2023 |
| Escape Swims Ltd | Other services | 2022 |
| Esprop Ltd | Real estate | 2019 |
| Essentia Property Assets Ltd | Hospitality | 2026 |
| Essentia Property Co. Ltd | Financial services | 2026 |
| Essjay Developments Ltd | Construction | 2025 |
| Estbrook Property Management Limited | Hospitality | 1987 |
| Euro (Newquay) Limited | Hospitality | 1992 |
| Euro Tool Hire and Sales (South West) Limited | Administrative & support | 2006 |
| Euroguard Solar Solutions Limited | | 2011 |
| Euroguard Trade Ltd | Other services | 2011 |
| Evans (the Docks) Limited | Transport & logistics | 1984 |
| Evans Fields Management Company Limited | Households | 2026 |
| EVE Hughes Interior Design Ltd | Professional & scientific | 2013 |
| Evental Southwest Limited | Hospitality | 2023 |
| Evergreen Tuition Ltd | Education | 2023 |
| Everlasting Postcards Ltd | Manufacturing | 2018 |
| Evlam Limited | Financial services | 2019 |
| Evocative Cornwall Limited | Extraterritorial | 2016 |
| Evolve (Devonport) Management Company Limited | Households | 2010 |
| Evolve Diagnostics Ltd | Wholesale & retail | 2024 |
| EW Racing Services Ltd | Information & communication | 2024 |
| EWG ST Austell Limited | Hospitality | 2024 |
| EWG Truro Limited | Hospitality | 2024 |
| Excalibur Investments and Holdings 2 Ltd | Real estate | 2022 |
| Excalibur Investments and Holdings Ltd | Real estate | 2020 |
| Excel Sign & Print Centre Ltd | Administrative & support | 2017 |
| Exciting Living Ltd | Professional & scientific | 2014 |
| Exede Ltd | Administrative & support | 2018 |
| Exeter Investments Limited | Extraterritorial | 2015 |
| Exmoor Asset Management Limited | Extraterritorial | 2015 |
| Exotic Watermelons Ltd | Wholesale & retail | 2026 |
| Exposure Photo Agency Ltd. | Professional & scientific | 2011 |
| Express Corporate Ltd | Professional & scientific | 2008 |
| F W Properties (Cornwall) Ltd | Real estate | 2019 |
| F&K Properties and Developments Limited | Construction | 2020 |
| F. T. Orthopaedics Ltd | Health & social care | 2014 |
| F.F.P. (Cornwall) Limited | Financial services | 2007 |
| F.J. Gibson (Group) Limited | Real estate | 1941 |
| F.P.Kitchener Limited | Construction | 1961 |
| F6P Limited | Real estate | 2016 |
| F7P Limited | Real estate | 2016 |
| F810P Limited | Real estate | 2018 |
| F9P Limited | Hospitality | 2019 |
| Fairfield Property Services Limited | Professional & scientific | 2007 |
| Fairfield Redruth Property Management Company Limited | Households | 2015 |
| Fairtree Micro Living UK Limited | Financial services | 2019 |
| Fairview Farm Limited | Energy | 2011 |
| Fairway Property Limited | Real estate | 2016 |
| Fairway Property Management Company Limited | Administrative & support | 2016 |
| Falaknaz Ltd. | Health & social care | 2023 |
| Falco Entertainment Limited | Information & communication | 2025 |
| Falmouth Apartments Management Company Limited | Households | 2019 |
| Falmouth District Pilot Boat Association(The) | Extraterritorial | 1887 |
| Falmouth Estates Management Company Limited | Real estate | 1987 |
| Falmouth Flooring Ltd | Construction | 2021 |
| Falmouth Hotel (1865) Ltd | Hospitality | 2024 |
| Falmouth Marine Adventures Ltd | Transport & logistics | 2021 |
| Falmouth Pilots LLP | | 2012 |
| Falmouth Project Ltd | Construction | 2019 |
| Falmouth Sea Safari Limited | Transport & logistics | 2024 |
| Falmouth Shipwrights Ltd | Manufacturing | 2025 |
| Falmouth Storage Solutions Limited | Transport & logistics | 2005 |
| Falmouth Student Village Limited | Construction | 2020 |
| Falmouth Water Taxi Ltd | Transport & logistics | 2026 |
| FAM One Ltd | Construction | 2025 |
| Famgu Properties Ltd | Real estate | 2002 |
| Fantasea Ltd | Other services | 2016 |
| Farla Properties Limited | Real estate | 2016 |
| Fast Forward Solutions Limited | Professional & scientific | 2010 |
| Fateh Cleaning Ltd | Administrative & support | 2024 |
| Faventium Ltd | Professional & scientific | 2025 |
| Fawom Limited | Professional & scientific | 2017 |
| FAY Page Limited | Manufacturing | 2015 |
| Fearless Accounting Ltd | Professional & scientific | 2023 |
| Fenn Build Ltd | Construction | 2026 |
| Fenroc Holdings Ltd | Real estate | 2015 |
| Fentongollan Farms Limited | Agriculture & fishing | 2003 |
| Feock Parish CIC | Transport & logistics | 2019 |
| Fern Marie Ltd | Professional & scientific | 2020 |
| Fernleigh Associates Ltd | Professional & scientific | 2021 |
| Fernleigh Residents' Association Limited | Households | 1989 |
| Ferriman Holdings Ltd | Financial services | 2026 |
| Ferriman Industries Ltd | Professional & scientific | 2026 |
| Ferris Chiropractic Ltd | Other services | 2013 |
| Ferris Garage Limited | Wholesale & retail | 1998 |
| FFS Invest Limited | Real estate | 2023 |
| FG 1453 Limited | Hospitality | 2026 |
| Fhtc Ltd | Wholesale & retail | 2017 |
| FI Knowledge MAP Limited | Extraterritorial | 2002 |
| Fiddlie Limited | Construction | 2008 |
| Fiftybyfive Ltd | Professional & scientific | 2025 |
| Figolux Limited | Manufacturing | 2014 |