| Electrosafe Power Ltd | Construction | 2011 |
| Elemental Fire Safety Ltd | Public administration | 2024 |
| Elena Vlaica Ltd | Health & social care | 2025 |
| Eleutheria Films Ltd | Information & communication | 2013 |
| Elevate Clean Limited | Administrative & support | 2025 |
| Eliot Gardens Management Limited | Hospitality | 1993 |
| Elite Inkjet Inks Ltd | Manufacturing | 2024 |
| Elite Surf Limited | Wholesale & retail | 2015 |
| Elixr Wine Limited | Wholesale & retail | 2025 |
| Elizabeth Elaris Ltd | Manufacturing | 2025 |
| Elizabeth House (Newquay) Limited | Administrative & support | 2016 |
| ELK Escapes Ltd | Real estate | 2024 |
| Ella Croft Ltd | Administrative & support | 2025 |
| Ellenglaze Properties Ltd | Hospitality | 2017 |
| Elliot Higginson Architectural Services Ltd | Professional & scientific | 2024 |
| Elliot Higginson Design & Build Limited | Professional & scientific | 2024 |
| Elsworth Electrical Contractors Limited | Construction | 2014 |
| ELY South West Consulting Limited | Professional & scientific | 2021 |
| Emergency Leak & Drain Experts Ltd | Construction | 2025 |
| Empowerher Community CIC | Education | 2026 |
| Emrose Construction Ltd | Construction | 2017 |
| Enchantment Events UK Ltd | Administrative & support | 2020 |
| Enterdine India Ltd | Hospitality | 2016 |
| ERCAN23 Ltd | Hospitality | 2025 |
| Ertach Kernow Ltd | Manufacturing | 2023 |
| ESC 2025 Limited | Financial services | 2025 |
| EST 1954 Ltd | Wholesale & retail | 2021 |
| Estuary View Management Limited | Households | 1987 |
| Etsw Ltd | Construction | 2026 |
| Euro Acoustics (Holdings) Limited | Other services | 1996 |
| Europa Court Mawgan Porth Residents Company Limited | Professional & scientific | 1987 |
| Evenflow Environment Limited | Construction | 2012 |
| Everlinked Ltd | Administrative & support | 2022 |
| Everything for Water Ltd | Construction | 2017 |
| Evgen IES Ltd | Manufacturing | 2019 |
| Evoarchitecture Ltd | Professional & scientific | 2018 |
| Evolve Property Services Limited | Construction | 2018 |
| Excess Energy Properties Limited | Real estate | 2012 |
| Execute Limited | Water & waste | 1996 |
| Exord Ltd. | Other services | 2017 |
| Expert Tool Store Ltd | Wholesale & retail | 2012 |
| F G Leach & Sons Limited | Professional & scientific | 2003 |
| F P B Electrical Limited | Construction | 2021 |
| Fabric AV Ltd | Information & communication | 2022 |
| Faronpark Limited | Extraterritorial | 1995 |
| FAV Studios Ltd | Real estate | 2023 |
| Fazlets Ltd | Real estate | 2023 |
| Feastieboys Ltd | Hospitality | 2020 |
| Fellowspark Ltd | Health & social care | 2024 |
| Fermo Ltd | Hospitality | 2025 |
| Fertility Cornwall Limited | Health & social care | 2023 |
| Field 1169 Limited | Hospitality | 2024 |
| Fifteen Cliff Road Management Co Ltd | Construction | 2017 |
| FIG Tree Consulting Limited | Construction | 2014 |
| Fine Select Ltd | Wholesale & retail | 2025 |
| Finnsup Ltd | Administrative & support | 2026 |
| Firelogpro Ltd | Information & communication | 2025 |
| Firesafekitchens Limited | Administrative & support | 2026 |
| First Point Geomatics Ltd | Professional & scientific | 2021 |
| First Steps Cornwall Ltd | Education | 2011 |
| Firstbreak Ltd | Real estate | 2011 |
| Fistral Beach Apartments Management Company Limited | Households | 2013 |
| Fistral Beach Cornwall LLP | | 2021 |
| Fistral Beach Newquay Limited | Financial services | 2020 |
| Fistral Blue Freehold Ltd | Real estate | 2019 |
| Fistral Blue Management Co. Ltd | Households | 2012 |
| Fistral Breaks Ltd | Hospitality | 2025 |
| Fistral Clothing Company Limited | Wholesale & retail | 2026 |
| Fistral Court Management Company Limited | Households | 1999 |
| Fistral Holdings Limited | Manufacturing | 2015 |
| Fistral House Freehold Management Company Limited | Households | 2019 |
| Fistral House Management Company Limited | Households | 2017 |
| Fistral Investments Limited | Information & communication | 2024 |
| Fistral Partners Limited | Professional & scientific | 2026 |
| Fistral Sands Apartments Limited | Real estate | 2002 |
| Fistral Stereo Ltd | Arts & recreation | 2025 |
| Fistralpro Ltd | Information & communication | 2021 |
| Fixbox Cornwall Ltd | Other services | 2015 |
| Fjscreartive LLP | | 2023 |
| Flamingo Blue Limited | Hospitality | 2023 |
| Flomor Project Solutions Ltd | Information & communication | 2024 |
| Florence and Fable Limited | Professional & scientific | 2023 |
| Flounders Limited | Hospitality | 2012 |
| Flow Forge Consulting Ltd | Professional & scientific | 2026 |
| Flow Sauna Ltd | Manufacturing | 2025 |
| Flowmoco Ltd | Information & communication | 2012 |
| Food Safety Consultancy (Cornwall) Ltd | Professional & scientific | 2022 |
| Football FUN Factory (Community 106) Ltd | Arts & recreation | 2023 |
| Forangay Limited | Hospitality | 1962 |
| Formack Limited | Professional & scientific | 2023 |
| Fortic Financial Services Ltd | Financial services | 2007 |
| Fourwinds Garage (Mitchell) Limited | Wholesale & retail | 2014 |
| Fraddon Flats Management Company Limited | Households | 2002 |
| Fraddon Motopark Limited | Arts & recreation | 2023 |
| Frampton & Balding Ltd. | Manufacturing | 2010 |
| Frances Mary Limited | Real estate | 2017 |
| Freier's Joinery Limited | Construction | 2016 |
| Fresh Earth Technologies Ltd | Water & waste | 2017 |
| Friendly Code Limited | Information & communication | 2017 |
| Friends of Lanherne Pound House | Manufacturing | 2012 |