| Fairview Larder Ltd | Hospitality | 2018 |
| Fairways Financial Services Limited | Financial services | 2003 |
| Family Home Creations Ltd | Construction | 2025 |
| FAN3 Limited | Information & communication | 2023 |
| Farm Wilder CIC | Agriculture & fishing | 2019 |
| Farynaventure Limited | Health & social care | 2003 |
| Fast Car Charging Ltd | Other services | 2020 |
| Fastroute Limited | Construction | 1995 |
| FAT COW Torquay Limited | Hospitality | 2018 |
| FBD Holdings Limited | Financial services | 2024 |
| FBD Palmerston Limited | Construction | 2024 |
| FD Devon C.I.C. | Other services | 2022 |
| Feaver & SON Ltd | Construction | 2019 |
| Feeding Devon LLP | | 2021 |
| Feenics Doors and Windows Limited | Construction | 2022 |
| Felix Inns Ltd | Hospitality | 2018 |
| Feltons Barber Shop Limited | Other services | 2016 |
| Feral Film and Broadcast Ltd | Information & communication | 2020 |
| Fermain Limited | Professional & scientific | 2009 |
| Fermion Holdings Limited | Financial services | 2019 |
| Fernlight Living Limited | Real estate | 2016 |
| Fibre Trading Ltd. | Wholesale & retail | 2004 |
| FID Enterprises Ltd | Professional & scientific | 2024 |
| Field System Ashburton Ltd | Wholesale & retail | 2023 |
| Fields Drylining Ltd | Construction | 2014 |
| FIG and Smoke Event Catering Ltd | Hospitality | 2020 |
| Fight Worx Academy Limited | Education | 2009 |
| Fightworx Academy Newton Abbot Ltd | Arts & recreation | 2022 |
| Figura Planning Limited | Professional & scientific | 2015 |
| Fill-Ins Recruitment Devon Limited | Administrative & support | 2014 |
| Fillx Dispense Limited | Other services | 2022 |
| Filly & Bounder Limited | Wholesale & retail | 2012 |
| Films of Integrity Limited | Information & communication | 2015 |
| Financial Investing and Trading Ltd | Other services | 2017 |
| Finman Limited | Professional & scientific | 2008 |
| Fiona Parkinson Art Limited | Wholesale & retail | 2020 |
| Fire & Electrical Solutions Ltd | Construction | 2007 |
| Fireproofing Software International Limited | Information & communication | 1995 |
| Firex Training Services Limited | Professional & scientific | 2005 |
| First Beginnings Limited | Education | 2013 |
| First Class Builders Limited | Construction | 1991 |
| First CUT Trees Limited | Administrative & support | 2022 |
| First Estimating Limited | Professional & scientific | 2021 |
| First Manufacturing Limited | Manufacturing | 1996 |
| First Systems Consultants Ltd | Professional & scientific | 2025 |
| FIRST4THERAPY Limited | Health & social care | 2016 |
| Fishacre Close Limited | Construction | 2025 |
| Fistral Hub Limited | Information & communication | 2002 |
| Fitch Financial Associates Limited | Financial services | 2013 |
| Fitness Holding 1 Limited | Financial services | 2025 |
| Fittest Media Ltd | Professional & scientific | 2024 |
| Fittest PR Ltd | Professional & scientific | 2020 |
| Five Degree (South West) Limited | Construction | 2007 |
| Five Rings Communications Ltd | Professional & scientific | 2023 |
| Fixabolt Ltd | Wholesale & retail | 2022 |
| FJA Landscapes Ltd | Administrative & support | 2017 |
| Flame Marketing Limited | Administrative & support | 2014 |
| Flare (1980) Limited | Other services | 1980 |
| Flexwire Ltd | Construction | 2015 |
| FLO Allday Ltd | Professional & scientific | 2022 |
| Flooring Matters SW Ltd | Construction | 2016 |
| Florcon Developments Limited | Construction | 2022 |
| Florcon Limited | Other services | 2008 |
| Florence Capital Ltd | Financial services | 2021 |
| Flostate Limited | Wholesale & retail | 2024 |
| Flourishing Teams Limited | Health & social care | 2019 |
| Fluder Hill Consulting Limited | Professional & scientific | 2025 |
| Fluvius Bareboat Limited | Administrative & support | 2022 |
| Fluvius Tavy Limited | Administrative & support | 2015 |
| Fluvius TAW Limited | Administrative & support | 2016 |
| FMB Projects Limited | Real estate | 2012 |
| FNB Holdings Ltd | Construction | 2006 |
| Foil Flight School Ltd | Arts & recreation | 2023 |
| Folcrete Restoration Services Limited | Construction | 1994 |
| Fonn Group Limited | Information & communication | 2025 |
| Food & Drink Devon Limited | Other services | 1995 |
| Foothold Finance Ltd | Financial services | 2020 |
| Footwork Holdings Limited | Professional & scientific | 2005 |
| Footwork Solutions Limited | Information & communication | 1996 |
| Forde Park (Management) Limited | Households | 1998 |
| Forde Park (Newton Abbot) Limited | Real estate | 2008 |
| Forde Park Ltd | Households | 2019 |
| Foredowne Kennels and Cattery Ltd | Professional & scientific | 2021 |
| Forest of Dreams Limited | Agriculture & fishing | 2002 |
| Forest Road (Torquay) Limited | Households | 2023 |
| Forever Wonder Ltd | Hospitality | 2026 |
| Forge and Fyre Ltd | Professional & scientific | 2025 |
| Forgecore Construction Ltd | Construction | 2026 |
| Forgeway Holdings Ltd | Financial services | 2017 |
| Forgeway Ltd | Manufacturing | 2010 |
| Forgeway Manufacturing Ltd | Professional & scientific | 2014 |
| Formoa Ltd | Professional & scientific | 2013 |
| Fort Bovisand Developments Limited | Construction | 2004 |
| Fort Bovisand Estates Limited | Households | 2017 |
| Fortcraft Limited | Administrative & support | 2010 |
| Forthfit Limited | Other services | 2002 |
| Fortuna Traders Limited | Agriculture & fishing | 1990 |
| Fostering YOU Ltd | Information & communication | 2026 |
| Four Echoes Limited | Education | 2022 |
| Fowlers Properties Limited | Real estate | 2001 |