| F.J. Stevens & SON Ltd | Other services | 2022 |
| FAL Ruan Ltd | Real estate | 2024 |
| FAR East Direct UK Ltd | Manufacturing | 2005 |
| Farm Safe Consulting Ltd | Professional & scientific | 2022 |
| Fatherford Antiques Limited | Wholesale & retail | 1999 |
| Fatherford Properties Limited | Real estate | 1999 |
| Feeping Creatures Ltd | Extraterritorial | 2010 |
| Feldspar Studio Limited | Manufacturing | 2019 |
| Fernlea Farm Limited | Transport & logistics | 2020 |
| Ferryman Polytunnels Limited | Agriculture & fishing | 2004 |
| FGN Group Ltd | Administrative & support | 2024 |
| Fidelity First Solutions LLP | | 2024 |
| Fifield Aviation Services Ltd | Manufacturing | 2019 |
| Fifth Elephant Consulting Limited | Information & communication | 1998 |
| Fine Financial Services Ltd | Professional & scientific | 2020 |
| Finning & SON Limited | Manufacturing | 2021 |
| First 4 ALL Limited | Manufacturing | 1999 |
| Five Friends Investment Limited | Other services | 2025 |
| Flinton Power Solutions Limited | Administrative & support | 2010 |
| Flotilla Media Limited | Information & communication | 2012 |
| Flush Plumbing (Devon) Ltd | Construction | 2026 |
| FLY Culture Magazine Ltd | Information & communication | 2018 |
| Fords Haulage Limited | Administrative & support | 2017 |
| Forks 2 U Limited | Wholesale & retail | 2009 |
| Forum Building Services Limited | Construction | 2023 |
| Foxwell Films Limited | Information & communication | 2015 |
| Frombcn Ltd | Information & communication | 2022 |
| FSL Bells Limited | Professional & scientific | 2003 |
| Futurity Independent Financial Solutions Limited | Financial services | 2012 |
| G & M Radford Property Management Ltd | Real estate | 2024 |
| G and D a Holdings Limited | Financial services | 2025 |
| G J Fishleigh Ltd | Construction | 2009 |
| G J Webber Tractors Limited | Manufacturing | 2012 |
| G P Plumbing, Heating & Renewables Ltd | Professional & scientific | 2013 |
| G Woolacott & SON Limited | Wholesale & retail | 2005 |
| G.T.S. Bricklaying Ltd | Construction | 2023 |
| Gabventure Ltd | Education | 2024 |
| Galaxy Dental Laboratory Limited | Health & social care | 2014 |
| Gammatech Limited | Wholesale & retail | 2017 |
| Gardner Historic Building Specialists Limited | Construction | 2022 |
| Gardner Woodland Consultancy Limited | Manufacturing | 2009 |
| Gasp Systems Limited | Wholesale & retail | 2001 |
| Gekko Investments Limited | Professional & scientific | 2015 |
| George Woods (SW) Limited | Manufacturing | 2011 |
| GH Carpentry Limited | Construction | 2016 |
| Ghostly Nights Limited | Administrative & support | 2024 |
| Gillbard Limited | Extraterritorial | 2010 |
| Ginger Zebra Limited | Wholesale & retail | 2019 |
| Glacien Ice Cream Ltd | Wholesale & retail | 2025 |
| Glasspro Software LLP | | 2005 |
| Glen Creedy Court House Management Company Limited | Real estate | 2005 |
| Glen Creedy Court Management Company Limited | Households | 2005 |
| Glisten & Gleam Cleaning Ltd | Administrative & support | 2019 |
| GNB Farm Ltd | Agriculture & fishing | 2002 |
| GNP Farm Ltd | Agriculture & fishing | 2017 |
| Golf Performance Centres (UK) Limited | Arts & recreation | 2023 |
| Gould Paradise Freehold Limited | Real estate | 2024 |
| Gould Paradise Property Limited | Real estate | 2022 |
| GP Logistic Solutions Ltd | Transport & logistics | 2023 |
| GPR Repairs Ltd | Wholesale & retail | 2017 |
| Graphic Electronics Limited | Manufacturing | 1994 |
| Graphic PLC | Manufacturing | 1971 |
| Grassroots Systems Limited | Information & communication | 1997 |
| Gravy Train Ltd | Wholesale & retail | 2025 |
| Great Gutton Limited | Hospitality | 2009 |
| Greatest Mindset Limited | Health & social care | 2026 |
| Greener Shed & Garden Rooms Ltd | Other services | 2024 |
| Greenway Produce Limited | Wholesale & retail | 2014 |
| Grills Renovations & Refurbishments Ltd | Construction | 2013 |
| Groop PAY Ltd | Information & communication | 2025 |
| Groove Inspection Ltd | Information & communication | 2015 |
| Grover Electrical Limited | Construction | 2023 |
| GSS Devon Property Holdings Ltd | Real estate | 2026 |
| GSS Property South West Limited | Real estate | 2010 |
| Gushsay Limited | Administrative & support | 2019 |
| H R P Construction Limited | Construction | 2006 |
| H W Martin & Co. LLP | | 2009 |
| Haddleton Knight Limited | Professional & scientific | 2015 |
| Hadley Jones Limited | Professional & scientific | 2024 |
| Hamilton First Limited | Professional & scientific | 2014 |
| Hand Crafted Steel Ltd | Manufacturing | 2024 |
| Handcraft and Heritage Ltd | Wholesale & retail | 2024 |
| Harefield Wedding Bar Ltd | Hospitality | 2025 |
| Harrison & SON (Consultancy) Limited | Information & communication | 2006 |
| Haven (Devon) Limited | Real estate | 2002 |
| Haven Homes Cornwall Limited | Real estate | 2012 |
| Hawkins Fern Tax Ltd | Professional & scientific | 2025 |
| Hawks Dawn Ltd | Professional & scientific | 2022 |
| Haykam Ltd | Health & social care | 2024 |
| Hayne Devon Ltd | Real estate | 2015 |
| Hayne Events Limited | Hospitality | 2024 |
| Hazken Training Limited | Education | 2024 |
| HBV Capital Ltd | Financial services | 2012 |
| HCD South West Ltd | Construction | 2013 |
| Heidi Marie Limited | Other services | 2008 |
| Helena the Song Limited | Arts & recreation | 2006 |
| Heli-Jet Aviation Ltd | Administrative & support | 2009 |
| Helmores Estate Agents LLP | | 2008 |
| Helmores Limited | Real estate | 2000 |
| Hensley Farm Ltd | Agriculture & fishing | 2005 |