| Fron Sport Clubs Ltd | Arts & recreation | 2025 |
| Frsf Solutions Ltd | Professional & scientific | 2020 |
| Future Ferments Ltd | Manufacturing | 2025 |
| G & B Finance Holdings Limited | Financial services | 2015 |
| G & B Finance Limited | Financial services | 2001 |
| G Burt Developments Ltd. | Construction | 2004 |
| G M Roofing Co Ltd | Construction | 2024 |
| G P H Carpentry Limited | Construction | 2008 |
| G&B Finance (SW) Limited | Financial services | 2010 |
| Gabriella's Container Ltd | Hospitality | 2023 |
| Gaia Renewables Ltd | Construction | 2023 |
| Gain Consulting Limited | Professional & scientific | 2024 |
| Galleon Court RTM Company Limited | Households | 2023 |
| Galvin Developments Limited | Real estate | 2022 |
| Galvin Enterprises Limited | Hospitality | 2014 |
| Galvin Operations Limited | Hospitality | 2024 |
| Galvin Ventures Limited | Real estate | 2024 |
| Game Server Integrations Limited | Information & communication | 2014 |
| Gannel 76 Limited | Real estate | 2016 |
| Gannel Heating and Plumbing Ltd | Construction | 2024 |
| Gannel Solutions Limited | Administrative & support | 2015 |
| Gareth Bilkey Building Contractors Limited | Construction | 2019 |
| GAS Shack Limited | Wholesale & retail | 2007 |
| Gather & Glide Ltd | Arts & recreation | 2021 |
| GDM Doors Ltd | Construction | 2019 |
| Genie Products Ltd | Wholesale & retail | 2025 |
| Gentle Dental (Mylor Bridge) Ltd | Health & social care | 2013 |
| Geoastur Limited | Professional & scientific | 2016 |
| GET Boxed Limited | Wholesale & retail | 2017 |
| GET Landscaped Ltd | Administrative & support | 2014 |
| Gibbons Motor Co Limited | Wholesale & retail | 2025 |
| Gibbons Storage Co Limited | Transport & logistics | 2025 |
| Gilbury Hill Management Company Limited | Real estate | 2013 |
| Ginger & JOE Ltd | Hospitality | 2023 |
| Giulia's Kitchen Ltd | Hospitality | 2025 |
| GK Pharmacy Limited | Health & social care | 2015 |
| Glamis Homes Ltd | Real estate | 2016 |
| Glamis Properties Limited | Real estate | 2014 |
| GLO House of Aesthetics Ltd | Other services | 2023 |
| Global Energy (U.K.) Limited | Energy | 1998 |
| Global Internet Media Limited | Information & communication | 2007 |
| Glpbs Properties Ltd | Real estate | 2020 |
| Glpbs Services Ltd | Administrative & support | 2018 |
| Gluvian Growers Limited | Agriculture & fishing | 2003 |
| Goddard Electrical Contractors Ltd | Construction | 2022 |
| Gold Star Laundry Services Ltd | Other services | 2022 |
| Gold Star Security Ltd | Administrative & support | 2025 |
| Gold Star Southwest Ltd | Administrative & support | 2025 |
| Golden Bay Management Company Limited | Households | 2006 |
| Gonzo 89 Limited | Financial services | 2023 |
| Gonzo Property Limited | Real estate | 2024 |
| Good Grain Design Ltd | Manufacturing | 2025 |
| Good Grain Ltd | Manufacturing | 2020 |
| Good Select Ltd | Wholesale & retail | 2025 |
| Goodlife Prints Limited | Health & social care | 2013 |
| Goodson Mitchinson Limited | Wholesale & retail | 2023 |
| Goonamarris Ltd | Real estate | 2021 |
| Goose Rock Construction Ltd | Construction | 2025 |
| GOT Crabs Limited | Manufacturing | 2022 |
| Grace Harbour Accountancy Ltd | Professional & scientific | 2024 |
| Gran Fondo Guide Ltd | Arts & recreation | 1999 |
| Grangewood (Cornwall) Limited | Hospitality | 2011 |
| Greedless Limited | Wholesale & retail | 2023 |
| Green Earth (Cornwall) Limited | Hospitality | 2003 |
| Green Light PBS Limited | Health & social care | 2009 |
| Green Park Pharma Holdings Limited | Financial services | 2024 |
| Green Park Pharma UK Ltd | Wholesale & retail | 2022 |
| Green Star BCS Ltd | Professional & scientific | 2022 |
| Greenfern Garden Services Limited | Administrative & support | 2025 |
| Greensplash Design Ltd | Information & communication | 2023 |
| Grey House Agent Ltd | Hospitality | 2022 |
| Ground Swell Community Interest Company | Education | 2009 |
| GSD Metalwork Ltd | Professional & scientific | 2021 |
| Gsde Ltd | Hospitality | 2019 |
| GSQ Civil and Utilities Ltd | Administrative & support | 2018 |
| Guardhouse Europe Ltd | Information & communication | 2020 |
| Guernsey House Cottage Holidays Limited | Hospitality | 2024 |
| Gwel Trebarwith Residents Association Ltd | Households | 2023 |
| Gwinear Angling Limited | Agriculture & fishing | 2015 |
| Gwinear Farm Limited | Hospitality | 2014 |
| Gypsy Green Limited | Hospitality | 2026 |
| H. Days Holdings Limited | Education | 2011 |
| Halcyon Productions Ltd | Administrative & support | 2018 |
| Hallmark Property Residential UK Ltd | Construction | 1992 |
| Haloscreations Ltd | Hospitality | 2026 |
| Halwyn Road Management Company Limited | Real estate | 2018 |
| Hapem Holdings Ltd | Real estate | 2025 |
| Happy Camper Food Company Ltd | Wholesale & retail | 2025 |
| Happy Days Consultancy Limited | Education | 2002 |
| Happy Days Day Nurseries Limited | Education | 2001 |
| Happy Days South West Limited | Education | 2003 |
| Harbour Leisure Ltd | Hospitality | 2021 |
| Harbour Stone Construction Ltd | Construction | 2025 |
| Harling Richardson Limited | Real estate | 1933 |
| Harriet Close (Management Company) Limited | Households | 2019 |
| Harriet House Newquay Management Company Limited | Households | 2020 |
| Harris Brothers (Construction) Limited | Construction | 2020 |
| Harrison Thomson Bars Ltd | Hospitality | 2024 |
| Harrison Thomson Ltd | Hospitality | 2024 |
| Harrison's Electrical Contractors SW Ltd | Construction | 2022 |