| Found and Fine Limited | Hospitality | 2020 |
| Foundry Court Limited | Households | 1989 |
| Fountain Rock Coffee Roasters Limited | Manufacturing | 2018 |
| Four Seasons Licensing and Merchandising Limited | Professional & scientific | 2014 |
| Fourgates Management Company Limited | Households | 1984 |
| Fourniers Limited | Manufacturing | 2008 |
| Fowler Carpentry & Building Services Limited | Construction | 2002 |
| FOX Home Improvements Dorset Limited | Construction | 2018 |
| FOX Trading Group Ltd | Wholesale & retail | 2023 |
| Foxhaven Ltd | Professional & scientific | 2023 |
| Fpcl Investment Ltd | Real estate | 2023 |
| Fpcl Land Ltd | Financial services | 2026 |
| Frake D Limited | Wholesale & retail | 2017 |
| Frampton & Edwards Ltd | Education | 2021 |
| Frampton Millennium Green Limited | Agriculture & fishing | 2011 |
| Frampton Park Limited | Households | 2017 |
| Frampton Renovations Limited | Construction | 2025 |
| Francesca Jane Limited | Professional & scientific | 2025 |
| Francis Management Company Limited | Real estate | 2017 |
| Frankly Living Limited | Manufacturing | 2024 |
| Franses Design Limited | Professional & scientific | 2024 |
| Fred Pope Engineering Services Limited | Professional & scientific | 2003 |
| Frederick L.Mabb,Limited | Wholesale & retail | 1951 |
| Freedom Stairlifts Limited | Administrative & support | 2005 |
| Friary Court (Dorchester) Management Company Limited | Households | 1984 |
| Friary Lane Garage Development Company Limited | Real estate | 2002 |
| Front Page Media Limited | Information & communication | 2005 |
| Frontier Physics Ltd | Professional & scientific | 2025 |
| Frontier Security Systems Limited | Construction | 1998 |
| Frontline Writing Limited | Information & communication | 2020 |
| Frs-Uk Limited | Professional & scientific | 2020 |
| FRY Media Ltd | Professional & scientific | 2024 |
| Fsports Dorset & Hants Ltd | Education | 2021 |
| Full of Energy Limited | Other services | 2017 |
| Full-Range (Electrical) Limited | Administrative & support | 2003 |
| Furtherance Limited | Professional & scientific | 2023 |
| Furzey Close (Poole) Management Company Limited | Households | 2014 |
| Future Holdings Limited | Hospitality | 1989 |
| G & J a Chandler Limited | Administrative & support | 2008 |
| G B Neville Plumbing & Heating Limited | Construction | 2003 |
| G Hamlin Limited | Construction | 2011 |
| G J Treasure Ltd | Administrative & support | 2018 |
| G K D Controls Limited | Construction | 2003 |
| G Mooney Groundwork Limited | Construction | 2017 |
| G P Porter Limited | Health & social care | 2003 |
| G Pitman Accountancy Limited | Professional & scientific | 2026 |
| G T Ireland (Contracting) Limited | Other services | 2014 |
| G W Electrical Distributors Limited | Wholesale & retail | 2022 |
| G&S Property Group Limited | Real estate | 2016 |
| G. Crook & Sons Limited | Construction | 1985 |
| G.B. Holmes Limited Partnerships | | 2000 |
| G.T. & a. Ireland Limited | Agriculture & fishing | 1965 |
| G.T. Ireland (Bere Down Farms) LLP | | 2012 |
| G.W.Ireland(Bere Down Farms)Limited | Professional & scientific | 1961 |
| Gadeed Health Ltd | Health & social care | 2021 |
| Gair Consulting Limited | Professional & scientific | 2003 |
| Galafres Limited | Information & communication | 2016 |
| Galaxy Courtesy Cars Limited | Transport & logistics | 2006 |
| Galaxy Extras Limited | Extraterritorial | 2016 |
| Gallery by the Lakes Ltd | Arts & recreation | 2018 |
| Gallery on the Square Limited | Wholesale & retail | 2005 |
| Gamekeeper Enterprises Limited | Hospitality | 2019 |
| Garcia Urology Limited | Health & social care | 2024 |
| Garden Street Limited | Real estate | 2005 |
| Garland Court Management Company (Dorchester) Limited | Households | 1983 |
| Garnet Homes Ltd | Construction | 2018 |
| Garvinjbs Limited | Wholesale & retail | 2025 |
| Gary Cheesman Limited | Construction | 2009 |
| Gary Dell Limited | Information & communication | 1989 |
| Gastek (Dorset) Limited | Construction | 2022 |
| Gastex Plumbing & Heating Services Ltd | Energy | 2016 |
| Gatton Acorn Ltd | Real estate | 2024 |
| Gauge and Gage Ltd | Wholesale & retail | 2024 |
| Gbhm Ltd | Professional & scientific | 2020 |
| Gcar Logistic Ltd | Transport & logistics | 2025 |
| Geba Medical Ltd | Health & social care | 2025 |
| Gekkou Vault Ltd | Wholesale & retail | 2026 |
| Gellert Limited | Construction | 1990 |
| Gemba-Cho Limited | Professional & scientific | 2014 |
| Gemini Event Services Ltd | Administrative & support | 2025 |
| Gemma Court (Weymouth) Management Company Limited | Households | 2016 |
| Geniusreach AI Ltd | Information & communication | 2024 |
| Geoff Owen Limited | Professional & scientific | 2014 |
| Geoff Stone Property Maintenance Limited | Construction | 2002 |
| Georgia Hudson Limited | Information & communication | 2018 |
| GET Your Shine on Ltd | Administrative & support | 2023 |
| Ggekks Consulting Ltd | Information & communication | 2022 |
| GGW Construction Ltd | Construction | 2020 |
| Giant Close Management Company Limited | Households | 2020 |
| Giaretta Associates Limited | Professional & scientific | 2010 |
| Gibbs Electrical Services Ltd | Manufacturing | 2005 |
| Gidday Limited | Education | 2014 |
| Gild Interior Studio Ltd | Professional & scientific | 2019 |
| Ginger Sheep Limited | Real estate | 2010 |
| Ginxy Intoxicology Ltd | Hospitality | 2012 |
| GJS Plumbing and Heating Ltd. | Construction | 2011 |
| Gkmedservices Ltd | Health & social care | 2022 |
| GKS Environmental Limited | Professional & scientific | 2003 |
| GL Brickworks Dorset Ltd | Construction | 2026 |
| GL7 Properties Limited | Real estate | 2013 |