| Fmlh (Topco) Limited | Financial services | 2021 |
| Footeprints Limited | Manufacturing | 2003 |
| Footie 4 Dorset Limited | Arts & recreation | 2004 |
| Fordington Dairy Management Company Ltd | Households | 1999 |
| Forest Carpentry Limited | Construction | 2006 |
| Forest Renovations Limited | Construction | 2011 |
| Formalequal Property Management Limited | Real estate | 1997 |
| Forsyte Shades Management Company Limited | Households | 1974 |
| Fortress Mortgage Services Limited | Financial services | 2002 |
| Fortuna Scaffolding Ltd | Extraterritorial | 1998 |
| Four Seasons Event Management Limited | Administrative & support | 2003 |
| Fourteen London Ltd | Information & communication | 2008 |
| Fowler Hire & Sales Limited | Administrative & support | 2002 |
| FOX Undertakings Limited | Hospitality | 2004 |
| Foxes Insurance Services Limited | Financial services | 2004 |
| Frampton Garage Limited | Wholesale & retail | 2001 |
| France Down Limited | Administrative & support | 1933 |
| Franklin Court (Weymouth) Limited | Households | 1982 |
| Franks & Holloway Limited | Construction | 1997 |
| Fredoor Systems Limited | | 1984 |
| Free to View Services Ltd | Wholesale & retail | 2003 |
| Freemax Associates Limited | Professional & scientific | 2003 |
| Fresh Ashp Limited | Construction | 2008 |
| Fresh Essence Limited | Wholesale & retail | 2024 |
| Fresh Graphic Solutions Limited | Manufacturing | 2009 |
| Friars Moor Livestock Health Limited | Professional & scientific | 2012 |
| Friendly Fixer's Limited | Construction | 2007 |
| Friends of the Tivoli | Arts & recreation | 1994 |
| Frost & Co Estate Agents Ltd | Real estate | 2002 |
| Fryer Mews Management Limited | Real estate | 2006 |
| Fssco UK Limited | Professional & scientific | 2024 |
| FUN2FISH Limited | Education | 2006 |
| Fusion Advertising & Design Ltd | Information & communication | 1995 |
| G & L Ellis Limited | Wholesale & retail | 2003 |
| G B Holmes Farms Limited | Agriculture & fishing | 2007 |
| G M S Consulting Services Limited | Information & communication | 2003 |
| G R Edwardes Limited | Construction | 2002 |
| G. Rowland Electrical Services Ltd | Construction | 2007 |
| G.E. Plant Services Limited | Administrative & support | 2002 |
| G.H. Richards (Chilbridge Farm) Limited | Agriculture & fishing | 1954 |
| Gallery 1 (UK) Limited | Wholesale & retail | 2007 |
| Gallium Services Limited | Hospitality | 1986 |
| Gardiners GAS & Plumbing Limited | Construction | 2003 |
| GAS Appliance Superstore Limited | Wholesale & retail | 1998 |
| Gatebay Limited | Real estate | 1997 |
| Gemaco Holdings Limited | Manufacturing | 1988 |
| Gemina Investments Limited | Construction | 2001 |
| Genforce Limited | Manufacturing | 2004 |
| Geoff Tite and Sons Limited | Other services | 2004 |
| Ghst Industries Ltd | Construction | 2023 |
| Gidiies Limited | Wholesale & retail | 2025 |
| GJB Properties Limited | Real estate | 1971 |
| Gladwish Construction and Groundworks Limited | Construction | 2003 |
| Glass Supplies Limited | Extraterritorial | 2001 |
| Glenmoor Court (Ferndown) Management Company Limited | Real estate | 2003 |
| Glidebridge Plant Limited | Construction | 2006 |
| Global Operators Limited | Wholesale & retail | 2000 |
| Global Talent Media Ltd | Information & communication | 2025 |
| Globalgoods HUB12 Ltd | Wholesale & retail | 2025 |
| Globeglen Limited | | 1987 |
| Goadsby & Harding (Commercial) Limited | Real estate | 2001 |
| Goadsby & Harding (Holdings) Limited | Professional & scientific | 1989 |
| Goadsby & Harding (Residential) Limited | Real estate | 1984 |
| Goadsby & Harding Limited | Extraterritorial | 2001 |
| Golden Spice Dorset Limited | Hospitality | 2024 |
| Goldhill Architectural Design Limited | Construction | 1998 |
| Goodgoal Group Limited | Information & communication | 2015 |
| Gosling Dinghy Craft Limited | Manufacturing | 2003 |
| Goulds (Dorchester) Limited | Wholesale & retail | 1946 |
| GP & J Baker Limited | Wholesale & retail | 1999 |
| Graham Hill Motor Technician Limited | Wholesale & retail | 2004 |
| Grassby and Sons Limited | Other services | 1954 |
| Grazedean Limited | Manufacturing | 1978 |
| Green Cape Limited | Construction | 2007 |
| Greenridge Construction Ltd | Construction | 2007 |
| Griffin 1 LLP | | 2007 |
| Grosvenor Lodge Freehold Limited | Households | 2003 |
| Growstrong Limited | Construction | 1999 |
| Gulf Marketing & Investment Limited | | 1985 |
| H. King & Sons Mechanical and Electrical Engineers Limited | Wholesale & retail | 1986 |
| H.C. Lewis and Company Limited | Construction | 1992 |
| Habib UR Rehman Deol Ltd | Wholesale & retail | 2025 |
| Hair in the Community CIC | Other services | 2024 |
| Hair Moda Limited | Wholesale & retail | 2000 |
| Hale and Murray Limited | Manufacturing | 2002 |
| Hall & Woodhouse Limited | Manufacturing | 1898 |
| Hallcare South Limited | Health & social care | 2007 |
| Hallett and Mills (Dorchester) Limited | | 1983 |
| Hambledon Estate Agents (Wincanton) Ltd | Real estate | 2008 |
| Hamiltons (Weymouth) Limited | Hospitality | 1976 |
| Hamiltons of Ringwood Ltd | Wholesale & retail | 2018 |
| Hampreston Manor Farm Limited | Agriculture & fishing | 1956 |
| Harbar Limited | Hospitality | 2003 |
| Harbour Computer Services Limited | Information & communication | 2003 |
| Harbour Lodge Management Co. Limited | Households | 1987 |
| Harbours Edge Ltd | Hospitality | 2005 |
| Hardwick Marine Services Limited | Manufacturing | 2006 |
| Harebell 100 Limited | Real estate | 2004 |
| Harker & Bullman Limited | Real estate | 1995 |
| Harmon Fabrication Limited | Manufacturing | 2007 |