| Express Refrigeration & Air Conditioning Services Limited | Wholesale & retail | 2000 |
| Express Vegetables Ltd | Manufacturing | 2022 |
| Extreme Compromise Ltd | Administrative & support | 1991 |
| Eyes and Prize Film Ltd | Information & communication | 2016 |
| Eyres Field Limited | Transport & logistics | 2026 |
| Ezpresso Trading Ltd | Manufacturing | 2022 |
| Fables and Food Ltd | Hospitality | 2026 |
| Faceace Beauty Ltd | Health & social care | 2017 |
| Failure IS NOT an Option Limited | Professional & scientific | 2015 |
| Fairfield Park Management (NO 3) Limited | Households | 1974 |
| Fairfields (Wool) Management Limited | Households | 1975 |
| Faith & Green Limited | Real estate | 2010 |
| Fancy Dress Superstore Limited | Manufacturing | 2014 |
| Fancys Family Farm CIC | Other services | 2011 |
| Fapve Limited | Administrative & support | 2011 |
| Faraway Coffee Limited | Hospitality | 2025 |
| Farm Cottage Tiling Limited | Extraterritorial | 2017 |
| Farmdale Computers Limited | Professional & scientific | 1993 |
| Farwell Crescent Management Company Limited | Real estate | 2015 |
| Farwood Ltd | Information & communication | 2023 |
| Fastgrowth Services Limited | Other services | 2007 |
| FBM Systems Limited | Information & communication | 2025 |
| FDI Engineering Ltd | Manufacturing | 2023 |
| FDI Technologies Ltd | Water & waste | 2024 |
| Feathertree Arts Limited | Information & communication | 2023 |
| Feed the Soul (South West) Limited | Hospitality | 2017 |
| Feelgoodfella Ltd | Hospitality | 2026 |
| Fellbon Property Co Limited | Construction | 1959 |
| Fellows Electrical Services Limited | Construction | 2015 |
| Fertility Innovations (Middle East) Limited | Professional & scientific | 2022 |
| Fertility Innovations Limited | Professional & scientific | 2010 |
| Festive Gifts Limited | Wholesale & retail | 2022 |
| Festive Installers Limited | Arts & recreation | 2012 |
| Fgdpartners Ltd | Administrative & support | 2023 |
| FGH Property Holdings Limited | Real estate | 2020 |
| FGS Advisory Emea Ltd | Information & communication | 2022 |
| FH Management (Dorset) Ltd | Other services | 2017 |
| Field Engineering (Poole) Limited | Manufacturing | 1968 |
| Fieldfare Agrieco Ltd | Professional & scientific | 2024 |
| Fields Barn (Winfrith) Residents Limited | Extraterritorial | 2007 |
| Filberts Bees Limited | Wholesale & retail | 2002 |
| Fine Art Photographic Library Limited | Professional & scientific | 1979 |
| Fineline Media Limited | Information & communication | 2012 |
| Finlay UN Limited | Professional & scientific | 2018 |
| Finney Entertainment Limited | Information & communication | 2024 |
| Finola Dwyer Productions Limited | Information & communication | 1996 |
| Fintrix Consulting Limited | Information & communication | 2012 |
| Fire Essentials Ltd | Wholesale & retail | 2018 |
| Firebird Studio Ltd | Construction | 2024 |
| Firescribe Ltd | Professional & scientific | 2023 |
| Firestop Manufacturing Limited | Manufacturing | 1999 |
| Firksy Limited | Information & communication | 2015 |
| First Class Fitness Ltd | Arts & recreation | 2018 |
| First Main Limited | Professional & scientific | 2020 |
| First Mate Limited | Administrative & support | 2003 |
| First Step Training and Consultancy Ltd | Education | 2017 |
| First Stop Kebab Limited | Hospitality | 2025 |
| Fiscal Simplex Limited | Professional & scientific | 1990 |
| Fisher & Associates Ltd | Professional & scientific | 2009 |
| Fishermans Walk Management Limited | Real estate | 2000 |
| Fitt Chiro Limited | Health & social care | 2017 |
| Fitzroy Land Limited | Construction | 2018 |
| Five Harbour View RTM Co Ltd. | Households | 2011 |
| Five the Beach Limited | Real estate | 2006 |
| Fixit Maintenance & Decorating Ltd | Administrative & support | 2011 |
| Fjell Films Ltd | Information & communication | 2025 |
| Flash Harry's Limited | Other services | 2011 |
| Flats 1-5 18A Lagland Street Limited | Households | 2026 |
| Flawless Cosmetics Dorset Ltd | Health & social care | 2025 |
| Flawless Medical Cosmetics Ltd | Health & social care | 2025 |
| Fleet Court (Portland) Limited | Households | 1969 |
| Fleet Home Improvements Limited | Real estate | 2015 |
| Flexi Cars Ltd | Real estate | 2013 |
| Flexi Space Group Limited | Real estate | 2017 |
| Flintstone Contractors Limited | Construction | 2002 |
| Floods Bars Limited | Hospitality | 2019 |
| Florence Lodge Healthcare Limited | Health & social care | 2005 |
| Florence Renovations Ltd | Real estate | 2025 |
| Flourish Psychiatry Ltd | Health & social care | 2025 |
| Flowerdew Farm Ltd | Agriculture & fishing | 2023 |
| Flowers Farm Trout Lakes Limited | Administrative & support | 2014 |
| Floyers Field Management Company Limited | Administrative & support | 2008 |
| Fluid Dynamics International Limited | Water & waste | 1974 |
| Flying Frenzy Paragliding Ltd | Arts & recreation | 2002 |
| Flyte SO Fancy Limited | Manufacturing | 2007 |
| Fmstrat Ltd | Hospitality | 2022 |
| Foke Ltd | Wholesale & retail | 2019 |
| Folly Holidays Limited | Hospitality | 2013 |
| Fond Farewell Vets Ltd | Professional & scientific | 2022 |
| Food & Environmental Ltd | Professional & scientific | 2012 |
| Food Quality Matters Ltd | Professional & scientific | 2017 |
| Ford Farms Dorset Limited | Agriculture & fishing | 2010 |
| Fordington Associates Limited | Professional & scientific | 2026 |
| Fordington Dairy (Pump House) Management Company Ltd | Households | 1999 |
| Fordington House RTM Company Limited | Households | 2024 |
| Formula Botanica Limited | Financial services | 2025 |
| Forrader Limited | Other services | 2013 |
| Forum Property Maintenance Ltd | Wholesale & retail | 2021 |
| Forza Growth Limited | Professional & scientific | 2025 |
| Fossil Farms Limited | Agriculture & fishing | 1957 |