| Fish & Pizza Delight Limited | Hospitality | 2023 |
| Fish Composites Limited | Professional & scientific | 2013 |
| Fishbourne Watersmeet Residents Ltd | Households | 2013 |
| Fisher Dugmore Financial UK Limited | Administrative & support | 2021 |
| Fishers Pond Limited | Agriculture & fishing | 2003 |
| Fisherton Manor Farm | Agriculture & fishing | 2003 |
| Fitboost Limited | Information & communication | 2019 |
| Fitzroy Resources Limited | Financial services | 2008 |
| Five Mile Creek Limited | Administrative & support | 2020 |
| FIVE55 Action Design Ltd | Arts & recreation | 2025 |
| FIX My Mind Limited | Health & social care | 2012 |
| FIX Project Ltd | Construction | 2020 |
| Flat 3, 1 the Parade, Cowes Limited | Households | 2024 |
| FLC Blue Consulting Ltd. | Professional & scientific | 2013 |
| Fleet Tyre Network Limited | Extraterritorial | 2011 |
| Fleming Yachts (Europe) Limited | Administrative & support | 2009 |
| Flex Projects CIC | Health & social care | 2024 |
| Flicks & Mortar Ltd | Professional & scientific | 2024 |
| Flightsolve Limited | Transport & logistics | 2016 |
| Flint Bidco Limited | Financial services | 2024 |
| Flint Midco Limited | Financial services | 2024 |
| Flint Topco Limited | Financial services | 2024 |
| Flipping Records Ltd | Information & communication | 2026 |
| Flood and Drainage Limited | Professional & scientific | 2016 |
| Floor Covering Company Ltd | Construction | 2017 |
| Florence Rise Management Ltd | Households | 2013 |
| Florescape Ltd | Other services | 2022 |
| Flourish (NW) Limited | Professional & scientific | 2018 |
| Flow Lymphatics Ltd | Other services | 2025 |
| Flowerdown Property Ltd | Real estate | 2025 |
| Flowerhead Ltd | Manufacturing | 2025 |
| FLY Games Management Ltd | Information & communication | 2026 |
| FLY Odyssey UK Ltd | Agriculture & fishing | 2014 |
| Flying Circus Limited | Financial services | 2020 |
| Flying Colours Education Ltd | Education | 2019 |
| Flying Fish Media UK Ltd | Professional & scientific | 2004 |
| Fmbr Ltd | Wholesale & retail | 2024 |
| FOB Down View (Alresford) Management Co Ltd | Households | 2019 |
| Focal Property Limited | Real estate | 2016 |
| Focus Design Architecture Limited | Administrative & support | 2004 |
| Focus Medtech Limited | Professional & scientific | 2024 |
| Folly Farm Caravan Site Ltd | Hospitality | 2019 |
| Folly Farm Park Limited | Hospitality | 2025 |
| Fone & Tone Limited | Wholesale & retail | 2024 |
| Food Ukraine Ltd | Manufacturing | 2024 |
| Football Families for Justice Limited | Health & social care | 2026 |
| Footprints Project | Health & social care | 2004 |
| Footstep Active Living Limited | Real estate | 2015 |
| Footstep Living Developments Limited | Real estate | 2009 |
| Footstep Living Limited | Real estate | 2009 |
| FOR the Creators Limited | Wholesale & retail | 2020 |
| Ford Farms Arundel Limited | Agriculture & fishing | 2006 |
| Ford Werner Capital Limited | Financial services | 2016 |
| Forever Caring Limited | Health & social care | 2020 |
| Forever Young Dementia Day Care Ltd | Health & social care | 2024 |
| Forge Design Studio Limited | Professional & scientific | 2013 |
| Forma Vita Ltd | Manufacturing | 2025 |
| Formare-Group Ltd | Construction | 2025 |
| Formless Films Limited | Information & communication | 2025 |
| Formosa Estates Ltd | Real estate | 2019 |
| Formworks PM Ltd | Construction | 2021 |
| Forrest Property Leaseholds Limited | Real estate | 2022 |
| Forrest Property Services Limited | Real estate | 2020 |
| Fort Venta Ltd | Information & communication | 2022 |
| Forties Aviation LLP | | 2025 |
| Fortress Bournbrook Limited | Real estate | 2016 |
| Fortress Storage Limited | Administrative & support | 2023 |
| Fortune Favors Ltd | Other services | 2025 |
| Fossil Bay (Bracklesham) Management Company Limited | Households | 2025 |
| Fourglasswalls Ltd | Wholesale & retail | 2024 |
| Fourtify Cyber Security Ltd | Information & communication | 2021 |
| FOX Force Consulting Ltd | Information & communication | 2025 |
| FOX IR Ltd | Professional & scientific | 2017 |
| FOX Salons Limited | Other services | 2025 |
| FOX Syndication Limited | Information & communication | 2004 |
| Foxwood (Springvale) Limited | Households | 2012 |
| FP Global Signal Ltd | Professional & scientific | 2026 |
| FR Garage Ltd | Wholesale & retail | 2023 |
| Fraga Diagnostics Limited | Professional & scientific | 2015 |
| Fragola Food Ltd | Manufacturing | 2019 |
| Frances Anne Limited | Other services | 2003 |
| Francoli Ltd | Health & social care | 2026 |
| Frank Property Services Limited | Real estate | 2014 |
| Franklin Project Management Ltd | Professional & scientific | 2005 |
| Fraser Gardens (Winchester) Limited | Households | 2008 |
| Fraser Price Financial Services Ltd | Financial services | 2019 |
| Frecks Music Limited | Information & communication | 2018 |
| Free Bird LLP | | 2023 |
| Free Estates Limited | Households | 2000 |
| Freedom Ortho Ltd | Wholesale & retail | 2018 |
| Freemans Yard Management Company Limited | Real estate | 2011 |
| Freemantle & SON Ltd | Wholesale & retail | 2025 |
| Freemantle Holdings Ltd | Wholesale & retail | 2025 |
| French Global Solutions Ltd | Wholesale & retail | 2019 |
| Friary Capital Ltd | Real estate | 2024 |
| Friary Four Ltd | Real estate | 2022 |
| Friary Gardens (Winchester) Limited | Extraterritorial | 2003 |
| Frieda's Tearoom Winchester Ltd | Hospitality | 2017 |
| Friends of King Alfred Buses | Arts & recreation | 2017 |
| Friends of the Family Winchester Limited | Health & social care | 2011 |