| Flow Wine Bar & Kitchen Limited | Extraterritorial | 2015 |
| Flowhouse Limited | Hospitality | 2001 |
| Fluxmotion Tech Ltd | Manufacturing | 2025 |
| FM Partnership Ltd | Professional & scientific | 2023 |
| FMR Logistics Limited | Administrative & support | 2011 |
| Fnbakery Limited | Manufacturing | 2021 |
| FNS Coaching Ltd | Professional & scientific | 2026 |
| Focus Point Consulting Ltd | Administrative & support | 2019 |
| Fodar Contracting Limited | Construction | 2020 |
| Foinaven Asset Management Ltd | Financial services | 2004 |
| Fold Joinery Ltd | Manufacturing | 2026 |
| Fone World NW Ltd | Wholesale & retail | 2020 |
| Fonnax Limited | Information & communication | 2012 |
| Food Fusion 95 Ltd Limited | Manufacturing | 2019 |
| Football Fanatic Ltd | Wholesale & retail | 2026 |
| Football FUN Factory ( Community 124 ) Limited | Arts & recreation | 2024 |
| Football Knockout Ltd | Information & communication | 2025 |
| Football Services NW Ltd | Education | 2012 |
| Forbes Estate Agents Ltd | Real estate | 2018 |
| Forcer Limited | Information & communication | 2026 |
| Foresight Clinical Services Limited | Other services | 2007 |
| Forests With Impact FWI CIC | Agriculture & fishing | 2024 |
| Forever Green Garden Maintenance Services Ltd | Administrative & support | 2011 |
| Forever Jaytee Limited | Administrative & support | 2024 |
| Forge Logistics Limited | Transport & logistics | 2018 |
| Format Developments Ltd | Construction | 2026 |
| Format Holdings Ltd | Real estate | 2025 |
| Formula Components Limited | Manufacturing | 2025 |
| Forshaw Projects Ltd | Construction | 2018 |
| Fort Coffee Deansgate Ltd | Wholesale & retail | 2024 |
| Forth Bidco Limited | Financial services | 2016 |
| Fortifix Limited | Administrative & support | 2020 |
| Fortitude Financial Planning Limited | Financial services | 2002 |
| Fortron UK Limited | Wholesale & retail | 2004 |
| Fortuna Pace Ltd | Financial services | 2024 |
| Fortune MAJOR1 Ltd | Health & social care | 2016 |
| Fortunegames.Com Ltd | Financial services | 2018 |
| Forward Acceptances Limited | Administrative & support | 1978 |
| Fothergill Financial Consulting Limited | Financial services | 2015 |
| Fotograffi Agency Limited | Professional & scientific | 2013 |
| Fountains Bar Cafe Ltd | Hospitality | 2023 |
| Four Sixes Taxis Limited | Transport & logistics | 2020 |
| FOX Bespoke Ltd | Manufacturing | 2020 |
| FOX Photographic Limited | Professional & scientific | 2012 |
| FOX Print (UK) Limited | Manufacturing | 2007 |
| Foxwell Construction Consultancy Limited | Professional & scientific | 2012 |
| FP DRY Lining Limited | Construction | 2018 |
| FP Finishes Limited | Construction | 2019 |
| FP Group Holdings Limited | Financial services | 2021 |
| FPS Gruppo Ltd | Professional & scientific | 2023 |
| FPS Taxation and Accounting Services Ltd | Professional & scientific | 2020 |
| FPS Valves & Sealing Ltd | Professional & scientific | 2023 |
| Fracharlene Limited | Health & social care | 2023 |
| Francis-Ward Holdings Limited | Professional & scientific | 1973 |
| Frankie's FUN Factory Limited | Education | 2010 |
| Fraser Designs Ltd | Wholesale & retail | 2015 |
| Fraser Plumbing Ltd | Construction | 2026 |
| Freckle Boutique Ltd | Wholesale & retail | 2020 |
| Frederick's Ice Cream Limited | Manufacturing | 2003 |
| Free CCJ Advice C.I.C. | Professional & scientific | 2022 |
| Freestyle-Urban-Soccer CIC | Arts & recreation | 2010 |
| Freewheel Autos Ltd | Wholesale & retail | 2024 |
| Fresh Carnation Limited | Financial services | 2021 |
| Fresh Chopped Direct Ltd | Wholesale & retail | 2022 |
| Fresh Fits Ltd | Manufacturing | 2025 |
| Fresh Links and Media Limited | Professional & scientific | 2019 |
| Fresh Perspective Resourcing Ltd | Administrative & support | 2016 |
| Freshwater Property Limited | Construction | 2017 |
| Fretons Ltd | Health & social care | 2015 |
| Frez Ltd | Health & social care | 2023 |
| Friday Street Developments Limited | Construction | 2010 |
| Friendly Wealth Management Ltd | Financial services | 2017 |
| Fries Love Ltd | Hospitality | 2021 |
| Frinton Gallery Limited | Manufacturing | 1975 |
| Front ROW Racing Limited | Wholesale & retail | 2021 |
| Front ROW Resources Limited | Administrative & support | 2023 |
| Frontline Loft Rooms Ltd | Construction | 2021 |
| Frost Web Assets Limited | Other services | 2018 |
| FRV Consulting Ltd | Public administration | 2022 |
| Frying Scotsman Catering Services Ltd | Hospitality | 2025 |
| FS & Ogea Properties Limited | Real estate | 2025 |
| FS Car Sales Ltd | Wholesale & retail | 2018 |
| FS North Properties Ltd | Real estate | 2023 |
| FTM Solutions Essex Ltd | Construction | 2017 |
| Fuchsia Shaw Limited | Wholesale & retail | 2024 |
| Fuelsmart (UK) Ltd | Extraterritorial | 2012 |
| Fulcrum Simulator Controls Ltd | Manufacturing | 2018 |
| Fulfilmentcrowd Holdings Limited | Financial services | 2019 |
| Fulfilmentcrowd Ltd | Transport & logistics | 1992 |
| Fulfilmentcrowd Topco Limited | Financial services | 2021 |
| Fuller Houses Ltd | Construction | 2025 |
| Funding Flex Limited | Financial services | 2022 |
| Funfilled Events Ltd | Arts & recreation | 2021 |
| Furry Faces Pet Care Ltd | Agriculture & fishing | 2017 |
| Fusion Tadka Ltd | Hospitality | 2020 |
| Futura Associates Limited | Professional & scientific | 2019 |
| Future Commissioning Services Limited | Professional & scientific | 2007 |
| Future Lifestyle Limited | Extraterritorial | 2003 |
| FUTURE4 Consultancy Ltd | Information & communication | 2015 |
| Futures Leisure (Preston) Limited | Arts & recreation | 2015 |