| FLY Elite Limited | Administrative & support | 2018 |
| FLY Phoenix Direct Ltd | Transport & logistics | 2024 |
| FMB Estates Limited | Real estate | 2023 |
| FO Design Limited | Wholesale & retail | 2021 |
| Foburg Enterprises Ltd | Real estate | 2018 |
| Focus HSE Consultancy Ltd | Water & waste | 2020 |
| Focuspoint Studio Limited | Professional & scientific | 2025 |
| Foeyks Ltd | Extraterritorial | 2009 |
| Folded Crane Ltd | Information & communication | 2023 |
| Folly Studios Limited | Information & communication | 2026 |
| Fone Market MCR Ltd | Wholesale & retail | 2014 |
| Food Fighters Ltd | Professional & scientific | 2024 |
| Food Grill House Ltd | Hospitality | 2018 |
| Food Heist Limited | Hospitality | 2025 |
| Food Link Private Ltd | Hospitality | 2018 |
| Food on Fire Ltd | Hospitality | 2023 |
| Food Time Limited | Hospitality | 2025 |
| Foodiez PUB Int'L Limited | Hospitality | 2022 |
| Foodiko.Co.Uk Ltd | Wholesale & retail | 2025 |
| Foodworks (Cheetham Hill) Ltd | Hospitality | 2022 |
| Foodworks (MCR) Ltd | Hospitality | 2022 |
| Football Fitness FED Limited | Arts & recreation | 2017 |
| Football With SEY Ltd | Education | 2024 |
| Footlights Theatre School & Academy Limited | Arts & recreation | 2007 |
| Footlights Theatre School Limited | Arts & recreation | 2010 |
| FOR Everyone Group Ltd | Financial services | 2020 |
| Forburg Property Ltd | Real estate | 2023 |
| Fore 23 Ltd | Real estate | 2025 |
| Fore Estates Ltd | Real estate | 2025 |
| Foreign Student Services Ltd | Education | 2024 |
| Forest Hill (London) Management Company Limited | Real estate | 2023 |
| Forest Park Nominees 2 Ltd | Extraterritorial | 2022 |
| Forest Park Nominees Ltd | Extraterritorial | 2018 |
| Forest Sofa Topco Limited | Financial services | 2024 |
| Forest Sofa Trustee Limited | Financial services | 2024 |
| Forestsofaholdings Limited | Manufacturing | 2019 |
| Forever Glory Limited | Hospitality | 2022 |
| Forge UK Homes (Camden) Limited | Construction | 2022 |
| Forge UK Homes Construction Limited | Construction | 2022 |
| Forge UK Homes Ltd | Construction | 2022 |
| Forge UK Homes SPV 1 Limited | Construction | 2022 |
| Forge UK Homes SPV 2 Limited | Construction | 2023 |
| Forge UK Homes SPV 3 Limited | Construction | 2023 |
| Forge UK Homes SPV 4 Limited | Construction | 2024 |
| Forge UK Homes SPV 5 Limited | Construction | 2024 |
| Forget That Limited | Professional & scientific | 2020 |
| Form Rsrch Ltd | Wholesale & retail | 2022 |
| Form Skin Ltd | Hospitality | 2024 |
| Form Training Limited | Arts & recreation | 2016 |
| Fort & Co Properties Ltd | Real estate | 2025 |
| Fort Financial Holdings Ltd | Financial services | 2023 |
| Fortgale Ltd | Extraterritorial | 2001 |
| Forth Associates Limited | Professional & scientific | 2001 |
| Forthmoor Ltd | Extraterritorial | 2002 |
| Fortverde Limited | Real estate | 2021 |
| Forty S LAB Ltd | Construction | 2026 |
| Fortyfour Labs Ltd | Wholesale & retail | 2026 |
| Forwardpace Limited | Transport & logistics | 1993 |
| Fotenix Limited | Professional & scientific | 2018 |
| Foundher Fire Ltd | Professional & scientific | 2026 |
| Fountayne Flats Ltd | Real estate | 2023 |
| Four Car Service Ltd | Transport & logistics | 2025 |
| Four Columns Estates & Finance Ltd | Financial services | 2017 |
| Four Columns Investment UK Limited | Real estate | 2019 |
| Four Columns Realty Ltd | Real estate | 2020 |
| Four Columns Staffing Solutions Ltd | Administrative & support | 2023 |
| Fourjfx Ltd | Professional & scientific | 2023 |
| Foursynergy Group Limited | Professional & scientific | 2021 |
| Foursynergy Holdco Ltd | Financial services | 2021 |
| Foursynergy Support Partnerships Ltd | Health & social care | 2020 |
| Fourteen Eleven Films Ltd | Information & communication | 2023 |
| Foxacre Consulting Limited | Professional & scientific | 2026 |
| Foxwood Hayes Limited | Wholesale & retail | 2020 |
| Foye Realty Ltd | Real estate | 2025 |
| FPI Co 104 Ltd | Real estate | 2017 |
| FPI Co 113 Ltd | Real estate | 2017 |
| FPI Co 143 Ltd | Real estate | 2017 |
| FPI Co 149 Ltd | Real estate | 2017 |
| FPI Co 236 Ltd | Real estate | 2018 |
| FPI Co 245 Ltd | Real estate | 2018 |
| FPI Co 246 Ltd | Real estate | 2018 |
| FPI Co 249 Ltd | Real estate | 2018 |
| FPI Co 252 Ltd | Real estate | 2018 |
| FPI Co 257 Ltd | Real estate | 2018 |
| FPI Co 258 Ltd | Real estate | 2018 |
| FPI Co 259 Ltd | Real estate | 2018 |
| FPI Co 265 Ltd | Real estate | 2018 |
| FPI Co 266 Ltd | Real estate | 2018 |
| FPI Co 268 Ltd | Real estate | 2018 |
| FPI Co 272 Ltd | Real estate | 2018 |
| FPI Co 275 Ltd | Real estate | 2018 |
| FPI Co 276 Ltd | Real estate | 2018 |
| FPI Co 277 Ltd | Real estate | 2018 |
| FPI Co 279 Ltd | Real estate | 2018 |
| FPI Co 281 Ltd | Real estate | 2018 |
| FPI Co 282 Ltd | Real estate | 2018 |
| FPI Co 283 Ltd | Real estate | 2018 |
| FPI Co 289 Ltd | Real estate | 2018 |
| FPI Co 293 Ltd | Real estate | 2018 |
| FPI Co 295 Ltd | Real estate | 2018 |