| Footprints Photography Studio Limited | Administrative & support | 2016 |
| Footypro Limited | Wholesale & retail | 2026 |
| Forbrick Homes Ltd | Real estate | 2019 |
| Fordcombe Apartments (Amber Lane) Management Company Limited | Households | 2009 |
| Fordcombe Apartments Management Co Ltd | Households | 2007 |
| Fordwich Consultancy Ltd | Financial services | 2024 |
| Foreign Birds Limited | Wholesale & retail | 2026 |
| Forever Construction Limited | Construction | 2017 |
| Forge Grange Farm Limited | Agriculture & fishing | 2009 |
| Forks and Corks Ltd | Hospitality | 2021 |
| Forky Porkys Ltd | Hospitality | 2022 |
| Forma Kind Ltd | Wholesale & retail | 2026 |
| Foro Industry Co., Ltd | Extraterritorial | 2017 |
| Forrester's Pottery Limited | Arts & recreation | 2025 |
| Forstal Property Group Ltd | Real estate | 2022 |
| Fortitude Seventeen Limited | Information & communication | 2017 |
| Fortrum (UK) Limited | Financial services | 2019 |
| Fortunate Events Ltd | Other services | 2023 |
| Forward Developments Limited | Agriculture & fishing | 1965 |
| Forward International Co., Ltd | Wholesale & retail | 2022 |
| Forwardever Lifting Limited | Construction | 2017 |
| Fosseway Magazine Limited | Extraterritorial | 2021 |
| Found Ctrl Limited | Information & communication | 2026 |
| Four Build (South East) Limited | Construction | 2015 |
| Four Consult Limited | Professional & scientific | 2022 |
| Four GUN Management Limited | Households | 2016 |
| Four Property Group (Kingston Road) Limited | Construction | 2022 |
| Four Property Group (Sharman House) Limited | Real estate | 2020 |
| Four Property Group (South East) Limited | Real estate | 2018 |
| Four Seasons Lofts Limited | Construction | 2019 |
| Fournisseur Énergie Paiement Ltd | Wholesale & retail | 2025 |
| Fox&Pooch Limited | Real estate | 2018 |
| Foxcombe Lane Management Company Limited | Households | 2003 |
| Foxcrest Limited | Households | 1995 |
| Foxes Air Conditioning Ltd | Construction | 2026 |
| Foyou Industrial Company Limited | Wholesale & retail | 2016 |
| Franc Industries Limited | Other services | 2014 |
| France UP Limited | Administrative & support | 2010 |
| Francis & Cull Ltd | Construction | 2008 |
| Francis Children's Homes Ltd | Health & social care | 2026 |
| Francis Design Consultancy Limited | Professional & scientific | 2018 |
| Francis Investment Properties Ltd | Real estate | 2021 |
| Francis Supported Living Ltd | Health & social care | 2019 |
| Frank G MAY & SON Limited | Administrative & support | 2002 |
| FRANKLINHOUSE1935 Ltd | Health & social care | 2017 |
| Franks Group Ltd | Financial services | 2021 |
| Franks Maintenance Group Ltd | Construction | 2007 |
| Franks Property Ltd | Real estate | 2021 |
| Franks Property Services Ltd | Construction | 2013 |
| Franks Southern Maintenance Ltd | Construction | 2013 |
| Frannock Sports Agency Ltd | Arts & recreation | 2025 |
| FRD Homes Ltd | Real estate | 2022 |
| Freckles Training Ltd | Administrative & support | 2022 |
| Fredbroome Ltd | Construction | 2024 |
| Free-Realms Ltd | Information & communication | 2020 |
| Freedom Mobility UK Ltd | Wholesale & retail | 2012 |
| Freelancemanagement Ltd | Professional & scientific | 2019 |
| Freimax Ltd | Construction | 2026 |
| Frenche Ltd | Real estate | 2024 |
| Fresh Fruit Direct Limited | Wholesale & retail | 2016 |
| Freshbloom Limited | Real estate | 2020 |
| Freshfix Limited | Wholesale & retail | 2025 |
| Freydis Ltd | Transport & logistics | 2025 |
| Freylon Media Ltd | Information & communication | 2026 |
| Fried Fantasy Limited | Hospitality | 2026 |
| Frlo Ltd | Wholesale & retail | 2025 |
| From Life Prosthetics LLP | | 2023 |
| Frostbite Labs Ltd | Extraterritorial | 2024 |
| Froud Mechanical Services Ltd | Construction | 2023 |
| Fruvolution Limited | Wholesale & retail | 2016 |
| FT Transportation Limited | Transport & logistics | 2023 |
| Ftae Ltd | Construction | 2025 |
| Ftbw Limited | Financial services | 2013 |
| Fttp Communications Limited | Construction | 2022 |
| Ftts Property Ltd | Real estate | 2024 |
| Fudge Holdings Ltd | Professional & scientific | 2020 |
| Fuhaiyoubang Shipping Service Limited | Extraterritorial | 2020 |
| Fuhe Trading Company Limited | Manufacturing | 2024 |
| Fuji Seal Europe Limited | Manufacturing | 1986 |
| Fullstop Services Limited | Health & social care | 2019 |
| Fullstop Therapy Limited | Health & social care | 2019 |
| FUN Drum Ltd | Arts & recreation | 2023 |
| Funding and Legal Advisory LLP | | 2020 |
| Fundraising Solutions Ltd | Professional & scientific | 2017 |
| Funky Beauty Ltd | Other services | 2023 |
| Funkybod Limited | Manufacturing | 2012 |
| Funny Angels Escort Ltd | Other services | 2024 |
| Furq Consultant Services Ltd | Professional & scientific | 2025 |
| Furze Trading Ltd | Households | 2023 |
| Fusion FM Limited | Administrative & support | 2025 |
| Fusion Hire Ltd | Administrative & support | 2024 |
| Fusion Mechanical Fabrications Limited | Manufacturing | 2026 |
| Fustar Technology Ltd | Wholesale & retail | 2019 |
| Future Financial Wealth LLP | | 2012 |
| Future View Local Limited | Construction | 2016 |
| Future Wealth Management Ltd | Financial services | 2022 |
| Futureready Skills Ltd | Education | 2025 |
| Fuyin Group Limited | Wholesale & retail | 2019 |
| Fwdonly Ltd | Professional & scientific | 2023 |
| FWP & Co Homes Ltd | Construction | 2018 |