| FPC (Coatings) Limited | Construction | 2018 |
| FPL Services Ltd | Professional & scientific | 2020 |
| FQ GEO Ltd | Administrative & support | 2026 |
| FR Management Consultant Ltd | Real estate | 2019 |
| Frackiewicz Limited | Other services | 2017 |
| Fractional IT Ltd | Professional & scientific | 2018 |
| Fralight Import Export Limited | Wholesale & retail | 2008 |
| Frameworks 2000 Limited | Information & communication | 2016 |
| Framtid Holdco Limited | Financial services | 2025 |
| Framtid Midco 4 Limited | Financial services | 2026 |
| Framtid Midco Limited | Financial services | 2025 |
| Francesca Anderson Consultancy Ltd | Administrative & support | 2018 |
| Franclair Properties Limited | Real estate | 1961 |
| Frank Nolan Limited | Other services | 2008 |
| Frank Planning Limited | Administrative & support | 2014 |
| Frank Ward Engineering Limited | Manufacturing | 2010 |
| Frankel 1878 Limited | Financial services | 2025 |
| Frankel Brow Limited | Real estate | 1997 |
| Frankel Holdings Limited | Financial services | 2021 |
| Frankie Bernard Coaching Limited | Information & communication | 2022 |
| Frankies Chicken & Grill Ltd | Hospitality | 2026 |
| Frans Boydon Nuclear Consultancy Services Ltd | Professional & scientific | 2014 |
| Fraternitas Sacerdotalis Sancti Petri Limited | Other services | 2009 |
| Frazer and Calder Ltd | Professional & scientific | 2018 |
| Frc-Logs Ltd | Administrative & support | 2023 |
| Fred Done Property Trading Group Limited | Professional & scientific | 2014 |
| Fred Dryden Limited | Other services | 2017 |
| Fred Karlsson Ltd | Wholesale & retail | 2024 |
| Fredalou Furniture Hire Holdings Limited | Financial services | 2021 |
| Fredalou Hire Group Limited | Financial services | 2025 |
| Fredalou Holdings Limited | Professional & scientific | 2000 |
| Fredalou Property Holdings Limited | Financial services | 2021 |
| Freddyb Ltd | Information & communication | 2025 |
| Frederick Hobroyd Ltd | Real estate | 2007 |
| Fredex Developments Ltd | Real estate | 2025 |
| Fredex Limited | Construction | 2023 |
| Free Love Fashion Limited | Wholesale & retail | 2024 |
| Freehill Limited | Information & communication | 2005 |
| Freehold Leisure Properties Ltd | Real estate | 2016 |
| Freelance Pipe Designs Ltd | Professional & scientific | 2019 |
| Freelance QS Ltd | Professional & scientific | 2026 |
| Freeway Automarque Limited | Wholesale & retail | 2002 |
| Freeway Leisure Ltd | Wholesale & retail | 2021 |
| French Technical Services Limited | Administrative & support | 2024 |
| Fresh Investments Limited | Wholesale & retail | 2021 |
| Fresh Start Motorcycle Ltd | Education | 2003 |
| Fresh View Consultancy Ltd | Professional & scientific | 2014 |
| Freshlet Limited | Real estate | 2009 |
| Freshmount Limited | Information & communication | 2007 |
| Freyafilmco Ltd | Information & communication | 2019 |
| Freyja Consulting Ltd | Professional & scientific | 2026 |
| Frez Developments Ltd | Real estate | 2021 |
| Friars Court Inns Ltd | Hospitality | 2024 |
| Frickley Management Company Limited | Administrative & support | 2014 |
| Fridge Rentals Limited | Wholesale & retail | 2010 |
| Fridlyand Analytics Ltd | Professional & scientific | 2018 |
| Friedandgrillwarrington Limited | Hospitality | 2025 |
| Friends of Grappenhall Library | Arts & recreation | 2011 |
| FRJ Solutions Limited | Professional & scientific | 2011 |
| FRM Aero Engine Services Ltd | Manufacturing | 2024 |
| FRM Aviation Camo Services Limited | Manufacturing | 2025 |
| FRM Aviation Services Ltd | Manufacturing | 2019 |
| FRM Medics Limited | Health & social care | 2014 |
| Frobisher Gardens Maintenance Company Limited | Households | 1985 |
| Frodshamwskayaks Limited | Administrative & support | 2019 |
| Frog and Moot Events Ltd | Other services | 2009 |
| FROMA2Z Business Solutions Ltd | Wholesale & retail | 2024 |
| Front ROW Fashion Boutique Limited | Wholesale & retail | 2018 |
| Frost Rail Ltd | Professional & scientific | 2023 |
| Frostbite Refrigeration Ltd | Administrative & support | 2013 |
| Fruitful IT Services & Consultancy Limited | Information & communication | 2016 |
| Fruition Change and Coaching Limited | Professional & scientific | 2017 |
| Fruits of Toil Limited | Manufacturing | 1983 |
| Fryers Courtyard Ltd | Hospitality | 2026 |
| FS & Sons Solutions Ltd | Construction | 2025 |
| FS Wealth Estates Limited | Real estate | 2024 |
| FSA Trading Limited | Wholesale & retail | 2024 |
| Fsfg Limited | Professional & scientific | 2018 |
| FSG Associates (UK) Ltd | Professional & scientific | 2023 |
| FSG International Limited | Real estate | 2023 |
| FSG Property Group Limited | Real estate | 2025 |
| Fsjf Dickinson Property Limited | Real estate | 2022 |
| FSL Food Limited | Hospitality | 2026 |
| FSS Fire Safety Services Limited | Administrative & support | 2017 |
| FT12 Limited | Administrative & support | 2025 |
| FT7 Cycles Limited | Manufacturing | 2022 |
| FTR Engineering Ltd | Professional & scientific | 2025 |
| FTS MAK Compassionate Care Limited | Health & social care | 2015 |
| Fubase Limited | Information & communication | 2009 |
| Fudgelicious by Belle Limited | Hospitality | 2024 |
| Fuel and Combustion Technology International Limited | Extraterritorial | 1994 |
| Fuel Hub Ltd | Manufacturing | 2019 |
| Fulcrum (NW) Limited | Wholesale & retail | 2013 |
| Full Development Ltd | Administrative & support | 2024 |
| Full Moon 2020 Limited | Real estate | 2019 |
| Full Moon 2022 Limited | Real estate | 2020 |
| Full Send Studios Limited | Information & communication | 2020 |
| Full Solutions Ltd | Professional & scientific | 2020 |
| Full Stack Testing Limited | Information & communication | 2018 |
| Full Stop Ltd | Administrative & support | 2007 |