| Four Oaks Properties Ltd | Real estate | 2018 |
| Four Oaks Property Consultancy Limited | Real estate | 2023 |
| Four Oaks Roofing Ltd | Construction | 2001 |
| Four Oaks Taxation & Accounting Services Limited | Professional & scientific | 2002 |
| Four Oaks Tennis Club Limited | Arts & recreation | 2023 |
| Four Rivers Studios Limited | Information & communication | 2026 |
| Four Winds Associates Ltd | Professional & scientific | 2015 |
| Fouroaks Executive Travel Ltd | Transport & logistics | 2025 |
| Foursight Interim Management Limited | Extraterritorial | 2012 |
| FOX Bridge Capital Limited | Real estate | 2020 |
| FOX Family Limited | Professional & scientific | 2007 |
| FOX Hollies Garage Limited | Wholesale & retail | 2010 |
| FOX Hollies Investments Limited | Real estate | 2013 |
| FOX Optical Ltd | Health & social care | 2023 |
| Foxall FS Limited | Professional & scientific | 2018 |
| Foxton Homes Limited | Real estate | 2015 |
| FPC Cosmar Ltd | Real estate | 2022 |
| Fradley Football Club Ltd | Arts & recreation | 2022 |
| Framed Forever More Limited | Wholesale & retail | 2020 |
| Fran Kizzy Ltd | Professional & scientific | 2008 |
| Francines Travel Ltd | Administrative & support | 2016 |
| Francis Building Services Limited | Construction | 2017 |
| Francis Chappel & Sons Limited | Extraterritorial | 1968 |
| Frank Grounds Limited | Administrative & support | 1943 |
| Frank Stephenson & SON (Funeral Directors) Limited | Extraterritorial | 1979 |
| Franmore Limited | Hospitality | 2023 |
| Fraser Moore Ltd | Professional & scientific | 2015 |
| Freddy's Catering Limited | Hospitality | 2026 |
| Frederick Estate Limited | Real estate | 2011 |
| Frederick W. Chitty & Co. Limited | Extraterritorial | 1945 |
| Fredk. W. Paine Limited | Extraterritorial | 1938 |
| Free 2 Dream Clothing Ltd | Wholesale & retail | 2013 |
| Freedom Bootcamps Ltd | Arts & recreation | 2013 |
| Freedom Brands Ltd | Wholesale & retail | 2021 |
| Freedom Business Support Limited | Administrative & support | 2020 |
| Freedom Marketing Limited | Administrative & support | 2024 |
| Freedom Outsourcing Limited | Administrative & support | 2021 |
| Freedom Partnerships Limited | Administrative & support | 2022 |
| Freedom Property Lettings Limited | Real estate | 2024 |
| Freedom Recruitment Capital Limited | Professional & scientific | 2022 |
| Freedom Recruitment Group Limited | Professional & scientific | 2019 |
| Freedom Recruitment RN Limited | Administrative & support | 2023 |
| Freedom Venture Group Limited | Administrative & support | 2022 |
| Fresh Beauty Clinic Limited | Other services | 2009 |
| Fresh Fitout Limited | Construction | 2019 |
| Fresh N Healthy Limited | Hospitality | 2013 |
| Fresh Paws Services Ltd | Wholesale & retail | 2024 |
| Freshpaws Dog Grooming Ltd | Other services | 2024 |
| Fresko Foods Limited | Wholesale & retail | 2010 |
| Friendly Healthcare Limited | Health & social care | 2024 |
| Friends Express Sutton Coldfield Limited | Wholesale & retail | 2026 |
| Frina Ltd | Hospitality | 2024 |
| From BUMPS2BABIES Limited | Health & social care | 2008 |
| Frontline Telecommunications Limited | Information & communication | 1999 |
| Frostbytez Technologies Ltd | Information & communication | 2023 |
| Fruitrunner Limited | Wholesale & retail | 2013 |
| Frydales Ltd | Hospitality | 2019 |
| FS Cosmetics Ltd | Wholesale & retail | 2025 |
| FS Secretarial Services Limited | Administrative & support | 2022 |
| Fsrh Limited | Real estate | 2021 |
| Fsrh Property Services Limited | Transport & logistics | 2019 |
| FT Apparel Limited | Wholesale & retail | 2023 |
| Fu:Tr Creative Ltd | Manufacturing | 2025 |
| Fulcrum Consultancy (UK) Limited | Professional & scientific | 2014 |
| Full Potential Capital (Cuisine) Limited | Hospitality | 2023 |
| Fulruter Ltd | Administrative & support | 2021 |
| Fulton Controls Ltd | Professional & scientific | 2024 |
| Functional Implementation Limited | Information & communication | 2025 |
| Fundamental Design Consultants Limited | Professional & scientific | 2013 |
| Fundamental FM Limited | Administrative & support | 2017 |
| Funeral Advisor Limited | Information & communication | 2013 |
| Funeral Arrangements Online Limited | Other services | 2012 |
| Funeral Debt Collection Limited | Extraterritorial | 2008 |
| Funeral Services London Limited | Extraterritorial | 1972 |
| Funkybear Vintage Ltd | Wholesale & retail | 2026 |
| Furhuraire Consultancy Limited | Health & social care | 2023 |
| Fuse Events Limited | Administrative & support | 2013 |
| Fusion Security Solutions Limited | Administrative & support | 2013 |
| Future Search Ltd | Professional & scientific | 2007 |
| Fuzzy Growlers Ltd | Real estate | 2014 |
| FV Project Partners Ltd | Administrative & support | 2024 |
| FX Billing EU Ltd | Other services | 2012 |
| FX M.E. Ltd | Extraterritorial | 2010 |
| Fyndsy Ltd | Wholesale & retail | 2026 |
| G & C Klatsia Limited | Real estate | 2020 |
| G & G Manufacturing Ltd | Professional & scientific | 2005 |
| G & L Evans Ltd | Other services | 2006 |
| G & M B Consulting Ltd | Professional & scientific | 2017 |
| G & T Investments Limited | Real estate | 2013 |
| G B T Educational Services Ltd | Education | 2023 |
| G Brewer Limited | Administrative & support | 2013 |
| G Gamble & SON Limited | Extraterritorial | 1947 |
| G K Gain Ltd | Construction | 2004 |
| G Munn and SON Professional Painting and Decorating Ltd | Construction | 2013 |
| G Services Limited | Other services | 2016 |
| G Spot Bistro Limited | Hospitality | 2007 |
| G Step Properties Ltd | Real estate | 2023 |
| G&B Associates Independent Financial Advisers LLP | | 2019 |
| G-Form Installations Limited | Construction | 2012 |
| G. Chell Builder Limited | Construction | 2008 |