| Foundry Drive & Co Ltd | Wholesale & retail | 2023 |
| Four Care Plus Limited | Health & social care | 2006 |
| Four Paws Walking and Training Ltd | Other services | 2023 |
| Four Sixes Ltd | Other services | 2025 |
| Four Spires Group Ltd | Real estate | 2020 |
| Four Spires Holdings Ltd | Financial services | 2026 |
| FOX & Edwards Events Ltd | Other services | 2019 |
| Foxbridge Properties Ltd | Real estate | 2009 |
| Foxbrook Farm Limited | Agriculture & fishing | 2019 |
| Foxbrook Mortgage and Finance Ltd | Financial services | 2022 |
| Foxwood Boring and Grinding Limited | Manufacturing | 1988 |
| Foxwood Furniture Co. Limited | Manufacturing | 2018 |
| Frakcha Media Ltd | Information & communication | 2020 |
| Frame Trade UK Ltd | Manufacturing | 2003 |
| Framing & Gifts Limited | Wholesale & retail | 2017 |
| Francesca's Recruitment Ltd | Administrative & support | 2022 |
| Francis Ervine Ltd | Administrative & support | 2025 |
| Frank Berry (Office Supplies) Limited | Wholesale & retail | 1984 |
| Frank Shaw Limited | Professional & scientific | 1991 |
| Frankis Heating & Cooling Solutions Ltd | Manufacturing | 2024 |
| Franklin 1886 Limited | Wholesale & retail | 2017 |
| Freddys Chesterfield Ltd | Wholesale & retail | 2025 |
| Freds CS Limited | Wholesale & retail | 2025 |
| Free Spirit (2000) Limited | Real estate | 2000 |
| Freebird Safety Systems Ltd | Professional & scientific | 2015 |
| Freedom Centre Ltd | Health & social care | 2010 |
| Freedom Community Project | Health & social care | 2011 |
| Freedom Doors and Windows Ltd | Manufacturing | 2023 |
| Freeman Daynes Ltd | Other services | 2019 |
| Freeman Daynes Property Management Ltd | Real estate | 2021 |
| Freestyle Software Ltd | Information & communication | 2023 |
| Freight Service Solutions Limited | Administrative & support | 2013 |
| Fresh Ideas Florists Ltd | Wholesale & retail | 2012 |
| Froggatts Haulage Limited | Transport & logistics | 2012 |
| Froggett Property Limited | Real estate | 2021 |
| Frontline Lettings Limited | Construction | 2018 |
| Frontline Sales & Marketing Limited | Professional & scientific | 1999 |
| Frootfare Ltd. | Information & communication | 2013 |
| Frost Holdings Limited | Wholesale & retail | 2015 |
| Frostlocketuk Limited | Hospitality | 2026 |
| FTV Proclad International Limited | Manufacturing | 1975 |
| Full Potential Consulting Ltd | Professional & scientific | 2023 |
| Full Speed Events Limited | Extraterritorial | 2014 |
| Full Stop Accounting and Tax Limited | Professional & scientific | 2020 |
| Fuller Space Limited | Real estate | 2015 |
| Fullmoonprod Ltd | Information & communication | 2023 |
| Fully Integrated Safety & Control Systems Ltd | Professional & scientific | 2022 |
| Fulminata Ltd | Real estate | 2026 |
| Funbox Media Limited | Information & communication | 2010 |
| Funtip Limited | Administrative & support | 2021 |
| Furley Development Co. Limited | Real estate | 1986 |
| Furnace Hill Management Services | Professional & scientific | 2006 |
| Furnival Steel Company Limited | Manufacturing | 2008 |
| Furryfluffyfriends Ltd | Agriculture & fishing | 2021 |
| Furst Class Lounge Limited | Other services | 2014 |
| Fusion Group Industries Limited | Construction | 2026 |
| Fusion Group Limited | Professional & scientific | 1998 |
| Fusion Group Manufacturing Limited | Extraterritorial | 2012 |
| Fusion Investco Limited | Professional & scientific | 2013 |
| Fusion Plastics Limited | Manufacturing | 1998 |
| Fusion Sport and Play Limited | Construction | 2022 |
| Fusion Vape Limited | Wholesale & retail | 2016 |
| Fusionbyte System Limited | Information & communication | 2025 |
| Fusionpac Ltd | Manufacturing | 2026 |
| Futnet UK Community Leagues CIC | Arts & recreation | 2025 |
| Futnet UK Ltd | Arts & recreation | 2025 |
| Future Essentials Ltd | Wholesale & retail | 2025 |
| Future Flow Plumbing Heating and Renewables Limited | Construction | 2025 |
| Future Inspection Services Limited | Professional & scientific | 2021 |
| Future Phonics Ltd | Wholesale & retail | 2015 |
| FWX Direct Ltd | Manufacturing | 2024 |
| G & G Collectables Limited | Wholesale & retail | 2005 |
| G & H Blood Limited | Wholesale & retail | 2005 |
| G & J Autodeals Ltd | Wholesale & retail | 2025 |
| G & K Developments Limited | Construction | 2002 |
| G a M Investments Limited | Real estate | 2025 |
| G and G Transport Chesterfield Limited | Transport & logistics | 2015 |
| G and W Leisure Limited | Wholesale & retail | 2012 |
| G B Conveyor Services Ltd | Mining & quarrying | 2015 |
| G Bradbury Windows Limited | Construction | 2015 |
| G D Hire Limited | Construction | 2002 |
| G Evans Property Services Limited | Construction | 2023 |
| G Finnie Electrical Services Ltd | Construction | 2011 |
| G Glazing Ltd | Construction | 2026 |
| G K J C Consultancy Limited | Professional & scientific | 2022 |
| G L D Construction Limited | Construction | 2002 |
| G R Groundworks & Building Services Ltd | Construction | 2021 |
| G S B Homes Ltd | Construction | 2016 |
| G&T Photography Ltd | Professional & scientific | 2021 |
| G. & J. Holmes (Coaches) Limited | Transport & logistics | 1983 |
| G. Bowler Plant Limited | Administrative & support | 2003 |
| G.A.S Bars Limited | Hospitality | 2018 |
| G.B.S Services Ltd | Real estate | 2026 |
| G.C. Golf Services Ltd | Arts & recreation | 2024 |
| G.F.E. Electrical Wholesale Limited | Extraterritorial | 1963 |
| G.K.L. Factsell Limited | Other services | 2001 |
| G.P.S Supplies Limited | Wholesale & retail | 2025 |
| G.P.Surfacing Limited | Construction | 2021 |
| G.S.M. Electrical Supplies Ltd | Wholesale & retail | 2013 |
| G16 Healthcare Ltd | Health & social care | 2016 |