| FAT Stu's Tackle Ltd | Wholesale & retail | 2025 |
| Fateh Dhillon Transport Limited | Transport & logistics | 2021 |
| Fateh Home Improvements Ltd | Construction | 2026 |
| Faversham Limited | Wholesale & retail | 1985 |
| Favours Dees Ltd | Transport & logistics | 2005 |
| FBA WM Ltd | Hospitality | 2026 |
| FC Accounts & Payroll Limited | Professional & scientific | 2022 |
| Fcoms UK CIC | Information & communication | 2023 |
| Febenox Ltd | Households | 2025 |
| Fellgrind Limited | Manufacturing | 1994 |
| Fence & Shed Factory Ltd | Manufacturing | 2023 |
| Fencing and Garden Products Ltd | Wholesale & retail | 2011 |
| Fenton Services (UK) Ltd | Construction | 2014 |
| Ferdotti Holdings Ltd | Financial services | 2019 |
| Ferdotti Ventures Limited | Other services | 2019 |
| FF Optical Limited | Health & social care | 2021 |
| FFF Creations Ltd | Health & social care | 2022 |
| Fgbt Limited | Hospitality | 2019 |
| Fichill Limited | Financial services | 2023 |
| Fieldmark Limited | Administrative & support | 2000 |
| Fillerworld Global Ltd | Health & social care | 2024 |
| Fillerworld Global Training Academy Ltd | Education | 2026 |
| Filmfuse Ltd | Professional & scientific | 2025 |
| Fire Core Solutions Limited | Wholesale & retail | 2007 |
| Fire Protection & Safety Solutions Ltd | Public administration | 2025 |
| Fire Services Central Ltd | Manufacturing | 2009 |
| Firkin & Green Bakeries (Wolverhampton) Limited | Manufacturing | 2026 |
| First Choice Fresh Food Ltd | Wholesale & retail | 2024 |
| First Class Eco Ltd | Administrative & support | 2023 |
| First Recruit Ltd | Administrative & support | 2025 |
| Fisher - Stevens Properties Ltd | Real estate | 2026 |
| Fishkroo Ltd | Information & communication | 2024 |
| Five O Healthcare Ltd. | Health & social care | 2016 |
| Fizzah Essentials Ltd | Wholesale & retail | 2025 |
| FJP Ductwork Services Ltd | Construction | 2019 |
| FL Creations Limited | Health & social care | 2025 |
| Flaming WOK (West Brom) Ltd | Hospitality | 2025 |
| Flash Freight Logistics Limited | Transport & logistics | 2019 |
| FLEETI24 Limited | Wholesale & retail | 2025 |
| Flexicon Limited | Manufacturing | 1999 |
| Flexy Trips Travel and Tourism Ltd | Administrative & support | 2024 |
| Floormaker Online Ltd | Wholesale & retail | 2019 |
| Flourish Properties Solutions Ltd | Real estate | 2025 |
| Flux Distribution Limited | Wholesale & retail | 2025 |
| FM Auto Locksmith Ltd | Other services | 2023 |
| FM Electrical Installations Service Ltd | Construction | 2025 |
| Fm&P Limited | Wholesale & retail | 2009 |
| Focus Accountancy Services Limited | Professional & scientific | 2025 |
| Follo Clothing Limited | Wholesale & retail | 2018 |
| Fone Tech UK - Ltd | Wholesale & retail | 2026 |
| Fone Vault Ltd | Wholesale & retail | 2023 |
| Fonecarepatiala Ltd | Wholesale & retail | 2025 |
| Food 360 Degrees Ltd | Wholesale & retail | 2023 |
| Fordley Limited | Construction | 2020 |
| Forever Family Care Homes Ltd | Health & social care | 2026 |
| Foreverhavenmassage Limited | Health & social care | 2026 |
| Forge Tech Services (UK) Ltd | Manufacturing | 2010 |
| Forgeai Studio Ltd | Manufacturing | 2026 |
| Forker Group Holdings Limited | Professional & scientific | 1999 |
| Forkers Limited | Construction | 1972 |
| Forkers Renewable Energy Ltd | Construction | 2006 |
| Formbend Holdings Limited | Financial services | 2020 |
| Formbend Limited | Manufacturing | 1966 |
| Forresters Builders Merchants Ltd. | Wholesale & retail | 2020 |
| Fort Construction Ltd | Construction | 2018 |
| Fortex Distribution Ltd | Wholesale & retail | 2025 |
| Forward Through Learning Trust | Education | 2017 |
| Fosseway Foods Limited | Manufacturing | 1994 |
| Foundry Gym Hull Ltd | Arts & recreation | 2024 |
| Four Seasons Landscaping & Fencing Ltd | Construction | 2023 |
| Francis Fotos UK Limited | Arts & recreation | 2023 |
| Franzvic Limited | Health & social care | 2012 |
| FRB Management Ltd | Wholesale & retail | 2020 |
| Freedom Asset Management Services Limited | Real estate | 2025 |
| FREIGHT2GO Europe Limited | Transport & logistics | 2016 |
| Freightnow Transport Ltd | Transport & logistics | 2024 |
| Fresh Coat Construction Ltd | Construction | 2025 |
| Fresh Media Records Ltd | Information & communication | 2022 |
| Fretfoil Limited | Manufacturing | 1973 |
| Friary Holdings Midlands Ltd | Real estate | 2022 |
| Frieght Partner Ltd | Transport & logistics | 2026 |
| FRM Official Ltd | Hospitality | 2026 |
| Frontline Transport Ltd | Transport & logistics | 2022 |
| Fruitme Ltd | Wholesale & retail | 2018 |
| Fuelline Express Ltd | Wholesale & retail | 2025 |
| Fulgerica Delivery Ltd | Transport & logistics | 2024 |
| Fullwood Installations 1 Ltd | Construction | 2016 |
| Future 11 Limited | Arts & recreation | 2024 |
| Future Ceilings and Walls Ltd | Construction | 2013 |
| Futuresfloors Ltd | Construction | 2025 |
| Futurewiseai Ltd | Information & communication | 2025 |
| G & G Express Services Limited | Transport & logistics | 2019 |
| G a V Supplies UK Ltd | Wholesale & retail | 2025 |
| G B Tyres (UK) Ltd | Wholesale & retail | 2011 |
| G Dhillon Limited | Professional & scientific | 2012 |
| G S Convenience Store Ltd | Wholesale & retail | 2024 |
| G S Fencing and Building Supply Ltd | Wholesale & retail | 2018 |
| G S Global Transport Ltd | Transport & logistics | 2025 |
| G S J Property Group Ltd | Real estate | 2018 |
| G S Liquor Store Ltd | Wholesale & retail | 2025 |