| Foodyz Limited | Hospitality | 2024 |
| Foodyz Online Limited | Hospitality | 2025 |
| Foord First Limited | Mining & quarrying | 2019 |
| Foord Group Limited | Financial services | 2025 |
| Foord Second Limited | Real estate | 2021 |
| Footeq Ltd | Manufacturing | 2025 |
| Footfall Advertising Ltd | Professional & scientific | 2008 |
| Footsteps Children's Day Nurseries Limited | Education | 2008 |
| FOR Media Group Limited | Education | 2020 |
| Forbes Legal Limited | Professional & scientific | 2018 |
| Forch Security Ltd | Administrative & support | 2026 |
| Ford & Stanley Holdings Limited | Administrative & support | 2018 |
| Ford & Stanley Limited | Administrative & support | 2010 |
| Ford Farm Mobile Home Park Limited | Real estate | 2023 |
| Ford Freight Services Ltd | Transport & logistics | 2026 |
| Fords International Limited | Transport & logistics | 1997 |
| Fords of Derby Ltd | Other services | 2023 |
| FORE18 Limited | Wholesale & retail | 2023 |
| Forecastle Limited | Hospitality | 2025 |
| Forecourt Installations & Engineering Limited | Wholesale & retail | 1996 |
| Forefront Strength & Conditioning Ltd | Other services | 2019 |
| Foregate Limited | Real estate | 1991 |
| Foremark International Limited | Transport & logistics | 2007 |
| Foremark Ltd | Information & communication | 2018 |
| Foremarks Facilities Management Ltd | Administrative & support | 2025 |
| Foremost Specialist Products Ltd. | Professional & scientific | 2004 |
| Forensic Design Group Ltd | Wholesale & retail | 2025 |
| Foresight Innovations Holdings Limited | Financial services | 2021 |
| Foresight Innovations Ltd | Professional & scientific | 2016 |
| Foresight Property Partners Ltd | Education | 2023 |
| Forest Hill Montessori Limited | Education | 2018 |
| Foresters Financial Consultancy Limited | Professional & scientific | 2023 |
| Forestspring Ltd | Agriculture & fishing | 2026 |
| Forever Property 7 Ltd | Real estate | 2026 |
| Forge Advisory Ltd | Professional & scientific | 2025 |
| Forgecasa Ltd | Real estate | 2026 |
| Forged From Within Ltd | Wholesale & retail | 2026 |
| Forhart Ltd | Construction | 2018 |
| Form Building Services Ltd | Construction | 2025 |
| Forma Connect Marketing Ltd | Professional & scientific | 2025 |
| Format Print Limited | Manufacturing | 2003 |
| Format Products for Computers Limited | | 1984 |
| Forme Works Ltd | Manufacturing | 2026 |
| Formelite Dental Laboratory Ltd | Health & social care | 2008 |
| Forming Connections Ltd | Professional & scientific | 2025 |
| Forster Construction Services Ltd | Construction | 2020 |
| Fortbridge Ltd | Information & communication | 2020 |
| Fortescue's Consulting Ltd | Professional & scientific | 2021 |
| FORTHELIONS08 Ltd | Hospitality | 2024 |
| Fortis Fabrications Limited | Manufacturing | 2025 |
| Fortitude Consultancy Limited | Financial services | 2023 |
| Fortitude Global IT Support Ltd. | Other services | 2016 |
| Fortitude Nicsa Global Limited | Information & communication | 2018 |
| Fortress Freelance Services Ltd | Information & communication | 2023 |
| Fortress Maintenance Ltd | Administrative & support | 2023 |
| Fortunatus Properties Limited | Real estate | 2020 |
| Fortunum Ltd | Professional & scientific | 2014 |
| Forty Seven Services Limited | Professional & scientific | 2022 |
| Forum Speciality Coffee Limited | Hospitality | 2023 |
| Forward Fusion Ltd | Households | 2023 |
| Forward Travel Solutions Ltd | Administrative & support | 2012 |
| Fosterfridge Limited | Professional & scientific | 2003 |
| Foston Park Limited | Real estate | 1999 |
| Foston Rentals Limited | Real estate | 2026 |
| Fotros Cars Ltd | Wholesale & retail | 2024 |
| Fotros Co Ltd | Mining & quarrying | 2024 |
| Foulds Guitars Limited | Wholesale & retail | 2018 |
| Fountain Commercial Limited | Real estate | 2011 |
| Four Homes Property Group Ltd | Real estate | 2019 |
| Four Leaf Holdings Ltd | Financial services | 2024 |
| Four Oaks Care Ltd | Health & social care | 2025 |
| Four Oaks Ventures Group Ltd | Financial services | 2026 |
| Four Seasons Gardening Limited | Administrative & support | 2024 |
| Four Seasons Golf Centre Limited | Arts & recreation | 2007 |
| Four Technologies Ltd | Information & communication | 2018 |
| Four Thirty Two Consulting Limited | Professional & scientific | 2023 |
| Four Walls Derby Limited | Construction | 2016 |
| Four Winds Textile Company Limited | Wholesale & retail | 2000 |
| FOUR3EC Ltd | Construction | 2025 |
| Fourfourtwo OB Limited | Transport & logistics | 2017 |
| Fournos Ltd | Hospitality | 2025 |
| Fours and Paws Limited | Hospitality | 2025 |
| Fourseasons Family Consulting Ltd | Financial services | 2026 |
| Fourstage Environmental Limited | Professional & scientific | 2004 |
| FOX & Feathers Electrical Limited | Construction | 2023 |
| FOX & Rabbit Recruitment Limited | Administrative & support | 2025 |
| FOX Associate LLP | | 2004 |
| FOX Associates Statutory Services Limited | Administrative & support | 2025 |
| FOX Hound Engineering Ltd | Professional & scientific | 2026 |
| FOX ITC Ltd | Information & communication | 2017 |
| FOX Precision Tooling Ltd | Manufacturing | 2023 |
| FOX Properties (East Midlands) Limited | Real estate | 2019 |
| FOX Red Beers Ltd | Hospitality | 2025 |
| FOX Trading and Events Ltd | Arts & recreation | 2023 |
| FOX Transport Ltd | Manufacturing | 2024 |
| FOX Vintage Wholesale Ltd | Wholesale & retail | 2019 |
| Foxhound Coaches Ltd | Transport & logistics | 2020 |
| Foxhunt Ltd | Administrative & support | 2011 |
| Foxstone Earthworks Limited | Other services | 2020 |
| Foxstone Quarries Limited | Other services | 2026 |