| Favrin Property Investments Ltd | Real estate | 2026 |
| FAZ International Ltd | Wholesale & retail | 2024 |
| Fazzland Plus Ltd | Wholesale & retail | 2023 |
| FB Investments Ltd | Real estate | 2025 |
| FBA Prep (Centre) Limited | Administrative & support | 2024 |
| FBH Trading Ltd | Wholesale & retail | 2024 |
| FC Hanley Ltd | Arts & recreation | 2015 |
| FC Meir Ltd | Hospitality | 2025 |
| FC Realisations 2020 Limited | Transport & logistics | 2014 |
| FC Young Romanian Eagles Limited | Education | 2025 |
| FCP Transport Limited | Transport & logistics | 2022 |
| FD Consult Limited | Professional & scientific | 2017 |
| FD Impact Limited | Information & communication | 2019 |
| FD Intense Cleaning Service Ltd | Administrative & support | 2026 |
| FE Chromium (UK) Limited | Mining & quarrying | 2011 |
| Feast With Friends Limited | Hospitality | 2019 |
| Feasted CIC | Education | 2019 |
| Fecrhome Ltd | Wholesale & retail | 2025 |
| Federation of British Chimney Sweeps Limited | Other services | 2020 |
| Feel the Part CIC | Education | 2021 |
| Feeney Estate Agents Ltd | Real estate | 2020 |
| Feeney Property Ltd | Real estate | 2022 |
| Fehmco Ltd | Wholesale & retail | 2020 |
| FEL Etrix Ltd | Construction | 2024 |
| Felicia Healthcare Ltd | Health & social care | 2014 |
| Felico UK Ltd | Hospitality | 2018 |
| Fenner Group Holdings Limited | Professional & scientific | 1937 |
| Fenner International Limited | Professional & scientific | 1953 |
| Fenner Pension Scheme Trustee Limited | Financial services | 2008 |
| Fenpark Glass Ltd | Manufacturing | 2026 |
| Fenrir Ventures Ltd | Hospitality | 2019 |
| Fenton BED Warehouse Ltd | Wholesale & retail | 2024 |
| Fenton Domestic Appliances Limited | Wholesale & retail | 2011 |
| Fenton Fields Events Ltd | Hospitality | 2022 |
| Fenton Glass & Glazing Limited | Manufacturing | 1982 |
| Fenton Park Developments Limited | Construction | 2017 |
| Fenton Portable Buildings Ltd. | Manufacturing | 1993 |
| Fenton Security Supplies Limited | Wholesale & retail | 2010 |
| Fenton Trailers Limited | Transport & logistics | 2001 |
| Fenton Vape Ltd | Wholesale & retail | 2026 |
| Fentonmotors Ltd | Real estate | 2024 |
| Fernlaw Properties Ltd | Real estate | 2013 |
| Fernlea Retreats Limited | Real estate | 2025 |
| Fernleigh Dental Practice Limited | Health & social care | 2013 |
| Ferranti Industrial Doors Ltd | Construction | 2025 |
| Ferris Murphy Consulting Ltd | Professional & scientific | 2014 |
| Fervid Healthcare Limited | Health & social care | 2017 |
| Fervid Properties Ltd | Real estate | 2025 |
| Fervor Group Ltd | Health & social care | 2024 |
| Festival Park Aesthetics Ltd | Other services | 2023 |
| Fg-Comps Ltd | Arts & recreation | 2026 |
| FGF Properties Ltd | Real estate | 2024 |
| FGH Instrument Services Limited | Professional & scientific | 1988 |
| FH Plant Services Limited | Administrative & support | 2014 |
| FHS Accounting Limited | Professional & scientific | 2018 |
| Fibidun Industrial Ltd | Wholesale & retail | 2022 |
| Fibrx Worldwide Ltd | Professional & scientific | 2023 |
| Fido Trans Ltd | Wholesale & retail | 2011 |
| Field Ascend Ltd | Information & communication | 2025 |
| Field House Day Care Nursery Limited | Education | 2005 |
| Field House Farm Ltd | Agriculture & fishing | 2022 |
| Fieldpeople Ltd | Administrative & support | 2017 |
| Fieldways Associates Limited | Real estate | 2012 |
| Fiesta Bars Ltd | Hospitality | 2024 |
| Fifteen Communications Limited | Information & communication | 2014 |
| Fifteen Group Limited | Information & communication | 2006 |
| Fifteen Holdings Limited | Professional & scientific | 2007 |
| Fifthgear Fenton Ltd | Wholesale & retail | 2021 |
| Fifty Five Degrees Limited | Hospitality | 2018 |
| Fifty-Two Specialist Cars Ltd | Wholesale & retail | 2022 |
| Fikkymoore International Limited | Wholesale & retail | 2025 |
| Fill the GAP Services Ltd | Professional & scientific | 2025 |
| Filon Fabian Limited | Transport & logistics | 2018 |
| Filtercare Limited | Water & waste | 2009 |
| Filthy Rich Derby Ltd | Wholesale & retail | 2015 |
| Filthy Rich Jewellery Ltd | Wholesale & retail | 2013 |
| Finance for Property Developers Limited | Financial services | 2014 |
| Financial Solutions (E) Ltd. | Financial services | 1991 |
| Financialhelpers Limited | Professional & scientific | 2000 |
| Finch Care and Housing Ltd | Extraterritorial | 2022 |
| Finch Freight Ltd | Transport & logistics | 2006 |
| Find a JOB Ltd | Information & communication | 2026 |
| Find IT. Score IT. Ltd | Information & communication | 2017 |
| Findler Commercial Holdings Ltd | Other services | 2022 |
| Findra Ltd | Wholesale & retail | 2026 |
| Fine Shine Craft Ltd | Manufacturing | 2026 |
| Finicky Cleaners Limited | Administrative & support | 2025 |
| Finishing Touches Staffordshire Limited | Other services | 2025 |
| Fins N Fry's Limited | Hospitality | 2024 |
| Fintax Outsourcing Ltd | Professional & scientific | 2024 |
| Finue Studio Ltd | Professional & scientific | 2023 |
| Finuvo Group Ltd | Financial services | 2025 |
| Firas Legal Ltd | Professional & scientific | 2026 |
| Fire Containers Limited | Public administration | 2022 |
| Firgun Ltd | Information & communication | 2022 |
| Firma Nicand Plastic Products Limited | Manufacturing | 1965 |
| First 4 Children Ltd | Health & social care | 2021 |
| First 4 Cleaning Services Ltd | Administrative & support | 2024 |
| First Call Plumbing and Heating Ltd | Energy | 2024 |
| First Call Waste Water Ltd | Construction | 2025 |