| Finsa UK Limited | Wholesale & retail | 1990 |
| Finsahome Limited | Wholesale & retail | 2013 |
| Firdous Restaurant Ltd | Hospitality | 2024 |
| Fire Comply Installations Ltd | Construction | 2022 |
| Fire Door Co. Ltd | Professional & scientific | 2026 |
| Fires & Stoves Wirral Limited | Construction | 2026 |
| Fireside by Design Limited | Construction | 2020 |
| Firmpulse Ltd | Information & communication | 2026 |
| Firoo Limited | Hospitality | 2019 |
| First Bridge Finance Ltd | Administrative & support | 2013 |
| First for Energy Group Ltd | Professional & scientific | 2015 |
| Fisher Presentations Limited | Administrative & support | 2005 |
| Fit Food Shack Ltd | Hospitality | 2012 |
| Fitness King Limited | Wholesale & retail | 2020 |
| FIX Facilities Management Limited | Construction | 2022 |
| Flanagan Elite Construction Ltd | Construction | 2025 |
| Flavour Central Ltd | Manufacturing | 2012 |
| Flemtec Limited | Professional & scientific | 2026 |
| Fletcher Signs Ltd | Professional & scientific | 2026 |
| Flex-Trans Ltd | Transport & logistics | 2023 |
| Floating Grace Limited | Transport & logistics | 2017 |
| Flower Teapot Ltd | Wholesale & retail | 2022 |
| FLS Events Ltd | Arts & recreation | 2026 |
| Flue Check Ltd | Administrative & support | 2021 |
| Fluff Lpool Limited | Wholesale & retail | 2025 |
| Fluid Engineering Group Limited | Extraterritorial | 2015 |
| Fluid Engineering UK Limited | Manufacturing | 2015 |
| Flying Intelligence Limited | Professional & scientific | 2016 |
| Flyingcircle Ltd | Real estate | 2026 |
| FMR Capital Ltd | Administrative & support | 2023 |
| FO Health Group Ltd | Financial services | 2026 |
| Focal Solutions Consulting Ltd | Information & communication | 2025 |
| Focus Support Limited | Health & social care | 2004 |
| Foghornsperiperi Ltd | Hospitality | 2024 |
| Foodbyus Limited | Hospitality | 2024 |
| Football Supplies for ALL CIC | Arts & recreation | 2024 |
| Footcare in the Square Ltd | Health & social care | 2022 |
| Ford Heating Limited | Construction | 2007 |
| Fordow Convenience Store Ltd | Wholesale & retail | 2026 |
| Foredees Limited | Professional & scientific | 2011 |
| Former Forces Support | Health & social care | 2014 |
| Formington Ltd | Real estate | 2020 |
| Forshaw Water & GAS Limited | Construction | 2021 |
| Fortanza Ltd | Administrative & support | 2003 |
| Fortune Fabrication Ltd | Manufacturing | 2026 |
| Fortunex Trading Ltd | Wholesale & retail | 2025 |
| Foundation Construction and Consultancy Services Limited | Construction | 2023 |
| Founders Group Ltd | Administrative & support | 2025 |
| Four Winds Properties Ltd | Real estate | 2024 |
| Fourteen Cubed Limited | Information & communication | 1996 |
| FOX Outside Catering Limited | Hospitality | 2014 |
| Frank Dobson Partnership | | 1992 |
| Frankcare Community Services Ltd | Health & social care | 2022 |
| Franze UK Limited | Extraterritorial | 2021 |
| Fraser Blair Associates Limited | Construction | 2003 |
| Freedom ICT Ltd | Information & communication | 2015 |
| Freephone Taxis Ltd | Transport & logistics | 2009 |
| Freescape Music Project CIC | Education | 2023 |
| Frenzy Pizza and Kebab Ltd | Hospitality | 2024 |
| Fresco Fast Food Ltd | Hospitality | 2024 |
| Fresh Bite Cafe Ltd | Hospitality | 2025 |
| Fresh Shawarma Birkenhead Ltd | Hospitality | 2025 |
| Freya Jensen Beauty Ltd | Other services | 2021 |
| Friends of Birkenhead Council Kennels | Other services | 2011 |
| Frondeg Investment Company | Other services | 2021 |
| Frontline Medicals and Diagnostic Ltd | Health & social care | 2010 |
| Frontline Risk Management Ltd | Administrative & support | 2025 |
| Full Flow Solutions Ltd | Construction | 2017 |
| Fulsetvale Limited | Wholesale & retail | 1983 |
| FUN Train Day Nursery Ltd | Other services | 2005 |
| Furchilds Property Ltd | Real estate | 2024 |
| Fusion Joinery Ltd | Construction | 2010 |
| Future Homes LCR Ltd | Other services | 2024 |
| Future Yard CIC | Real estate | 2019 |
| Futures Hapin Ltd | Health & social care | 2024 |
| G K Autodesign Ltd | Construction | 2023 |
| G.A.Kirkham & Co.Limited | | 1963 |
| G4E Ltd | Construction | 2017 |
| Galileo Therapy UK Ltd | Other services | 2020 |
| Galluogi Potens Wales Limited | Health & social care | 2005 |
| Gambaru Global Limited | Wholesale & retail | 2022 |
| Garage Equipment Online Limited | Manufacturing | 2016 |
| Garden Court(Prenton)Maintenance Association,Limited | Households | 1965 |
| GAS Membrane Validation Services Limited | Construction | 2018 |
| Gavin Building Services Inc Ltd | Construction | 2011 |
| Gawith Properties Limited | Real estate | 2020 |
| GB Finance UK Ltd | Financial services | 2002 |
| GB Tours Ltd | Administrative & support | 2005 |
| GD Lighting Limited | Wholesale & retail | 2013 |
| GE Wholesale Ltd | Wholesale & retail | 2014 |
| Geldard Signature Estates Ltd | Real estate | 2024 |
| GEM Construct Limited | Construction | 2005 |
| Gemcliff Limited | Water & waste | 1977 |
| Gemini Build & Design Ltd | Construction | 2010 |
| GEO Handling Ltd | Transport & logistics | 2020 |
| Geo-Engines Limited | Professional & scientific | 2023 |
| George Jones Limited | Extraterritorial | 2019 |
| George Painter Ltd | Construction | 2019 |
| GF Construction (Wirral) Ltd | Construction | 2013 |
| Gfkb Wirral Ltd | Hospitality | 2026 |