| Flissy's Coffee Shop Limited | Hospitality | 2019 |
| Flora Buxton and Bear Limited | Information & communication | 2025 |
| Flosion Limited | Manufacturing | 2021 |
| Flourish Heswall Ltd | Education | 2024 |
| Flourishwirral Ltd | Health & social care | 2019 |
| Flow Media Management & Research Ltd | Information & communication | 2026 |
| Flow PLW CIC | Education | 2025 |
| Flow Wellness Ltd | Arts & recreation | 2025 |
| Flowbx Ltd | Other services | 2020 |
| Flowzone Property Ltd | Real estate | 2018 |
| FLS Analytics Ltd | Information & communication | 2022 |
| Fluffy Lash Ltd | Other services | 2018 |
| Fluid Inclusion Consulting Limited | Professional & scientific | 2016 |
| FLY High Engineering Limited | Professional & scientific | 2020 |
| FLYAWAY4LESS Limited | Administrative & support | 2009 |
| Flyin Fish Distribution Limited | Wholesale & retail | 2025 |
| Flying Changes Equine Ltd | Arts & recreation | 2018 |
| Flyingfish Aviation Ltd | Manufacturing | 2022 |
| Flynnmusic Ltd | Education | 2020 |
| FM Training (North West) Limited | Construction | 2010 |
| FMI Applications Limited | Professional & scientific | 2019 |
| FMS Properties Limited | Real estate | 2024 |
| FMS Stays Ltd | Real estate | 2021 |
| FNM Holdings Ltd | Real estate | 2021 |
| Focus Holdings Ltd | Financial services | 2025 |
| Focus on Digital Design Limited | Professional & scientific | 2014 |
| Foggo Locum Limited | Wholesale & retail | 2020 |
| Fohcus Limited | Health & social care | 2013 |
| Foicare Limited | Wholesale & retail | 2018 |
| Folocumservices Limited | Professional & scientific | 2020 |
| Fone.Care (Wirral) Ltd | Wholesale & retail | 2017 |
| Foodtech Partnership Ltd | Administrative & support | 2011 |
| Football for Life CIC | Arts & recreation | 2025 |
| Footprint Fit OUT Limited | Construction | 2017 |
| Footworks Podiatry Clinic Limited | Health & social care | 2016 |
| FOR Life Productions Ltd | Arts & recreation | 2023 |
| FOR the WIN Ltd | Financial services | 2021 |
| Forager's Fancy U.K. Limited | Manufacturing | 2020 |
| Fordies Mini Coaches Limited | Transport & logistics | 2014 |
| Fordo Property Ltd | Real estate | 2025 |
| Forest Lubricants Limited | Manufacturing | 2024 |
| Forest Road Estates Ltd | Real estate | 2020 |
| Forgegrowthagency.Com Ltd | Professional & scientific | 2026 |
| Forging the Futures CIC | Education | 2026 |
| Forma Beauty Ltd | Other services | 2025 |
| Formosa Holding Business Group Ltd | Real estate | 2019 |
| Formosa UK Property Management Ltd | Real estate | 2023 |
| Forrd Consulting Limited | Professional & scientific | 2024 |
| Forrest Mortgage Solutions Ltd | Financial services | 2024 |
| Forster Dean (PI) Limited | Professional & scientific | 2025 |
| Forster Dean Holding Limited | Financial services | 2025 |
| Fort Perch Rock Ltd | Arts & recreation | 2022 |
| Forte Business Services Limited | Professional & scientific | 2007 |
| Forte Education Ltd | Education | 2023 |
| Fortex Properties Limited | Households | 2026 |
| Fortress Medicare Limited | Health & social care | 2017 |
| Fortress Property Venture Limited | Real estate | 2022 |
| Fortress Security & Protection Services Ltd | Administrative & support | 2024 |
| Forward Quality Ltd | Administrative & support | 2011 |
| Foster 5344 UK Limited | Administrative & support | 2012 |
| Foster Connors Ltd | Health & social care | 2024 |
| Foundry Creative Studio Ltd | Administrative & support | 2022 |
| Four Corners Worldwide Ltd | Professional & scientific | 2005 |
| Four Fingers Limited | Professional & scientific | 2017 |
| Four Sons Group Ltd | Real estate | 2026 |
| Fourth Wall FEP3 Limited | Wholesale & retail | 2021 |
| Fourth Wall FEP4 Limited | Wholesale & retail | 2021 |
| Fourth Wall IP Limited | Administrative & support | 2019 |
| Fourth Wall Limited | Administrative & support | 2009 |
| Fourth Wall Memorabilia Limited | Wholesale & retail | 2020 |
| Fourth Wall Publishing Limited | Information & communication | 2010 |
| FOX and Vamp Academy Ltd | Other services | 2024 |
| FOX and Vamp Limited | Other services | 2019 |
| FOX Industry Solutions Ltd | Wholesale & retail | 2023 |
| Foxwood Ventures Limited | Real estate | 2025 |
| Fozard Properties Limited | Real estate | 2014 |
| FPC Financial Services Limited | Financial services | 1987 |
| FPD Fire Protection Developments Ltd | Professional & scientific | 2023 |
| Frame Rack Limited | Wholesale & retail | 2025 |
| Frame Rack Optical Limited | Wholesale & retail | 2025 |
| Framing Genius Limited | Wholesale & retail | 2025 |
| Francesca Court Management Limited | Real estate | 2001 |
| Francis RAE Ltd | Wholesale & retail | 2023 |
| Frank Nelson Limited | Manufacturing | 2003 |
| Frankby 1960 Limited | Extraterritorial | 2014 |
| Franklin & Gray Ltd | Construction | 2003 |
| Franksu Ltd | Health & social care | 2018 |
| Freckleton Roberts Ltd | Real estate | 2026 |
| Fred and Ginger Productions Limited | Professional & scientific | 2001 |
| Free Range DEN Ltd | Health & social care | 2025 |
| Freedom in Motion C.I.C. | Health & social care | 2025 |
| Freelance Contractors Ltd | Information & communication | 2009 |
| Freer Developments Ltd | Construction | 2026 |
| Freightcarrier Logistics Ltd | Transport & logistics | 2016 |
| Freshlines IT Limited | Information & communication | 2013 |
| Freya Anderson Limited | Arts & recreation | 2018 |
| Froggerdog Festival Limited | Arts & recreation | 2025 |
| Front ROW Homes Limited | Real estate | 2019 |
| Front ROW Property Limited | Real estate | 2026 |
| Frontline Properties (NW) Limited | Real estate | 2003 |