| Fieg Access Systems Limited | Manufacturing | 2008 |
| Field Trips Executive Travel Ltd | Transport & logistics | 2018 |
| Fieldfare Candle Company Ltd | Manufacturing | 2020 |
| Fifields Court Ltd | Construction | 2017 |
| FIG Value Partners Limited | Professional & scientific | 2018 |
| Fikutis Ltd | Other services | 2020 |
| Filtermist Holdings Limited | Manufacturing | 1997 |
| Filtermist International Limited | Manufacturing | 2006 |
| Filtermist Limited | Manufacturing | 2001 |
| Finalchest Ltd | Administrative & support | 2020 |
| Financial Outreach Limited | Professional & scientific | 1999 |
| Finca Developments Ltd | Real estate | 2026 |
| Finger RD Car Valeting Ltd | Administrative & support | 2025 |
| Finlamb Investments Limited | Real estate | 2026 |
| Fiona Cork Saddles Ltd | Manufacturing | 2020 |
| Fiona Cork Showing Limited | Manufacturing | 2014 |
| Fiona Kilburn Financial Advisor Limited | Financial services | 2012 |
| Fire & Rescue Training Ltd | Extraterritorial | 2003 |
| Fire Scene Group Ltd | Professional & scientific | 2025 |
| Fireline UK Ltd | Wholesale & retail | 1997 |
| Fireplacenet Limited | Manufacturing | 2006 |
| Firet Ltd | Hospitality | 2023 |
| Firethorns Consultancy Limited | Information & communication | 2010 |
| Firewalking UK Ltd | Other services | 2024 |
| First Call Cleaning Ltd | Administrative & support | 2018 |
| First Car UK Ltd | Wholesale & retail | 2004 |
| First Choice Kitchens & Bathrooms Limited | Construction | 2019 |
| First Choice Paving and Construction Ltd | Construction | 2025 |
| First Choice Paving Limited | Construction | 2017 |
| First Delta IT Limited | Information & communication | 2003 |
| FIRST4CONTACT Ltd | Administrative & support | 2018 |
| Firstclad Ltd | Construction | 2018 |
| Fish Fare Ltd | Manufacturing | 2021 |
| Fishy Fish Fish Ltd | Real estate | 2019 |
| Fit for Purpose Limited | Real estate | 2011 |
| FIT4TRAINING Ltd | Other services | 2010 |
| Fitbody Limited | Other services | 2018 |
| Fitness Factory (Telford) Limited | Arts & recreation | 2011 |
| Fitness Factory WEM Limited | Arts & recreation | 2024 |
| Five River Systems Limited | Information & communication | 2006 |
| Fivejack Limited | Real estate | 2019 |
| Fivemanor Limited | | 1980 |
| Fix-Ur-Dent Limited | Health & social care | 2009 |
| FIX1ST Ltd | Other services | 2020 |
| Fixed Wire Telford Ltd | Construction | 2022 |
| FJB Properties Limited | Real estate | 1994 |
| Flagship Industries Ltd | Other services | 2026 |
| Flaminesse Ltd | Other services | 2019 |
| Flaming Efficient Limited | Construction | 2013 |
| Flane Property Limited | Real estate | 2024 |
| Flares Hairdressing | Other services | 2002 |
| Flatpack Furniture Ltd | Wholesale & retail | 2010 |
| Flatpack Shropshire Ltd | Extraterritorial | 2015 |
| Flavoor Ltd | Information & communication | 2020 |
| Flawless Body Repairs Ltd | Wholesale & retail | 2023 |
| Fleet Key Solutions Limited | Wholesale & retail | 2024 |
| Fleet Master Ltd | Wholesale & retail | 2023 |
| Flexgold Investments Limited | Other services | 2012 |
| Flintshire Sand and Gravel Limited | Mining & quarrying | 2018 |
| Flipping Friends Ltd | Information & communication | 2026 |
| Flirt Series Ltd | Arts & recreation | 2019 |
| Float Control Limited | Professional & scientific | 2015 |
| Floreat Energies Limited | Manufacturing | 2010 |
| Floresti Ltd | Other services | 2020 |
| Florin Fota Ltd | Transport & logistics | 2016 |
| Florra Ltd | Transport & logistics | 2024 |
| Fluid Power Supplies Limited | Wholesale & retail | 2016 |
| Flute I/O Ltd | Information & communication | 2016 |
| Flycast Ltd | Wholesale & retail | 2017 |
| Flyright Ltd | Health & social care | 2017 |
| FM (Ironbridge) Management Company Limited | Households | 2016 |
| FM Exterior Specialists Limited | Administrative & support | 2025 |
| FMC Traders Ltd | Wholesale & retail | 2023 |
| Focus AI Ltd | Information & communication | 2025 |
| Foden & Turner Ltd | Manufacturing | 2024 |
| Foden Property (Lawley) Limited | Real estate | 2013 |
| Fodens LLP | | 2017 |
| Fodens Solicitors Limited | Professional & scientific | 2010 |
| Foil Holdings Limited | Financial services | 2023 |
| Folding Tables UK Ltd | Administrative & support | 2003 |
| Fomo Erraji Ltd | Wholesale & retail | 2025 |
| Foneli Ltd | Other services | 2020 |
| Food & Fuel Ltd | Hospitality | 2025 |
| Food and Wine Donnington Ltd | Hospitality | 2023 |
| Food HUT (Hot N Cold) Ltd | Hospitality | 2023 |
| Food O'Clock Ltd | Hospitality | 2020 |
| Food Relationships Ltd | Professional & scientific | 2015 |
| Food Waste Heroes Limited | Hospitality | 2016 |
| FOOD2SHARE Ltd | Real estate | 2016 |
| Foodiesl Ltd | Hospitality | 2025 |
| Football FUN Factory (Community 116) Limited | Arts & recreation | 2024 |
| Football Mastery Ltd | Wholesale & retail | 2025 |
| Foottherapy Wolverhampton Ltd | Health & social care | 2025 |
| Ford Financials Limited | Financial services | 2024 |
| Fordham Barnes Consultancy Ltd | Education | 2025 |
| Fordify Limited | Information & communication | 2025 |
| Forest Oak Products Limited | Wholesale & retail | 2015 |
| Forester and Arborist Services Limited | Agriculture & fishing | 2009 |
| Foreva Concrete Repairs Limited | Construction | 1988 |
| Forever Afloat Ltd | Hospitality | 2025 |