| Foster Pierce Group Limited | Construction | 2013 |
| Fountain Creative Limited | Professional & scientific | 2020 |
| Fountain Hall Management Company Limited | Households | 1989 |
| Four Crosses (Holdings) Limited | Financial services | 2026 |
| Four Crosses Filling Station Limited | Wholesale & retail | 2004 |
| Four Oaks Contracting Limited | Construction | 2021 |
| Four Point Distribution Ltd | Transport & logistics | 2022 |
| Four Seasons Leisure Limited | Administrative & support | 2023 |
| Four Walls Dimensions Limited | Real estate | 2007 |
| Four Walls Limited | Real estate | 2005 |
| Fourteen Forty-Six Limited | Arts & recreation | 2019 |
| Fourth Parkquays Management Company Limited | Households | 1987 |
| FOX & Co Bespoke Ltd | Manufacturing | 2018 |
| FOX & Hare Cottages Limited | Hospitality | 2019 |
| FOX and Greene Limited | Wholesale & retail | 2020 |
| FOX Automation Ltd | Professional & scientific | 2021 |
| FOX Meadows (Thorpe Astley) NO.1 Management Limited | Households | 2007 |
| FOX Procurement & Products Shipment Ltd | Transport & logistics | 2000 |
| Foxby Chase (Phase Three) Management Company Limited | Households | 2012 |
| Foxby Chase Management Limited | Households | 2003 |
| Foxglove Court (Penylan) Residents Management Company Limited | Households | 2021 |
| Foxholes Energy Ltd | Energy | 2019 |
| Foxholes Farm Limited | Agriculture & fishing | 2010 |
| Foxholes Holdings Limited | Financial services | 2025 |
| Frampton Grugeon Limited | Manufacturing | 2010 |
| Frampton Grugeon Properties Ltd | Other services | 2023 |
| Fran Raybould Associates Limited | Professional & scientific | 2014 |
| Frances Court Management (Herne Bay) Limited | Households | 1989 |
| Franchi Clinic Ltd | Other services | 2024 |
| Francis Nock Fcca Ltd | Professional & scientific | 2013 |
| Frank Painter & Sons Holdings Ltd | Other services | 2026 |
| Frank Painter & Sons Limited | Other services | 2015 |
| Franklin Agri Limited | Professional & scientific | 2015 |
| Frankwell Catering Limited | Hospitality | 2010 |
| Frankwell Developments Limited | Construction | 2010 |
| Frankwell Financial Limited | Professional & scientific | 2001 |
| Frankwell Food Co Limited | Hospitality | 2025 |
| Frankwell Housing Management Limited | Real estate | 2019 |
| Frankwell Investments Limited | Real estate | 2010 |
| Frankwell Mandarin Limited | Hospitality | 2023 |
| Frankwell Properties Limited | Real estate | 1943 |
| Fred Perks Limited | Construction | 2012 |
| Freedom Bookkeeping Ltd | Professional & scientific | 2023 |
| Freeflow Drainage Ltd | Water & waste | 2018 |
| Freeplay Energy Limited | Wholesale & retail | 2010 |
| Freesia Ltd | Hospitality | 2013 |
| Freestyle Live Ltd | Other services | 2011 |
| French Cars (Shrewsbury) Limited | Wholesale & retail | 2000 |
| Fresh Clarity Limited | Professional & scientific | 2015 |
| Fresh Start Furnishings CIC | Wholesale & retail | 2026 |
| Fresh Supermarket Ltd | Wholesale & retail | 2021 |
| Freshwinds Financial Ltd | Professional & scientific | 2017 |
| Freshwinds Property Ltd | Real estate | 2018 |
| Freya Capital Limited | Information & communication | 2016 |
| Freya Propco Limited | Real estate | 2021 |
| Freyacap 3 Limited | Professional & scientific | 2021 |
| Friday Bridge Management Company Limited | Households | 1999 |
| Fridgeit Trailer Hire Limited | Administrative & support | 2025 |
| Friends of Lord Hill's Column Limited | Administrative & support | 2014 |
| Frog Properties Ltd | Real estate | 2019 |
| From Within Limited | Other services | 1995 |
| Frontify Consulting Limited | Information & communication | 2024 |
| FRY, Nightingale & Fleming Limited | Professional & scientific | 2021 |
| FSC Consultancy Services Limited | Professional & scientific | 1992 |
| FSC Trading Ltd | Education | 2020 |
| FT Retail Consultancy Ltd | Wholesale & retail | 2023 |
| Fuel Additive Science Technologies Limited | Manufacturing | 2005 |
| Fuelcare Limited | Professional & scientific | 1989 |
| Fugazzi Trading Limited | Education | 2022 |
| Full FAT Television Limited | Information & communication | 2015 |
| Full FAT Things Limited | Information & communication | 2010 |
| Full Spectrum Coffee Limited | Manufacturing | 2022 |
| Fully Fledged Ltd | Education | 2022 |
| Funding Space Ltd | Financial services | 2022 |
| Fundraising for Clubs Ltd | Information & communication | 2023 |
| Funeral Services (Telford) Limited | Professional & scientific | 2015 |
| Fungal Biology Limited | Administrative & support | 2006 |
| Furlong Park Residents Management Company Limited | Households | 2019 |
| Furrowfields Management Company Limited | Households | 2006 |
| Furrows Holdings Limited | Real estate | 1996 |
| Furrows Pension Scheme Trustees Limited | Financial services | 2009 |
| Furrows Properties Limited | Construction | 2017 |
| Fuse Creative Media Limited | Arts & recreation | 2015 |
| Fusion Hair Design Studio Ltd | Other services | 2012 |
| Future Arbor Limited | Agriculture & fishing | 2008 |
| Future Homes Group Limited | Professional & scientific | 2015 |
| Future ME Aesthetics + Orthopaedics Ltd | Health & social care | 2024 |
| Future Physique Limited | Extraterritorial | 2002 |
| FWK Law Limited | Professional & scientific | 2025 |
| G & H Price Properties Limited | Real estate | 2023 |
| G & L Bullock Limited | Other services | 2001 |
| G & S Kulemeka Limited | Health & social care | 2012 |
| G a Worton Limited | Professional & scientific | 2014 |
| G and M Lewis LLP | | 2025 |
| G and P Domestic Cleaning Limited | Professional & scientific | 2016 |
| G Bissell & Sons Limited | Construction | 2006 |
| G H Davies Farms Limited | Agriculture & fishing | 2010 |
| G H Davies Holdings Limited | Agriculture & fishing | 1959 |
| G H Davies Machinery Limited | Administrative & support | 2016 |
| G J Brien Engineering Associates Ltd | Professional & scientific | 2024 |