| Four Walls Design Ltd | Professional & scientific | 2024 |
| Fourbell Limited | Administrative & support | 2014 |
| Fours Seasons (Bvmt) Limited | Health & social care | 2014 |
| Fourwheeldrive York Ltd | Education | 2023 |
| Foveo Group Ltd | Professional & scientific | 2025 |
| Fowlmere Sheet Metal Ltd | Manufacturing | 2025 |
| Fownd Limited | Administrative & support | 2008 |
| FOX and Co Estates Ltd | Real estate | 2025 |
| FOX Autos Limited | Wholesale & retail | 2021 |
| FOX Corner Freehold Limited | Households | 2019 |
| FOX Glove Contracting Limited | Construction | 1994 |
| FOX Holdings Limited | Professional & scientific | 1998 |
| FOX Telecomms Limited | Information & communication | 2023 |
| FP Mccafferty Ltd | Construction | 2022 |
| FPS Media Ltd | Information & communication | 2013 |
| FPS Plumbing & Heating Ltd | Construction | 2009 |
| Fragrantix Ltd | Wholesale & retail | 2025 |
| Fran COX Consulting Ltd | Education | 2024 |
| Francis James Limited | Education | 2024 |
| Francis Property Group Limited | Real estate | 2023 |
| Franco Consultancy Ltd | Professional & scientific | 2024 |
| Franco Ices Limited | Manufacturing | 2003 |
| Franjieh Holdings Limited | Real estate | 2024 |
| Frank Fernandes PM Ltd | Professional & scientific | 2025 |
| Frank Harkin Limited | Professional & scientific | 2015 |
| Frank Media Solutions Ltd | Professional & scientific | 2023 |
| Franklin Court Management Company Limited | Professional & scientific | 2004 |
| Franklin Roofing and Property Services Limited | Construction | 2012 |
| Fraser Prodev Ltd | Real estate | 2022 |
| Fraser Property Management Limited | Real estate | 2006 |
| Fraser's Construction Limited | Construction | 2020 |
| Fratelli Ampthill Limited | Hospitality | 2016 |
| Fratelli Bosco Limited | Wholesale & retail | 1995 |
| Fratelli Holdings Limited | Financial services | 2025 |
| Fratelli Property Developments Limited | Real estate | 2020 |
| Fratton Road Limited | Real estate | 2012 |
| Fred's World Limited | Wholesale & retail | 2012 |
| Frederick Lean Design Limited | Professional & scientific | 2020 |
| Fredericks Court Management Co. Limited | Households | 1986 |
| Free Eco Grant 4 U Ltd | Administrative & support | 2025 |
| Free Range Stays Ltd | Real estate | 2019 |
| Freedom Commercial Property Ltd | Real estate | 2019 |
| Freedom Convenience Ltd | Wholesale & retail | 2017 |
| Freedom From Abuse Community Interest Company | Public administration | 2018 |
| Freedom Retail Group Holdings Ltd | Financial services | 2023 |
| Freedom RV LLP | | 2024 |
| Freedom Wines Limited | Wholesale & retail | 2014 |
| Freestyle Internet Services Limited | Information & communication | 2003 |
| Fresh Air Nordic Walking Limited | Wholesale & retail | 2019 |
| Fresh Energy Consulting Ltd | Professional & scientific | 2020 |
| Fresh Outlook Windows Ltd | Administrative & support | 2020 |
| Fresh Start Cleaners Ltd | Administrative & support | 2025 |
| Freshfields Property Development Limited | Construction | 2004 |
| Freshly Ground Apps Ltd | Information & communication | 2016 |
| Freshsteam Bedford Ltd | Other services | 2026 |
| Friendly Nettle Ltd | Professional & scientific | 2018 |
| Friends for Life Bedfordshire | Professional & scientific | 2012 |
| Friends Movers Ltd | Transport & logistics | 2025 |
| Friends of ST Denys, Colmworth | Other services | 2014 |
| Friendsreconnected Ltd | Administrative & support | 2021 |
| Frigieri & Co London Ltd | Wholesale & retail | 2023 |
| Frith Fields Management Company Ltd | Real estate | 2020 |
| Frnhz (Bedford) Ltd | Other services | 2019 |
| Front Desk Concierge Ltd | Administrative & support | 2025 |
| Front ROW Developments UK Ltd | Construction | 2018 |
| Front ROW Property Investments Ltd | Real estate | 2016 |
| Front ROW Property Services Ltd | Real estate | 2019 |
| Frontline I.C.S Limited | Administrative & support | 2019 |
| Frontline Property Solutions Ltd | Construction | 2023 |
| Frontline Sports Limited | Information & communication | 2003 |
| Frosse Ltd | Information & communication | 2016 |
| Frost Invest Ltd | Professional & scientific | 2023 |
| Frozen Deals Ltd | Hospitality | 2018 |
| Frozen Food (Bedford) Ltd | Wholesale & retail | 2025 |
| Frugal Factotums Limited | Real estate | 2015 |
| Fruits and Vegetables Bazar Limited | Wholesale & retail | 2025 |
| FRY Estate Agents Limited | Real estate | 2019 |
| FSL Academy Limited | Arts & recreation | 2016 |
| FSR Construction Engineering Ltd | Construction | 2024 |
| FSZ Services Ltd | Wholesale & retail | 2025 |
| FT Kitchen Installation Ltd | Construction | 2022 |
| FTB2025 Limited | Other services | 2012 |
| FTS Esports Ltd | Arts & recreation | 2016 |
| FTS Property Ltd | Real estate | 2019 |
| FU Wong Consultancy Limited | Administrative & support | 2021 |
| Fuel House Gyms Ltd | Arts & recreation | 2025 |
| Fuel Medic Ltd | Wholesale & retail | 2024 |
| Fuelthemusic Community C.I.C. | Information & communication | 2021 |
| Fuis Studio Ltd | Information & communication | 2006 |
| Fujifilm Electronic Materials UK Limited | Manufacturing | 1972 |
| Fujifilm Healthcare UK Limited | Wholesale & retail | 1996 |
| Fujifilm Sonosite Ltd | Wholesale & retail | 2000 |
| Fujifilm UK Limited | Wholesale & retail | 1976 |
| Fulfillpro Ltd | Wholesale & retail | 2026 |
| Full Beam Capital Limited | Real estate | 2016 |
| Full Bottle Boot Camps & Fitness Limited | Arts & recreation | 2015 |
| Full Circle Contracting Services Limited | Extraterritorial | 2012 |
| Full Circle Website Design Ltd | Information & communication | 2024 |
| Full Moon Carwash Ltd | Administrative & support | 2025 |
| Full on Limited | Professional & scientific | 2024 |