| Fore Brands Golf Ltd | Wholesale & retail | 2024 |
| Forensic Psychology Consultancy Services Limited | Public administration | 2006 |
| Foresight Residential (Holdings) Limited | Professional & scientific | 2004 |
| Foresight Residential Limited | Health & social care | 2004 |
| Forest Court Management Company (Harrogate) Limited | Households | 1975 |
| Forest Electrical & Data Services Limited | Construction | 2018 |
| Forest Grange Mews Management Co. Limited | Households | 1986 |
| Forest Moor Properties Limited | Extraterritorial | 2005 |
| Forest Villas Management Ltd | Real estate | 2016 |
| Forethought Software Limited | Information & communication | 2015 |
| Forever Changes Strip OUT Limited | Water & waste | 2025 |
| Forge Education Ltd | Education | 2024 |
| Forj Creative Brands Ltd | Wholesale & retail | 2025 |
| Forklift Pro Solutions Ltd | Wholesale & retail | 2024 |
| Formare Consultancy Ltd | Professional & scientific | 2026 |
| Formline Ltd | Wholesale & retail | 2020 |
| Forrest Jackson Limited | Extraterritorial | 2025 |
| Forscite Ltd | Professional & scientific | 2018 |
| Forstner Bands UK Ltd | Wholesale & retail | 2021 |
| Forthplus Benefits Limited | Administrative & support | 2015 |
| Fortifynet Cybersecurity Group Ltd | Extraterritorial | 2022 |
| Fortifynet Cybersecurity International Limited | Wholesale & retail | 2022 |
| Fortifynet Cybersecurity Ltd | Wholesale & retail | 2024 |
| Fortuna Networks Holdings Ltd | Financial services | 2018 |
| Forward Real Estate Limited | Real estate | 2023 |
| Fosscar Limited | Real estate | 2026 |
| Foster and Pollard Limited | Extraterritorial | 2012 |
| Foster Lawson Limited | Administrative & support | 2023 |
| Foster Phillips Limited | Wholesale & retail | 2021 |
| Foulds Lifts Ltd | Manufacturing | 2019 |
| Found Here Ltd | Wholesale & retail | 2023 |
| Found Hour Limited | Information & communication | 2025 |
| Foundry Tuition Ltd | Education | 2022 |
| Fountainhead Management Company Limited | Households | 2001 |
| Fountainhead Ventures U.K. Limited | Construction | 1999 |
| Fountains House Limited | Professional & scientific | 2007 |
| Four Acre Finance Ltd | Financial services | 2026 |
| Four Paws Mobile Ltd | Other services | 2015 |
| Fourcrest Limited | Financial services | 2025 |
| Fourth Floor Capital Ltd | Real estate | 2021 |
| Fourth Floor Consultancy Ltd | Professional & scientific | 2022 |
| Fourth Floor Media Ltd | Administrative & support | 2013 |
| Fourth Space Leadership Company Ltd | Professional & scientific | 2026 |
| FOX DEN Creative Ltd | Professional & scientific | 2024 |
| Foxgold Lifestyle Limited | Information & communication | 2023 |
| Foxtrot Solutions Ltd | Professional & scientific | 2025 |
| Foxwell Limited | Extraterritorial | 2025 |
| Foxwind Limited | Extraterritorial | 2025 |
| FRAG1LE Ltd | Wholesale & retail | 2020 |
| Franchise Pro Limited | Professional & scientific | 2003 |
| Francillon Ltd | Professional & scientific | 2026 |
| Francis W. Downing Limited | Professional & scientific | 2015 |
| Frank Ascendancy Limited | Other services | 2014 |
| Frank Marshall & Sons Limited | Real estate | 2012 |
| Frank Pickles (Insurance Brokers) Limited | Financial services | 1960 |
| Franklin Mount Ltd | Hospitality | 2019 |
| Franklin Psychology Limited | Education | 2026 |
| Franklin Road Management Limited | Households | 2014 |
| Franklyn Care Ltd | Professional & scientific | 2017 |
| Fraser Lockhart Limited | Extraterritorial | 2025 |
| Fraud Prevention Limited | Extraterritorial | 2013 |
| Frazers of Harrogate Limited | Education | 2003 |
| Frazier Limited | Wholesale & retail | 2024 |
| Freakish Limited | Extraterritorial | 2026 |
| Fred Pilkington and SON Limited | Extraterritorial | 1981 |
| FREDD1E Ltd | Extraterritorial | 2020 |
| Frederick Lawther Limited | Construction | 1987 |
| Frederiks Limited | Hospitality | 2026 |
| Fredland Properties Ltd | Real estate | 2021 |
| Free the People Ltd | Information & communication | 2025 |
| Freedom Transport Solutions Ltd | Transport & logistics | 2024 |
| Freelancerbyfrey Ltd | Administrative & support | 2025 |
| Freeman Jones Developments LLP | | 2007 |
| Freeman's Court (Harrogate) Limited | Households | 2018 |
| Fresh Frames Ltd | Construction | 2024 |
| Fresh INK Works CIC | Education | 2023 |
| Fresh Stop Limited | Wholesale & retail | 2023 |
| Freshly Maid (Harrogate) Limited | Other services | 2018 |
| Frey U.K. Limited | Professional & scientific | 2022 |
| Friend Ship Food Trading Ltd | Wholesale & retail | 2026 |
| Frieze DOT Plus Limited | Arts & recreation | 2020 |
| Fringill Mill Management Company Limited | Households | 2022 |
| Frisk Reports Limited | Information & communication | 2018 |
| Frnk Solutions Ltd | Public administration | 2023 |
| Fromarsh Limited | Extraterritorial | 2023 |
| Frontispiece Fine Furnishings Ltd | Wholesale & retail | 2013 |
| Fryday (Starbeck) Limited | Hospitality | 2020 |
| FS & CL Limited | Wholesale & retail | 2017 |
| FS Recruitment Services Ltd | Administrative & support | 2026 |
| FTS Electrical Limited | Construction | 2015 |
| Fuel Smart Solutions Ltd | Wholesale & retail | 2025 |
| Fuji Group Ltd | Manufacturing | 2024 |
| Fulcon Ltd | Construction | 2023 |
| Fullbright Limited | Professional & scientific | 2013 |
| Fullserviceplatform Limited | Administrative & support | 2012 |
| Fulton Houseman Properties Limited | Real estate | 2023 |
| Fulwith Mill Lane House Limited | Real estate | 2022 |
| Fundamentals First Limited | Information & communication | 2010 |
| Fundsnet Limited | Financial services | 2006 |
| Funny Dog Holdings Ltd | Financial services | 2026 |