| Factor Search Ltd | Administrative & support | 2024 |
| Factors of X Ltd | Professional & scientific | 2022 |
| Fadl Construction Company Ltd | Wholesale & retail | 2024 |
| FAH Homes Limited | Real estate | 2025 |
| Fair Fortune Limited | Information & communication | 2025 |
| Fairbank 4 Limited | Real estate | 2004 |
| Fairfax London Limited | Extraterritorial | 2026 |
| Fairfax Storage Limited | Real estate | 2007 |
| Fairfield Corporate Consultants Ltd | Professional & scientific | 2025 |
| Fairhurst (Harrogate) Property Management Limited | Households | 1990 |
| Fairlawn (Harrogate) Limited | Households | 1987 |
| Fairways Accounts and Tax Limited | Extraterritorial | 2016 |
| Falafel HUT Ltd | Hospitality | 2021 |
| Falcon Chiropractic Ltd | Health & social care | 2017 |
| Falcon Rail Limited | Public administration | 2022 |
| Falconettis Limited | Extraterritorial | 2012 |
| Fallons Limited | Construction | 2016 |
| Fallons Modular Limited | Manufacturing | 2025 |
| Fallow Construction & Developments Ltd | Construction | 2004 |
| Fallowdale Homes Limited | Real estate | 2022 |
| False Inclines Ltd | Professional & scientific | 2023 |
| Faltrix Limited | Information & communication | 2025 |
| Famous Folks Limited | Extraterritorial | 2012 |
| Fanbay.Co.Uk Ltd | Information & communication | 2020 |
| Fancy Food G Ltd | Hospitality | 2026 |
| Fantasy Kids Clubs Ltd | Education | 2010 |
| Fanvu Ltd | Information & communication | 2022 |
| Farball Coatings (UK) Limited | Wholesale & retail | 1999 |
| Fargo Consulting Limited | Professional & scientific | 2009 |
| Farmacc Limited | Professional & scientific | 2018 |
| Farooq Basha Pisari Ltd | Wholesale & retail | 2024 |
| Farooq Holdings Limited | Financial services | 2018 |
| Farrah's of Harrogate Limited | Manufacturing | 2011 |
| Fast Cars Limited | Extraterritorial | 2011 |
| Fast Forward Technology Ltd | Information & communication | 2010 |
| Faster Ltd | Extraterritorial | 2012 |
| Fastvat UK Limited | Professional & scientific | 2016 |
| FAT Cat Consortium Limited | Information & communication | 2021 |
| Fattorini Jewellers Ltd | Wholesale & retail | 2020 |
| Faustino Construction (Harrogate) Ltd | Construction | 2026 |
| Favourable Limited | Extraterritorial | 2012 |
| Fawkes Merchandise Ltd | Wholesale & retail | 2025 |
| FBC (Yorkshire) Ltd | Arts & recreation | 2014 |
| FBC Harrogate Limited | Arts & recreation | 2021 |
| Fbeluxury International Ltd | Wholesale & retail | 2025 |
| Fbpc Limited | Real estate | 2003 |
| FBS Accountants Ltd | Professional & scientific | 2016 |
| FCR Holdings Ltd | Transport & logistics | 2023 |
| FDS Harrogate Limited | Arts & recreation | 2002 |
| Feather and Shine Limited | Administrative & support | 2026 |
| Feature Fireplaces Harrogate Limited | Construction | 2009 |
| Febgate International Trading Limited | Other services | 2024 |
| Federal-Mogul Aftermarket UK Limited | Wholesale & retail | 1927 |
| Federal-Mogul Friction Products Limited | Manufacturing | 1948 |
| Feed Haul Limited | Transport & logistics | 2025 |
| Feliz Navidad Limited | Extraterritorial | 2021 |
| Felliscliffe Limited | Hospitality | 2024 |
| Fenimore Group Limited | Extraterritorial | 2025 |
| Fenwick Industries Limited | Extraterritorial | 2026 |
| Fergus Ltd | Extraterritorial | 2013 |
| Feridene Management Company Limited | Households | 2020 |
| Ferodo Limited | Professional & scientific | 1965 |
| Ferrer Pharma Great Britain Limited | Wholesale & retail | 2022 |
| Ferruccio Limited | Extraterritorial | 2026 |
| Ferrum Atrium Limited | Manufacturing | 2016 |
| Fersan for Trade Ltd | Wholesale & retail | 2021 |
| FEST1VAL Limited | Extraterritorial | 2026 |
| FH London (EOT) Limited | Financial services | 2024 |
| FH London (Holdings) Limited | Financial services | 2016 |
| Fieldhurst Estates Ltd | Real estate | 2018 |
| Fieldhurst Management Company Limited | Other services | 2008 |
| Fifteen Zero Fifteen Limited | Professional & scientific | 2012 |
| Fifthday Green Limited | Professional & scientific | 2008 |
| Fify Ltd | Information & communication | 2016 |
| FIG Tree Property Group Limited | Hospitality | 2023 |
| Fight Clean Ltd | Other services | 2025 |
| Figondtech Ltd | Information & communication | 2025 |
| Figs Investments Limited | Financial services | 2021 |
| Figs Property Limited | Real estate | 2021 |
| Figurehead Studios Ltd | Arts & recreation | 2022 |
| Fiit Training Ltd | Arts & recreation | 2018 |
| Fill & Waye Limited | Professional & scientific | 2023 |
| Fillet Steak Ltd | Extraterritorial | 2012 |
| Filotimo Creative Ltd | Information & communication | 2022 |
| Finance DB Limited | Professional & scientific | 2017 |
| Financial Peace of Mind Limited | Financial services | 2022 |
| Financial Picture Limited | Professional & scientific | 2016 |
| Finch Commercial Insurance Brokers Ltd | Financial services | 2001 |
| Fine Black Line Limited | Professional & scientific | 2009 |
| Finefit Installations Limited | Construction | 2006 |
| Fineline VAR Ltd | Manufacturing | 1981 |
| Finir Limited | Wholesale & retail | 2011 |
| FINITE360 Limited | Professional & scientific | 2024 |
| Finn-Tech Limited | Extraterritorial | 2026 |
| Finton Lyle Limited | Professional & scientific | 1995 |
| Fiona Jones Coaching Ltd | Professional & scientific | 2025 |
| Fiona Seth-Smith Ltd | Health & social care | 2017 |
| Fiona Sherwood Limited | Professional & scientific | 2011 |
| Firecrest (Holdings) Limited | Professional & scientific | 1997 |
| Firinci Oglu Foodstuff Trading Ltd | Extraterritorial | 2022 |