| Fallow (Benton) Residents Management Company Limited | Real estate | 2021 |
| Falmouth Limited | Professional & scientific | 2000 |
| Falsgrave Crescent Management Company Limited | Households | 2002 |
| Falsgrave Leisure and Lodges LLP | | 2019 |
| Falx Ltd | Information & communication | 2023 |
| Faman Barbers Ltd | Other services | 2025 |
| Fame Impex Limited | Wholesale & retail | 2015 |
| Family Business Specialist Limited | Administrative & support | 2011 |
| Family Fund Trading Limited | Wholesale & retail | 2007 |
| Family Fund Trust | Health & social care | 1996 |
| Fanaden Limited | Real estate | 1985 |
| Fang Oslo Ltd | Manufacturing | 2025 |
| Fangfoss and Bolton Jubilee Park Company | Arts & recreation | 2005 |
| Fanning Education Services Ltd | Education | 2022 |
| Fantastik Brands Limited | Wholesale & retail | 2020 |
| FAR and Away Motorhomes Limited | Administrative & support | 2022 |
| FAR FAR OUT Ltd | Professional & scientific | 2024 |
| Farah Beauty Ltd | Other services | 2024 |
| Farazia Smart Trade Ltd | Wholesale & retail | 2025 |
| Farewells Funerals Ltd | Other services | 2023 |
| Fargate TAP Limited | Hospitality | 2024 |
| Farleigh Fields (Backwell) Management Company Ltd | Households | 2025 |
| Farm & Forestry Machinery Ltd | Wholesale & retail | 2019 |
| Farm to Fridge Ltd | Wholesale & retail | 2024 |
| Farm View Accountancy Ltd | Professional & scientific | 2009 |
| Farmvets Southwest Limited | Professional & scientific | 2005 |
| Farndale Free Range Limited | Manufacturing | 1999 |
| Farquhar Consulting & Advisory Limited | Administrative & support | 2025 |
| Farquhar Consulting & Investments Holdings Limited | Administrative & support | 2025 |
| Farr Interiors Limited | Professional & scientific | 2016 |
| Farrar Levin Legal Recruitment Limited | Administrative & support | 2011 |
| Farropen Limited | Wholesale & retail | 2026 |
| Farthing Court Management Limited | Households | 1993 |
| Fasd Network UK | Education | 2014 |
| Fast Entertainment Limited | Hospitality | 2017 |
| Fast Forward Innovation Ltd | Professional & scientific | 2022 |
| Fastpack (Fasteners and Packaging) Limited | Wholesale & retail | 1981 |
| FAT Pigeon PUB Company Limited | Hospitality | 2015 |
| Fatherford View (Okehampton) Management Company Limited | Households | 2022 |
| Fauconberg Belasyse LLP | | 2017 |
| Faulkner James Ltd | Real estate | 2021 |
| Fawley Judge Business Solutions Ltd | Professional & scientific | 2013 |
| Faysure Ltd | Health & social care | 2021 |
| FB Gribbin Limited | Construction | 2016 |
| FB Properties (York) Ltd | Real estate | 2020 |
| FB Resources Ltd | Administrative & support | 2013 |
| FB Van Sales Ltd | Wholesale & retail | 2013 |
| FBC Music Ltd | Arts & recreation | 2026 |
| FBL Recycling Limited | Water & waste | 2012 |
| Fcba Limited | Professional & scientific | 1999 |
| FCE Developments Limited | Construction | 2011 |
| FCM Strategies Ltd | Professional & scientific | 2026 |
| FD Check App Ltd | Professional & scientific | 2024 |
| FD Check Ltd | Professional & scientific | 2023 |
| Feather Cycles Limited | Manufacturing | 2012 |
| Featherstone Bidco Limited | Financial services | 2025 |
| Featherstone Holdco Limited | Financial services | 2025 |
| Featherstone Midco Limited | Financial services | 2025 |
| Featherstone Topco Limited | Financial services | 2025 |
| FEB 31ST UK Ltd | Wholesale & retail | 2021 |
| Feet & Function Ltd | Health & social care | 2021 |
| Feetuk Limited | Real estate | 2012 |
| Felbiz Ltd | Information & communication | 2024 |
| Fell Fitness Community Coaching Ltd | Education | 2025 |
| Fell Fitness Community Ltd | Arts & recreation | 2025 |
| Fellowes Farm Equine Clinic Limited | Professional & scientific | 2008 |
| Fellsmere Ltd | Water & waste | 2024 |
| Felspar Consulting Limited | Information & communication | 2003 |
| Felu Trading & Development Ltd | Wholesale & retail | 2021 |
| Fenby Gardens (Scarborough) RTM Company Limited | Households | 2024 |
| Fendt and Sharp Limited | Professional & scientific | 2007 |
| Fenton Meadows Manco (Barmby) Limited | Real estate | 2024 |
| Fenton Simpson Financial Services Ltd | Financial services | 2003 |
| Fera Science Group Limited | Professional & scientific | 2023 |
| Fera Science Limited | Professional & scientific | 2015 |
| Ferndale Locum Services Ltd | Health & social care | 2025 |
| Fernroyd Ventures Limited | Professional & scientific | 2010 |
| Fernroyd Ventures Two Limited | Professional & scientific | 2013 |
| Ferry Quay Developments Limited | Extraterritorial | 1989 |
| Fertility Talent Limited | Extraterritorial | 2021 |
| Festival Extras Limited | Arts & recreation | 2009 |
| Festival of FUN (York) Ltd | Wholesale & retail | 2019 |
| Festival of FUN (Yorkshire) Ltd | Wholesale & retail | 2026 |
| Festival of Quilts Limited | Arts & recreation | 1998 |
| Festival Park (Easton) Residents Management Company Limited | Households | 2022 |
| Fetter TAP Ltd | Hospitality | 2024 |
| Fettle Bookkeeping & Tax Ltd | Professional & scientific | 2021 |
| Fevaritte Ltd | Hospitality | 2025 |
| Feversham Crescent Management Company (York) Limited | Households | 1994 |
| Feversham House (York) Management Company Limited | Households | 1984 |
| Fewell Wealth Management Limited | Professional & scientific | 2024 |
| FFS (York) Limited | Wholesale & retail | 2020 |
| FG Group Holdings Limited | Financial services | 2018 |
| Fibre Property Investment Limited | Real estate | 2024 |
| Fibre Property Managment Limited | Real estate | 2024 |
| Fibrenet Office Services Ltd | Extraterritorial | 2013 |
| Fibrenet Office Solutions Limited | Wholesale & retail | 1999 |
| Fibrescale Limited | Extraterritorial | 2015 |
| Fiddington Fields (Tewkesbury) Management Company Limited | Households | 2023 |
| Fidova Limited | Information & communication | 2025 |