| Fenton & Ralph Ltd | London | 2015 |
| Fenton Brunt Club Limited | North Berwick | 2017 |
| Fenton GEE Entertainment Ltd | Harrow | 2023 |
| Fenwick Falcons Football Club CIC | London | 2025 |
| Fenz Ltd | Farnham | 2019 |
| Fera Tattoo Company Ltd | Plymouth | 2025 |
| Feral Gaming Ltd. | Sandhurst | 2015 |
| Feral Peacock Limited | Forest Row | 2018 |
| Feral Productions | Hereford | 2009 |
| Feranmi Limited | Liverpool | 2024 |
| Ferartu Ltd | East Dulwich | 2020 |
| Ferdinand Football Group Ltd | Chelmsford | 2021 |
| Ferdinand Services Limited | London | 1996 |
| Fergal O'Brien Training Limited | Cheltenham | 2015 |
| Fergus Flanagan Ltd | London | 2020 |
| Fergus Marr Limited | Brentwood | 2020 |
| Fergus Oliver Ltd | Glasgow | 2021 |
| Ferguson Memorial Museum Ltd | Hillsborough | 2025 |
| Ferjani&Williams Limited | Sevenoaks | 2016 |
| Ferli Arts Ltd | Sheffield | 2024 |
| Fermanagh Arts Festival | Enniskillen | 2007 |
| Fermanagh Experiences Ltd | Belcoo | 2025 |
| Fermanagh FUN Farm C.I.C. | Lisbellaw | 2019 |
| Fermanagh Motorcycle Club Ltd | Enniskillen | 2017 |
| Fermata Studio Ltd | London | 2026 |
| Fermynwoods Contemporary Art Limited | Kettering | 2005 |
| Fern Art Limited | Brentwood | 2024 |
| Fern Audio Limited | Bristol | 2024 |
| Fern Culture Limited | Dover | 2025 |
| Fern Gore Wildlife Company Ltd | London | 2005 |
| Fern Music UK Ltd Ltd | Peterborough | 2022 |
| Fern Whelan Ltd | Rugby | 2022 |
| Fern Whisper Studio Ltd | London | 2025 |
| Ferndown Fitness Ltd | Ferndown | 2018 |
| Ferndown Forest Golf Course Limited | Ferndown | 2011 |
| Ferndown Wayfarers Cricket and Sports Club Limited | Ringwood | 1966 |
| Ferneylea Sporting Ltd | Haddington | 2021 |
| Fernham Village Trust | Faringdon | 2008 |
| Fernhurst Cricket Club | Haslemere | 2024 |
| Fernhurst Tennis Club Ltd | Haslemere | 2022 |
| Fernreel Limited | Cardiff | 2008 |
| Ferns Gardening Services Ltd | Ryton | 2024 |
| Ferocious Dog Promotions Ltd | Mansfield | 2023 |
| Ferodo Bridges CIC | London | 2016 |
| Ferox Racing Limited | Bristol | 2017 |
| Ferrensby Fireworks Ltd | North Yorkshire | 2002 |
| Ferret Live Productions CIC | Preston | 2022 |
| Ferri Fit UK Limited | Motherwell | 2018 |
| Ferriby Hall Squash & Racketball Club Limited | Market Weighton | 2026 |
| Ferriby Hall Squash Club Limited | East Yorkshire | 1993 |
| Ferris by Design Limited | Staines-Upon-Thames | 2019 |
| Ferris Leisure Ltd | Redditch | 2008 |
| Ferris Wheel Hire Company Ltd | Bury | 2026 |
| Ferris Wheel UK Limited | Bolton | 2025 |
| Ferrosity Limited | Belfast | 2008 |
| Ferry Farm Livery Ltd | Beverley | 2013 |
| Ferry Lane FC Ltd | London | 2020 |
| Ferrybank Properties Limited | Orlingbury | 2003 |
| Ferrymere Ltd | Axminster | 2022 |
| Fertile Ground Dance Ltd | Newcastle Upon Tyne | 2017 |
| Fervid Fitness Ltd | Flint | 2020 |
| Fervo Globo Ltd | London | 2021 |
| Fery's Dreamworld Limited | Isleworth | 2025 |
| Fest Half Limited | Leicester | 2022 |
| Festability CIC | Ashford | 2019 |
| Festaff Limited | Carlisle | 2012 |
| Festevent Group Ltd | Grays | 2025 |
| Festiva Ltd | Waltham Abbey | 2017 |
| Festival & Event Bar Services Ltd | Macclesfield | 2024 |
| Festival and Event Solutions Limited | New Mills | 2021 |
| Festival Arts (UK) Limited | Birmingham | 2005 |
| Festival Bloodstock Limited | Bristol | 2016 |
| Festival Cordiale Ltd | Chessington | 2026 |
| Festival Dreamers Racing Club Ltd | Canvey Island | 2024 |
| Festival Entertainment Ltd | Dudley | 2025 |
| Festival Equestrian Events Limited | Huntingdon | 2021 |
| Festival Events Limited | Belfast | 2024 |
| Festival Extras Limited | York | 2009 |
| Festival Film and Television Limited | Borehamwood | 1992 |
| Festival Fireworks Displays Ltd | Wrexham | 2025 |
| Festival Fireworks Limited | Wrexham | 2001 |
| Festival for YOU Ltd | Bishop'S Stortford | 2021 |
| Festival Group Ltd | Epsom | 2020 |
| Festival Holdings Limited | Chelmsford | 2017 |
| Festival Insights Limited | Stockport | 2005 |
| Festival Leisure Limited | Bristol | 1986 |
| Festival Live Limited | Spalding | 2009 |
| Festival of British Eventing Ltd | Tetbury | 2019 |
| Festival of Champions Limited | Blackburn | 2018 |
| Festival of Choirs Ltd | London | 2025 |
| Festival of Commoning Ltd | London | 2024 |
| Festival of Europe CIC | Ilkley | 2022 |
| Festival of Fools Ltd | Co Antrim | 2006 |
| Festival of Pagans & Witches Ltd | Kenilworth | 2022 |
| Festival of Quilts Limited | York | 1998 |
| Festival of Spanish Theatre (London) Ltd | London | 2014 |
| Festival of Sport Limited | Lichfield | 2020 |
| Festival of the Iberian Horse Ltd | Launceston | 2023 |
| Festival of Thrift CIC | Stockton-On-Tees | 2015 |
| Festival on the Farm Ltd | Swindon | 2024 |