| Federation Hotels Group | Manchester | 2012 |
| Federation of Chemical Associations | Bournemouth | 2001 |
| Federation of First AID Training Organisations Ltd | Wimborne | 2007 |
| Federation of Small Businesses Limited | Blackpool | 2010 |
| Federation of Tax Advisers Limited | London | 2008 |
| Federation of UK Fujian Chinese Limited | London | 2015 |
| Federation of Uk-South China Culture and Commerce | London | 2015 |
| Fedor Management Limited | Southampton | 2017 |
| Fedora Holdings Ltd | Norwich | 2021 |
| Fedorchenko Yachting Limited | Coventry | 2016 |
| FEE FI FO FUM Ltd | Barnet, | 2017 |
| Feed Namibia Ltd | Ruislip, | 2025 |
| Feed the World Group Ltd | Erith | 2020 |
| Feedback Holdings Ltd | Norwich | 2022 |
| Feedex International Limited | Newmarket | 1973 |
| Feedmasters Limited | Langport | 2003 |
| Feedstar Ltd | London | 2026 |
| Feefo Ltd | Petersfield | 2014 |
| Feejee Mermaid Live Ltd | London | 2022 |
| Feel Good Massage Ltd | London | 2023 |
| Feel Secure Limited | Haywards Heath | 2021 |
| Feel to Find Limited | London | 2018 |
| Feel-Energy Ltd | London | 2022 |
| Feeling Yachting Limited | Blackpool | 2021 |
| Feellife Health.Uk Ltd | Beckenham | 2016 |
| Feellife Ltd | Birmingham | 2014 |
| Feelo Co., Ltd | London | 2011 |
| Feeping Creatures Ltd | Crediton | 2010 |
| Feet of Clay Limited | Hinckley | 2012 |
| Feetclinic Limited | Eastbourne | 2015 |
| Feetprint Ltd | Lincoln | 2009 |
| FEF Industry Group Limited | West Midlands, England | 2024 |
| FEF Trustees Ltd | Littleborough | 2021 |
| Fegg Hayes Pottery Property Limited | Staffordshire | 2006 |
| Feigenbaum Software Ltd | Hadleigh | 2009 |
| Feijoa Holdings Limited | Bishops Stortford | 2019 |
| Feijter Management Ltd | Kenilworth | 2019 |
| Feiwen Kiss International Investment (UK) Co., Ltd. | Beckenham | 2019 |
| Feiyang Speaker Limited | London | 2016 |
| Fejena (UK) Limited | London | 2010 |
| Felday Engineering Limited | London | 2022 |
| Feldon House Limited | Northampton | 2006 |
| Felicia & Devon Design Limited | London | 2019 |
| Felicita Properties Limited | Stowmarket | 2024 |
| Felicitas Ltd | Colchester | 2016 |
| Felicitas Management Limited | Bridlington | 2021 |
| Felin Geri Activity Centre Limited | Llanelli | 2012 |
| Felin WEN Farm Limited | Pontardawe | 2015 |
| Felina Limited | London | 2025 |
| Felison Industrial Co., Ltd | West Midlands, England, | 2016 |
| Felite Auto Parts Co., Ltd. | Beckenham | 2017 |
| Felix - Bedachung & Zimmerei Limited | London | 2018 |
| Felix Court RTM Company Limited | Hove | 2023 |
| Felix Engineering Limited | Plymouth | 1986 |
| Felix Group Contractors Limited | Mildenhall | 2023 |
| Felixstowe Beach Walkers FC Ltd | Felixstowe | 2022 |
| Felixstowe Car Centre Limited | Felixstowe | 2010 |
| Felixstowe Containers Limited | Felixstowe | 2020 |
| Felixstowe Electrical Services Ltd. | Ipswich | 2018 |
| Felixstowe Limited | Felixstowe | 2010 |
| Felixstowe Shipping Containers Limited | Felixstowe | 2020 |
| Feliz Navidad Limited | Harrogate | 2021 |
| Felizvivencia Ltd | Manchester | 2024 |
| Fell View Property Developments Ltd | Carlisle | 2021 |
| Felling by Pass Limited | Gateshead | 2021 |
| Felling Property 2 Ltd | Gateshead | 2015 |
| Fellow Technologies Ltd | Crawley | 2013 |
| Fellowship Universal Global Enterprises Limited | | 1995 |
| Fellside Physiotherapy Ltd | Wigton | 2017 |
| Fellsman Limited | London | 2014 |
| Fellsman Railtours Limited | London | 2014 |
| Fellview Estates Ltd | Salford | 1998 |
| Fellworld Limited | Banbury | 1994 |
| Felmoor Chase Management Company Limited | Dunmow | 2023 |
| Felspar Close 1959 Limited | London | 2014 |
| Felsted Global Education Limited | Dunmow | 2006 |
| Feltham 1967 Limited | Feltham | 2014 |
| Feltonhall Properties Ltd | Manchester | 2007 |
| Feltport Estates Limited | Bury St. Edmunds | 2004 |
| FEM Clinical Education Specialists Services Limited | Gravesend | 2023 |
| Femaho Ltd | Manchester | 2025 |
| Femalefirst Limited | Wigan | 2012 |
| Femcee Ltd | Norwich | 2002 |
| Femel Real Estate Ltd | London | 2015 |
| Femex Limited | London | 2005 |
| Femina Solutions Limited | London | 2014 |
| Feminenza International Ltd | Malvern | 2005 |
| Femme Connection Limited | London | 2023 |
| Femundsenden Taxi Limited | London | 2025 |
| FEN 153 NO 2 Ltd | Manchester | 2019 |
| Fence and Forget Limited | Llanon | 2025 |
| Fence Heroes Ltd | Saffron Walden | 2026 |
| Fencetree Limited | Baschurch | 1989 |
| Fenchurch Environmental Group Ltd | Lancaster | 1991 |
| Fencing Direct (UK) Limited | Sunderland | 2000 |
| Fendasox Limited | Gillingham | 2008 |
| Fenestratech Ltd | Richmond | 2011 |
| Fenestration Maintenance Ltd | Andover | 2024 |
| Feng & Co. Limited | London | 2010 |
| Feng Shui Property Management Ltd | Bournemouth | 2017 |