| Foot in the East Limited | Crymych | 2003 |
| Foot Shack Ltd | London | 2024 |
| Footbalingo Ltd | Manchester | 2025 |
| Football Academy Kwiatkowscy Ltd. | Manchester | 2025 |
| Football Belts Limited | Eastbourne | 2020 |
| Football Facilities Management Limited | Harrogate | 2015 |
| Football FM Limited | Harrogate | 2015 |
| Football on Trent Ltd | Newcastle | 2025 |
| Football Pro Limited | Caldecote | 2001 |
| Footballer Millionaires Ltd | Winchmore Hill | 2010 |
| Footballers Facilities Management Limited | Harrogate | 2015 |
| Footfall Verification Limited | Boroughbridge | 2009 |
| Footgolf Holding Ltd | London | 2024 |
| Footgolf Ltd | London | 2023 |
| Footie Tots Limited | Epsom | 2001 |
| Footjoy Limited | East Grinstead | 2010 |
| Footless Crow Limited | Moulton Park | 2016 |
| Footloose and Fancy Free Limited | Oxford | 1991 |
| Footman Tudor-Lewis Limited | Harrogate | 2025 |
| Footman-Walker Associates Limited | Leeds | 1985 |
| Footsteps Tours Limited | Northampton | 2021 |
| Footy MAD Limited | Brentwood | 2009 |
| Fopa Limited | London | 1977 |
| Fope Lendore Lewis Limited | London | 2012 |
| FOR 4 Kids Management Limited | London | 2013 |
| FOR Cooks Sake Ltd | Coniston | 2021 |
| FOR Food Limited | Bargoed | 2014 |
| FOR Good Limited | Thatcham | 2006 |
| FOR Q (UK) Limited | Wakefield | 2010 |
| FOR Raire Ltd | London | 2025 |
| FOR Sale Visit Www.Buythiscompanyname.Co.Uk Ltd | Newmarket | 2025 |
| FOR Security Services Limited | London | 2024 |
| FOR Soouq Ltd | Bristol | 2025 |
| FOR the Bride Publishing Limited | Witham | 1999 |
| FOR the Love of MUD Ltd | Witney | 2014 |
| FOR the Purpose Ltd | London | 2017 |
| FOR the Rebels Ltd | London | 2024 |
| FOR Your Eyes Only Limited | Hamble Le Rice | 2019 |
| Foramaflow Marine Limited | Windlesham | 1977 |
| Foran Land Limited | Sittingbourne | 2013 |
| Forban Import/Export Ltd | London | 2007 |
| Forbes Burton Ventures Limited | Grimsby | 2017 |
| Forbes Construction Limited | London | 2014 |
| Forbes Ff&E Limited | Leominster | 2008 |
| Forbes FM Limited | Harrogate | 2026 |
| Forbes Nannies Ltd | London | 2023 |
| Forbes Private Staff Ltd | London | 2016 |
| Forbidden Colours Limited | London | 2016 |
| Forbidden Planet Earth Limited | Stafford | 2024 |
| Forblast Limited | Aberlour | 1988 |
| Forburg Investments Limited | Edgware | 2016 |
| Forbury Homes Limited | Tadley | 2018 |
| Forcada Ltd | Henley-On-Thames | 2013 |
| Force Majeure Limited | Watford | 2010 |
| Force Protection Limited | London | 1999 |
| Force Structures Limited | London | 2009 |
| Forces in Mind Limited | Salisbury | 2014 |
| Ford & Slater Group Limited | Wootton | 1965 |
| Ford Dental Laboratories Limited | Bartley | 2005 |
| Ford Ennals Funeral Services Limited | Sutton Coldfield | 1977 |
| Ford Read Consultancy Ltd | Milton Keynes | 2021 |
| Ford Street Wigmore Limited | Tenbury Wells | 2024 |
| Ford Waste Recycling Solutions Ltd | Eastbourne | 2018 |
| Fordam Investments Limited | | 1986 |
| Fordams (Fordingbridge) Limited | Northam, Southampton | 1982 |
| Fordash GR NO1 Limited | London | 2021 |
| Fordash GR NO2 Limited | London | 2021 |
| Fordash GR NO3 Limited | London | 2021 |
| Fordash GR NO4 Limited | London | 2021 |
| Fordash GR NO5 Limited | London | 2021 |
| Fordbridge Road Management Company Limited | Ashford | 1969 |
| Fordburn Limited | Bridgend | 2026 |
| Fordhouse Limited | Brierley Hill | 2015 |
| Fordhouse Nominees Limited | London | 2026 |
| Fordmark Limited | Bridgend | 2026 |
| Fordmere Limited | Bridgend | 2021 |
| Fordrise Limited | Bridgend | 2022 |
| Fordson Ltd | Durham | 2024 |
| Fordthorne Limited | Cardiff | 1947 |
| Fore Golf Discount (Chester) Limited | Llanrwst | 1998 |
| Fore Systems Ltd | Liskeard | 2005 |
| Fore.Sight Golf Ltd | Haywards Heath | 2025 |
| Forefront Energy Solutions Ltd | Burgess Hill | 2014 |
| Forefront Timber Frames Ltd | Rickinghall, Diss | 2023 |
| Forefuture Energy Ltd | Bridlington | 2025 |
| Forefuture Investments Ltd | Bridlington | 2025 |
| Foreign Emperors Ltd | Birmingham | 2025 |
| Foreman & Hanna Limited | Bristol | 2011 |
| Foreman Enterprises Limited | Dartford | 2008 |
| Foreman MJ Limited | Chelmsford | 2019 |
| Foremost Markets Ltd | London | 2015 |
| Forense Ltd | Gateshead | 2003 |
| Forensic Computing Limited | Chislehurst | 2003 |
| Forensic Toxicology Specialists Ltd | Northwich | 2020 |
| Forerunner Fitness Limited | Doncaster | 2024 |
| Foresee Group Ltd | Birmingham | 2017 |
| Foresee Innovations Ltd | Coventry | 2017 |
| Foresee Limited | London | 2007 |
| Foresee POP UK Ltd | Beckenham | 2022 |
| Foresee Solutions Limited | London | 2007 |