| Expedite Detective Agency Limited | Administrative & support | 2013 |
| Experium Events Ltd | Professional & scientific | 2020 |
| Exploding PEN Limited | Information & communication | 2001 |
| Expo City Retail Limited | Wholesale & retail | 2024 |
| Expofx Ltd | Manufacturing | 1996 |
| Extra Mile Limited | Professional & scientific | 2005 |
| EYE Consult Limited | Real estate | 1993 |
| EZ Business Solutions Ltd | Professional & scientific | 2006 |
| Ezenze Limited | Administrative & support | 2005 |
| F. B. Coachworks Limited | Wholesale & retail | 1977 |
| F.A. Clover & SON Limited | Construction | 1993 |
| F.G.Avery Limited | Wholesale & retail | 1971 |
| F.J.M. Associates Limited | Extraterritorial | 1927 |
| F.P.M. Consultants Limited | Information & communication | 1999 |
| FA Properties Limited | Real estate | 2017 |
| FAB Nails & Beauty Ltd | Other services | 2019 |
| Fabclean Limited | Other services | 2000 |
| Facade Limited | Wholesale & retail | 1985 |
| Faccini House Limited | Health & social care | 2006 |
| Face 2 Face Financial Ltd | Financial services | 2001 |
| Face Junkie Ltd | Wholesale & retail | 2019 |
| Face Therapy (London) Limited | Other services | 2008 |
| Fahey Roofing Limited | Construction | 1999 |
| Fahy Consultancy Limited | Information & communication | 2002 |
| Fair Acres Management Limited | Construction | 1987 |
| Fair Business Forms Limited | Administrative & support | 1997 |
| Fairfield Park Management Company Limited | Households | 1992 |
| Fairway Independent Financial Advisers Limited | Financial services | 2000 |
| Faisal World Ltd | Wholesale & retail | 2025 |
| Fait DE Coton Ltd | Wholesale & retail | 2024 |
| Fajar Ltd | Professional & scientific | 2019 |
| Falco Limited | Information & communication | 1995 |
| Falcon Couriers and Logistics Ltd | Transport & logistics | 2023 |
| Falcon Force Enterprises | | 2004 |
| Falgar Insulation Co. Limited | | 1982 |
| FAM Estates & Investment Ltd | Real estate | 2024 |
| Faran Aqeel Trader Ltd | Transport & logistics | 2022 |
| Farm Fencing Contracts Limited | Wholesale & retail | 2007 |
| Farnashot Limited | Other services | 1955 |
| Farnborough Construction Company Limited | | 1960 |
| Farnham Marble Limited | Wholesale & retail | 1991 |
| Farnham Masonic Hall Company Limited | Other services | 1947 |
| Farnhurst Limited | Professional & scientific | 2008 |
| Farrer Designs Limited | Manufacturing | 1981 |
| Farriers Equipment Limited | Wholesale & retail | 1983 |
| Fast Track Care Services Ltd | Health & social care | 2011 |
| Fasttrax Holdings Limited | Financial services | 2001 |
| Fatcoi Limited | Wholesale & retail | 2021 |
| Faulkner Consultants Limited | Professional & scientific | 2015 |
| Fawnrye Limited | Professional & scientific | 1972 |
| FCX Flow Control Limited | Extraterritorial | 1995 |
| FDW360 Ltd | Health & social care | 2025 |
| Featherstone Capital Ltd | Financial services | 2016 |
| Feel Good Studio Limited | Other services | 2006 |
| Fellmere Limited | | 1970 |
| Felstar Limited | Information & communication | 1999 |
| Fencott Limited | Households | 1987 |
| Fendec Limited | | 1982 |
| Fenton Taylor Limited | Real estate | 2008 |
| Fern Investments Limited | Financial services | 1969 |
| Ferndale Court Estates Limited | Real estate | 2014 |
| Ferndown Homes Limited | Real estate | 2000 |
| Fernlea Road Management Company (London) Limited | Extraterritorial | 2005 |
| Fernmont Enterprises Limited | Professional & scientific | 1997 |
| Ferrari Limited | Professional & scientific | 2004 |
| Feton Properties Limited | Real estate | 2006 |
| FGS Media Limited | Education | 2002 |
| Fiabalondon Ltd | Wholesale & retail | 2025 |
| Field Oaks Insurance Services Limited | Financial services | 1964 |
| Fielding Investments Ltd | Real estate | 2012 |
| Fifetech Limited | Professional & scientific | 2006 |
| Fifteen (Albion Road) Management Limited | Households | 2005 |
| Fifty Seven Formation Limited | Construction | 2022 |
| Fifty Two Kings Road (Richmond) Limited | Households | 1981 |
| Filesave Limited | Professional & scientific | 1997 |
| Fill Your Boots Location Catering Limited | Hospitality | 2006 |
| Film Aviation Services Limited | Professional & scientific | 1995 |
| Filman Enterprises Limited | Other services | 2003 |
| Filmsmith Limited | Information & communication | 1982 |
| Financial Consultants and Management Limited | Professional & scientific | 2005 |
| Financial Modeller Ltd | Information & communication | 1999 |
| Financial Profiles Limited | Financial services | 2005 |
| Financial Services Regulation Ltd | Professional & scientific | 1998 |
| Financial-Connection Limited | Financial services | 2001 |
| Fincepta Consultancy Limited | Professional & scientific | 2007 |
| Finch Hatton Limited | Extraterritorial | 2006 |
| Finder Group Limited | Professional & scientific | 1998 |
| Findyourlet Limited | Real estate | 2007 |
| Fine CUT Interior Designs Limited | Construction | 2019 |
| Fine Lite (Electrics) Limited | Information & communication | 1999 |
| Finexe Systems Limited | Information & communication | 1992 |
| Fingar Electronics Limited | Manufacturing | 2003 |
| Finger Foods Ltd | Manufacturing | 2002 |
| Finite Energy Limited | Administrative & support | 2004 |
| Finlog (U.K.) Limited | | 1989 |
| Fintery Ltd | Information & communication | 2024 |
| Finwell Limited | Professional & scientific | 1999 |
| Fire Suppression Technology Limited | Wholesale & retail | 2002 |
| Firefly Video Services Limited | Wholesale & retail | 2002 |
| Firm Q Limited | Professional & scientific | 2006 |