| Excelsior Apartments (Harrow) RTM Company Limited | Households | 2018 |
| Excelsior Mews Management Limited | Households | 1990 |
| Exiiitopsham (Management) Limited | Households | 2018 |
| Exlon Management Company Limited | Households | 1999 |
| Expat Wealth Asia Ltd | Professional & scientific | 2021 |
| Expedition Partners Limited | Other services | 2016 |
| Experience 55 Limited | Health & social care | 2005 |
| Explorers Eateries Ltd | Hospitality | 2023 |
| Eyenetpro Ltd | Information & communication | 2023 |
| Fairburn Court Residents Association Limited | Real estate | 1961 |
| Fairfax Green (Nantwich) Management Company Limited | Households | 2012 |
| Fairfax Mews Crediton Management Company Limited | Households | 2018 |
| Fairfield Road Management Limited | Households | 2008 |
| Fairlea Developments Limited | Construction | 1993 |
| Fairway and Maple Estate Management Limited | Households | 1965 |
| Fallow Fields (Twigworth) Management Company Limited | Households | 2020 |
| Farley Fields South Petherton Management Company Limited | Households | 2014 |
| Farm Gardens (Downend) Management Company Limited | Households | 2011 |
| Farndon Meadow Management Company Limited | Households | 2014 |
| Fast FIX Tools Limited | Wholesale & retail | 2006 |
| Fast Management Ltd | Professional & scientific | 2019 |
| Fcuktifino Limited | Professional & scientific | 2003 |
| Fellows Lane (Harborne) Management Company Limited | Households | 2007 |
| Fenny Compton (Warwickshire) Residents Management Company Limited | Households | 2017 |
| Fernbarton Ltd | Households | 2023 |
| Ferndene Farm Shop Limited | Wholesale & retail | 2012 |
| Ferndowne Management Company (Elvetham Heath) Limited | Households | 2005 |
| Fernhill Veterinary Clinic Limited | Professional & scientific | 2020 |
| Fernleigh Park (Long Marston) Management Company Limited | Households | 2021 |
| Ferris House Management Company Limited | Households | 2022 |
| Ferry Park (Plymouth) Management Company Limited | Households | 1996 |
| Fidus Construction Ltd | Construction | 2023 |
| Fidusestatesmanagement Limited | Real estate | 2022 |
| Fiduspropertymanagementlimited Limited | Real estate | 2022 |
| Field Court (Wimbledon) Limited | Households | 1997 |
| Finchley Road Residents Management Company Limited | Households | 2010 |
| Findon Court Management Limited | Households | 1987 |
| Finkle Mews Management Company Limited | Households | 1999 |
| Finlay Investments Limited | Construction | 2016 |
| Fireguard Services (NM) Limited | Manufacturing | 2008 |
| Firepits UK Ltd | Manufacturing | 2010 |
| First Choice Plumbing (Southern) Limited | Manufacturing | 2011 |
| First Class Bedrooms Limited | Manufacturing | 2002 |
| First Woodlea Place Management Company (Whiteley) Limited | Households | 1996 |
| Firstrate Management Ltd | Professional & scientific | 2019 |
| Five Star Nails PCK Ltd | Other services | 2021 |
| Fivestars Limited | Manufacturing | 2009 |
| Flamborough Close Management Company Limited | Households | 1988 |
| Fleet Court Management Limited | Households | 2004 |
| Florin Limited | Construction | 2016 |
| Flowerhill House RTM Company Limited | Households | 2010 |
| Flux Core Ltd | Wholesale & retail | 2024 |
| Flux Crafts Ltd | Manufacturing | 2020 |
| Fluxoid Ltd | Information & communication | 2015 |
| Foenix Homes Ltd | Real estate | 2024 |
| Foley Gardens (Newent) Residential Management Company Limited | Households | 2016 |
| Follaton Oak Management Company Limited | Households | 2015 |
| Follett Construction Limited | Construction | 2021 |
| Folly Grove (Hockley) Residents Management Company Limited | Households | 2016 |
| FOOD2GO New Milton Ltd | Hospitality | 2019 |
| Forces Life Cover Ltd | Financial services | 2021 |
| Ford Design and Construct Ltd | Construction | 2023 |
| Ford Roofing Ltd | Construction | 2020 |
| Forest Edge (Cuddington) Management Company Limited | Households | 2013 |
| Forest Environment Works Limited | Agriculture & fishing | 2025 |
| Forest Environmental Ltd | Agriculture & fishing | 2026 |
| Forest Glade Ice Cream Limited | Manufacturing | 2010 |
| Forest Grove (South Woodford) Management Limited | Households | 1994 |
| Forest Oak Builders Limited | Construction | 2013 |
| Forest Oak Developments Limited | Construction | 2017 |
| Forest Oak Properties Ltd | Real estate | 2025 |
| Forest Pines Properties (New Milton) Limited | Households | 1982 |
| Forest Ridge (Epping) Management Company Limited | Households | 2017 |
| Formula Race Engines Ltd | Professional & scientific | 2021 |
| Forsyte House RTM Company Limited | Households | 2007 |
| Foundry Parc Amenity Areas Management Company Limited | Households | 2007 |
| Foundry Place (Crawley) Management Company Limited | Households | 2013 |
| Four Oaks (Oxted) Management Company Limited | Households | 2015 |
| FOX Lane Management Company Limited | Households | 2005 |
| Foxhill (Bracknell) Residents Association Limited | Households | 1987 |
| Foxhill Crowthorne Road Limited | Households | 2019 |
| Foxlow Grange Berryfields Management Company Limited | Households | 2014 |
| Foxwood (Little Canfield) Management Company Limited | Households | 2015 |
| Framedean Management Limited | Real estate | 1988 |
| Frampton Steel Ltd | Manufacturing | 2023 |
| Freeform Dynamics Limited | Professional & scientific | 2005 |
| Freelands Court Residents Association Limited | Households | 1975 |
| Fremington Court (Management) Limited | Households | 1984 |
| French Furze Management Company Limited | Households | 2018 |
| Froghall Road (Flitwick) Management Limited | Households | 2015 |
| Froome to Grow Limited | Professional & scientific | 2024 |
| FTG Properties Ltd | Real estate | 2021 |
| Fugu Ltd | Professional & scientific | 2024 |
| Fulbeck Avenue (West Durrington) Management Company Limited | Households | 2015 |
| Fulbeck Avenue on the Lake Management Company Limited | Households | 2021 |
| Furley Meadows (Colchester) Management Company Limited | Households | 2018 |
| Fusion (Harlow) Management Company Limited | Real estate | 2015 |
| Futures Made Limited | Health & social care | 2024 |
| Fynza Finance Limited | Financial services | 2026 |
| G D Print Management Limited | Manufacturing | 2004 |