| Ethos Skin and Laser Ltd | Other services | 2021 |
| Etree Planting Limited | Professional & scientific | 2007 |
| Etree Surgery Limited | Professional & scientific | 2008 |
| Ettinger Limited | Administrative & support | 2022 |
| EUR Projects Ltd | Professional & scientific | 2025 |
| Euro Shipping Limited | Transport & logistics | 1994 |
| Eurocreative Ltd | Construction | 2015 |
| European SAP Resources Limited | Information & communication | 2007 |
| Eutemia Performance Management Ltd | Professional & scientific | 2017 |
| EV Academic Engagements Ltd | Education | 2013 |
| EVA STP Consulting Limited | Information & communication | 2011 |
| Evanston Ridge Consultants Limited | Professional & scientific | 2013 |
| Evenholme Projects Ltd | Professional & scientific | 2014 |
| Evenstar Consulting Limited | Professional & scientific | 2025 |
| Evolve Code Limited | Information & communication | 2014 |
| Evotalents Team Limited | Administrative & support | 2022 |
| EWI Renderstore Limited | Wholesale & retail | 2020 |
| EX Novo Holdings (UK) Limited | Manufacturing | 2013 |
| Exap Ltd | Financial services | 2010 |
| Exelby Management Limited | Administrative & support | 2015 |
| Express Vehicle Movements (Heathrow) Limited | Transport & logistics | 2015 |
| Eyes on US Ltd | Professional & scientific | 2024 |
| Eyrie Design Ltd. | Professional & scientific | 2016 |
| Facing Pages Limited | Information & communication | 2002 |
| Fairfax Place Management Company Limited | Households | 1996 |
| Fairheathe Residents' Association Limited | Households | 1964 |
| Fairmead Court (Richmond) RTM Company Limited | Real estate | 2020 |
| Fairway Moves Limited | Transport & logistics | 2004 |
| Fairymile Ltd | Households | 1998 |
| Fallow Court Residents Company Limited | Households | 1989 |
| Fallridge Properties Limited | Financial services | 2019 |
| Fantastic Ideas Limited | Administrative & support | 2008 |
| Fanwood Limited | Professional & scientific | 2002 |
| Fara Enterprises Limited | Wholesale & retail | 1992 |
| Fara Foundation | Other services | 2010 |
| Faradeum Limited | Information & communication | 2025 |
| Farnsworth Medical Ltd | Health & social care | 2022 |
| Fashion Beauty Teddington Ltd | Other services | 2023 |
| Fashion Nails (Teddington) Limited | Other services | 2016 |
| Fast Paced Diagnostics Ltd | Health & social care | 2020 |
| FAT Slam Media Limited | Information & communication | 2014 |
| FDE Properties Ltd | Real estate | 2015 |
| Feather House Consulting Limited | Professional & scientific | 2024 |
| Febris Limited | Information & communication | 2019 |
| Feliadiedo INT. Ltd | Information & communication | 2025 |
| Feltham Riverside LLP | | 2018 |
| Feltpark Ltd | Professional & scientific | 2021 |
| Fidere Consultancy Limited | Professional & scientific | 2010 |
| Fides GF Consulting Limited | Administrative & support | 2013 |
| Fifi Ltd | Real estate | 2025 |
| Filthy Gorgeous Productions Ltd | Information & communication | 2024 |
| Fine Finish Installations Ltd | Construction | 2024 |
| Finemile Limited | Professional & scientific | 1983 |
| Finn Media Ltd | Information & communication | 2012 |
| Fire and Feasts Ltd | Hospitality | 2022 |
| Firmfield Limited | Professional & scientific | 1985 |
| First Chillerton Residents Association (Hampton) Limited | Real estate | 1981 |
| First Choice Movers Limited | Transport & logistics | 2020 |
| Fish Bar None Limited | Hospitality | 2025 |
| Fit OUT Finances Ltd | Professional & scientific | 2017 |
| Five Leaves Left Limited | Information & communication | 2004 |
| Flameboy Investments Ltd | Real estate | 2022 |
| Flight 360 Training Ltd | Administrative & support | 2023 |
| Flint and Ford Ltd | Wholesale & retail | 2013 |
| Fliptech Ltd | Professional & scientific | 2023 |
| Flogro Consulting Limited | Administrative & support | 2021 |
| Flooring 4 Lets Limited | Construction | 2025 |
| Florence and Hamburg Limited | Real estate | 2015 |
| Flow Space Ltd | Real estate | 2020 |
| Flying Cloud Cafe Limited | Hospitality | 2011 |
| Focused Leaders Group Ltd | Information & communication | 2021 |
| Followshot Ltd | Information & communication | 2014 |
| Food Labels Limited | Hospitality | 2022 |
| Footy Fitness CIC | Education | 2025 |
| Foran CT Limited | Arts & recreation | 2025 |
| Fork Handles Grounds Maintenance Ltd | Administrative & support | 2015 |
| Form Bathrooms Ltd | Administrative & support | 2007 |
| Fort Wayne Leisure Limited | Wholesale & retail | 2025 |
| Forte Solutions Ltd | Professional & scientific | 2020 |
| Fortune's CAP Productions Ltd | Arts & recreation | 2022 |
| Fortuny London Limited | Wholesale & retail | 2009 |
| Forum House (ST Albans) Freehold Ltd | Households | 2025 |
| Found Property London Ltd | Real estate | 2020 |
| Foundry Fitness Limited | Arts & recreation | 2006 |
| Four TPR Limited | Households | 2025 |
| Four Walls Fitness Limited | Arts & recreation | 2016 |
| Fox's Searches Ltd | Real estate | 2024 |
| FPG Financial Services LLP | | 2015 |
| FPG Mortgages Ltd | Financial services | 2022 |
| Frank Harris and Company Limited | Extraterritorial | 2008 |
| FREE2AIR Limited | Information & communication | 2002 |
| Freedom Snowsports Ltd | Education | 2017 |
| Freespeed Ltd | Arts & recreation | 2008 |
| Freeze-Frame Partnership Limited | Information & communication | 1998 |
| Fresh Air Training Limited | Professional & scientific | 2017 |
| Fresh Fare 2023 Ltd | Hospitality | 2023 |
| Fridgepoint Ltd | Manufacturing | 2010 |
| Front ROW Marketing Ltd | Professional & scientific | 2020 |
| Frontier Alpha Limited | Administrative & support | 2008 |
| FTM Solutions Ltd | Professional & scientific | 2025 |