| Expressions Limited | Extraterritorial | 1995 |
| Exquisite London Limited | Wholesale & retail | 2023 |
| Eyecatching Signs Ltd | Other services | 2007 |
| EZ Consulting and Management Ltd | Construction | 2025 |
| Ezekiel Construction Limited | Construction | 2025 |
| F V Pigs Limited | Agriculture & fishing | 2013 |
| F&Ama Ltd | Wholesale & retail | 2025 |
| F&H Engineering Services Ltd | Professional & scientific | 2021 |
| F'Eight Productions Ltd | Information & communication | 2021 |
| F-N Coffee Supreme Ltd | Hospitality | 2011 |
| F2-ADVISORY Ltd | Wholesale & retail | 2021 |
| FAB Homes Ltd. | Real estate | 2016 |
| Fabienne S Limited | Other services | 2010 |
| Fabyc House Limited | Households | 1996 |
| Facade (Sales) Limited | Wholesale & retail | 2018 |
| Faceless London Ltd | Professional & scientific | 2023 |
| Facesculptstudios Ltd | Other services | 2026 |
| Fact Administration LLP | | 2015 |
| Fairacres (Richmond) Limited | Households | 2009 |
| Faircloth and Egan Limited | Health & social care | 2013 |
| Fairlawn Court Chiswick Limited | Households | 2003 |
| Fairmont EYE Group Ltd | Wholesale & retail | 2023 |
| Fairmont Property Experts Ltd | Real estate | 2023 |
| Fajemibola TM Ltd | Construction | 2024 |
| Falco TEC Niko Solution Limited | Construction | 2025 |
| Falling Edge Technology Ltd | Professional & scientific | 2024 |
| Fanlegotastic Ltd | Wholesale & retail | 2025 |
| Fantasia Labs London Limited | Professional & scientific | 2026 |
| FAR & Wide Aviation Limited | Transport & logistics | 2003 |
| FAR & Wide Developments Ltd | Construction | 2017 |
| FAR & Wide Limited | Administrative & support | 2002 |
| Faraday Property Management Limited | Real estate | 2006 |
| Fariba Soltani Ltd | Wholesale & retail | 2015 |
| Faringdon Business Centre Ltd | Real estate | 2023 |
| Farm Fresh (Europe) Limited | Wholesale & retail | 2008 |
| Farm-A-Round Limited | Wholesale & retail | 1995 |
| Farnaby Landscapes Limited | Extraterritorial | 1998 |
| Farnaby Limited | Extraterritorial | 2003 |
| Farnaby Turf Limited | Extraterritorial | 1998 |
| Farooq TM Ltd | Construction | 2023 |
| FAS Real Estate Development Company Ltd | Real estate | 2016 |
| Fashionista Food Limited | Professional & scientific | 2020 |
| Fashionizer Limited | Manufacturing | 2000 |
| Fashionizer Spa Limited | Manufacturing | 2009 |
| Fast Frameworks Limited | Information & communication | 2024 |
| Fast Track IT Solutions Ltd | Wholesale & retail | 2025 |
| Fast Track Media Ltd | Administrative & support | 2025 |
| FAT Fire Ltd | Information & communication | 2024 |
| FAT Kyds Ltd | Manufacturing | 2009 |
| FAT RAT Films Ltd | Information & communication | 2013 |
| Fatso Brands Limited | Manufacturing | 2021 |
| Fatso Chocs Ltd | Manufacturing | 2020 |
| FCP AIS Limited | Administrative & support | 2022 |
| FCS600 Limited | Hospitality | 2005 |
| FCS700 Limited | Hospitality | 2023 |
| FDG UK Trade Ltd | Wholesale & retail | 2025 |
| FDS International Payment System Consultants Limited | Other services | 2015 |
| FEA Consulting Ltd | Professional & scientific | 2019 |
| Featherstone Leigh Commercial Ltd | Real estate | 2025 |
| Feel Good Beauty Ltd | Real estate | 2025 |
| Feepo Ltd | Education | 2021 |
| Feetham Farm Limited | Agriculture & fishing | 2020 |
| Fegoo Limited | Manufacturing | 2018 |
| Feisty Ltd | Other services | 2014 |
| Felix Telecom Limited | Administrative & support | 2009 |
| Felton Pumphrey Limited | Professional & scientific | 2007 |
| Feltons Richmond Limited | Professional & scientific | 2020 |
| Fenestratech Ltd | Extraterritorial | 2011 |
| Fergus Network Ltd | Information & communication | 2021 |
| Fermr Holdings Limited | Financial services | 2022 |
| Ferna Limited | Extraterritorial | 2017 |
| Ferndown (Surbiton) Residents Association Limited | Households | 1979 |
| Ferry Quays Block 1 Flat Management Company Limited | Households | 2001 |
| Ferula Investments Ltd | Financial services | 2020 |
| FEV Finance Holdings Limited | Financial services | 2023 |
| FEV Finance Ltd | Financial services | 2019 |
| FF Media Productions Ltd. | Information & communication | 2017 |
| FFT Holdings Limited | Financial services | 2017 |
| FG Services LLP | | 2008 |
| FGFR2 Ltd | Professional & scientific | 2025 |
| Field Capital Limited | Other services | 2019 |
| Fieldchart Limited | Real estate | 2001 |
| Fieldwork Solutions Ltd | Agriculture & fishing | 2024 |
| Filoxenia Limited | Agriculture & fishing | 2017 |
| Filtermate Productions Ltd | Wholesale & retail | 2019 |
| Filtr Sports Ltd | Arts & recreation | 2021 |
| Finance & Strategy Ltd | Professional & scientific | 2015 |
| Financial Partnership Limited | Financial services | 2014 |
| Financial Systems Associates Limited | Administrative & support | 2000 |
| Finex Advisory Limited | Professional & scientific | 2025 |
| Fingerpress Ltd | Information & communication | 2010 |
| Finlab Consulting Limited | Construction | 2016 |
| Finlay Brewer (Askew) Limited | Real estate | 2012 |
| Finlay Brewer International Limited | Real estate | 2014 |
| Finlay Brewer Lettings Limited | Real estate | 2014 |
| Finlay Brewer Limited | Real estate | 1992 |
| Fintecy Ltd | Information & communication | 2020 |
| Fintelligent Ltd | Information & communication | 2024 |
| Finteq Group Limited | Financial services | 2019 |
| Fiona Black Hair Limited | Other services | 2023 |