| Evolution Energy Minerals UK Limited | Mining & quarrying | 2016 |
| Evolving Mindscape Ltd | Professional & scientific | 2024 |
| Evontez Limited | Professional & scientific | 2019 |
| Evthokia Limited | Administrative & support | 2007 |
| EWP Electrical Limited | Construction | 2015 |
| EX WHY ZED Limited | Professional & scientific | 2012 |
| Exaar Limited | Professional & scientific | 2009 |
| Exaro Limited | Professional & scientific | 2017 |
| Excel & Optimise Ltd | Professional & scientific | 2022 |
| Excel Healthcare Provider Ltd | Health & social care | 2021 |
| Excel Technologies Limited | Information & communication | 2011 |
| Excel Trade Solutions Ltd | Construction | 2025 |
| Excellarate Works Ltd | Administrative & support | 2025 |
| Exeter Trade Ltd | Professional & scientific | 2024 |
| Expedia Trading Limited | Real estate | 2006 |
| Expert Graphic International Limited | Information & communication | 2025 |
| Experts Solution Gadgets Ltd | Other services | 2025 |
| Exploration Mining Investment UK Limited | Financial services | 2025 |
| Expocerts Limited | Wholesale & retail | 2013 |
| Export & General Insurance Services Limited | Financial services | 1983 |
| Extra Time Development Ltd | Arts & recreation | 2022 |
| EYE of the Wind Ltd | Administrative & support | 2012 |
| Eyecare Kingston Ltd | Wholesale & retail | 2023 |
| F.T. Bristow & Co. Limited | Administrative & support | 2001 |
| FA Aesthetics Ltd | Other services | 2018 |
| Fabb Ltd | Information & communication | 2018 |
| Face Pharmaceutical Ltd | Wholesale & retail | 2026 |
| Factory AS Fakk Limited | Wholesale & retail | 2020 |
| Fade to Grey Ltd | Arts & recreation | 2018 |
| Fadinco Limited | Professional & scientific | 2025 |
| FAI DA TE Productions Limited | Wholesale & retail | 2024 |
| Fair Nest Properties Limited | Real estate | 2020 |
| Fair Property Services Ltd | Construction | 2024 |
| Fairdew of London Limited | Wholesale & retail | 2005 |
| Fairfield South (Kingston) Management Company Limited | Households | 1972 |
| Fairfield South Management Co Limited | Households | 2007 |
| Fairhaven Care Home Limited | Health & social care | 2003 |
| Fairhaven Care Ltd | Real estate | 2015 |
| Fairlawn (Kingston-Upon-Thames) Management Company Limited | Households | 2014 |
| Fairlea Online Ltd | Administrative & support | 2012 |
| Fairlight 4 Church Grove Limited | Households | 2021 |
| Fairlight Studios Ltd | Information & communication | 2016 |
| Fairways Estates Limited | Households | 1998 |
| Fairwinds Traders Ltd | Financial services | 2023 |
| Faith Recruitment Limited | Administrative & support | 2004 |
| Falconi Limited | Information & communication | 2017 |
| Falconwood Solutions Ltd | Construction | 2024 |
| Falling Apples Limited | Professional & scientific | 1999 |
| Family AI Ltd | Health & social care | 2024 |
| Family Business Governance LLP | | 2012 |
| Family Office Analytics Ltd | Information & communication | 2000 |
| Fams Lifestyle Limited | Professional & scientific | 2018 |
| Fanscia Properties Limited | Real estate | 2020 |
| Fareham Point Estate Ltd | Real estate | 2023 |
| Farfa Engineering Limited | Professional & scientific | 2005 |
| Farha Sufian Consultancy Ltd | Professional & scientific | 2024 |
| Farley & Partners Consulting Services Limited | Professional & scientific | 2010 |
| Farthings (Kingston Hill) Residents Association Limited(The) | Real estate | 1979 |
| Fashion Heaven International Limited | Administrative & support | 2009 |
| FAT Bloke Productions Limited | Professional & scientific | 1996 |
| FAT Cactus Limited | Information & communication | 2019 |
| Fatboy Electric Bikes Ltd | Wholesale & retail | 2025 |
| Fatedapp Limited | Information & communication | 2024 |
| Fauxx Enterprise Ltd | Wholesale & retail | 2024 |
| Fcg-Uk | Health & social care | 2026 |
| FCR Developments Limited | Construction | 2017 |
| FE26 Limited | Financial services | 2022 |
| February 54 Properties Limited | Real estate | 2023 |
| Federico Sambiase Limited | Wholesale & retail | 2010 |
| Feldys CIC | Education | 2026 |
| Felisha Films UK Limited | Information & communication | 2019 |
| Feltimo Limited | Professional & scientific | 2011 |
| Fema (UK) Limited | Professional & scientific | 2011 |
| Female Pilot Club Ltd | Information & communication | 2022 |
| Fenix Architects Ltd | Professional & scientific | 2025 |
| Fents 7 Ltd | Wholesale & retail | 2025 |
| Fern Consulting Services Ltd | Professional & scientific | 2020 |
| Fernbark Gardencare Ltd | Construction | 2008 |
| Fernhill Court Management Limited | Households | 2003 |
| Ferrari Express Ltd | Transport & logistics | 2006 |
| Ferrier Estates Ltd | Real estate | 2024 |
| Ferryman Films Ltd | Information & communication | 2010 |
| Ffcademy Ltd | Professional & scientific | 2022 |
| FG Kelly Limited | Wholesale & retail | 2023 |
| FGL Group Ltd | Professional & scientific | 2021 |
| FGL Marine Services Ltd | Manufacturing | 2021 |
| Fielding Properties Limited | Construction | 1991 |
| FIG and Rosemary Ltd | Agriculture & fishing | 2024 |
| FIG Tree Properties Limited | Real estate | 2014 |
| Fight Path Ltd | Administrative & support | 2025 |
| Fika Co Business Ltd | Construction | 2024 |
| Filgroup Ltd | Real estate | 1998 |
| Filix Lighting Limited | Manufacturing | 2021 |
| Film Financing Limited | Administrative & support | 2004 |
| Film Plus Ltd | Administrative & support | 2025 |
| Finally the Day Ltd | Information & communication | 2009 |
| Financial Credit Solutions Limited | Financial services | 2019 |
| Finankko Limited | Administrative & support | 2023 |
| Finbrothers & Co. Ltd | Information & communication | 2024 |
| Finding Shores Ltd | Professional & scientific | 2021 |