| Essiell Limited | Information & communication | 1985 |
| Esson Advisory Ltd | Professional & scientific | 2014 |
| Esus Advisory Ltd | Professional & scientific | 2022 |
| Ethang Consultancy Ltd | Information & communication | 2025 |
| Ethical 2023 Projects LLP | | 2023 |
| ETJ Limited | Wholesale & retail | 2022 |
| Euro-City Holdings Limited | Financial services | 2022 |
| European LM Ltd | Transport & logistics | 2025 |
| EV Electrics Limited | Wholesale & retail | 2026 |
| Evenform Ltd | Real estate | 2000 |
| Event Management Visionars Ltd | Hospitality | 2023 |
| Events Direct Limited | Arts & recreation | 2000 |
| Eversley Sports Association | Arts & recreation | 2003 |
| Evolution SFX Limited | Extraterritorial | 2019 |
| Evolution VFX Limited | Extraterritorial | 2016 |
| Evolvegtm Limited | Professional & scientific | 2024 |
| Evremond Estate Limited | Manufacturing | 2015 |
| Evremond Vineyards Limited | Manufacturing | 2018 |
| Excell Taxi Limited | Transport & logistics | 2025 |
| Excentric Performance Limited | Transport & logistics | 2025 |
| Executive Travel Ascot Limited | Transport & logistics | 2024 |
| Experthiring Ltd | Administrative & support | 2013 |
| Extreme Growth Limited | Manufacturing | 2020 |
| Eyethang Limited | Health & social care | 2011 |
| F.D.D. Corporation EOT Limited | Financial services | 2026 |
| F.D.D. International Limited | Wholesale & retail | 1992 |
| F1 Masters Limited | Administrative & support | 2007 |
| Faast Solutions Ltd | Information & communication | 2023 |
| Faber Interests Limited | Real estate | 2022 |
| Fairfax Road London Limited | Construction | 2022 |
| Fairoaks North East Ltd | Real estate | 2024 |
| Fairoaks South East Ltd | Real estate | 2025 |
| Fairway Fusion Limited | Professional & scientific | 2024 |
| Famscope Ltd | Professional & scientific | 2023 |
| Fantail Productions Limited | Information & communication | 2017 |
| Fantasy Ltd | Wholesale & retail | 2024 |
| Farmpass Ltd | Administrative & support | 2025 |
| Farnehurst Management Company Limited | Households | 2016 |
| Farthing Court RTA Limited | Households | 2022 |
| Fast Lane Finance Ltd | Financial services | 2026 |
| FBV Consulting Limited | Administrative & support | 2012 |
| Femorg.Com Limited | Professional & scientific | 2005 |
| Fena Investment & Distribution Ltd | Wholesale & retail | 2025 |
| Fenton Lane Funding II LLP | | 2022 |
| FERN2007 Properties Ltd | Real estate | 2025 |
| Ferrary Investments Ltd | Real estate | 2020 |
| FH Interiors Ltd | Professional & scientific | 2020 |
| Fianza Specialized Bonding Solutions UK Limited | Wholesale & retail | 2013 |
| Field House Consultants Limited | Professional & scientific | 2016 |
| Fields Investments Ltd | Professional & scientific | 2007 |
| Fields Property Group Limited | Real estate | 2020 |
| Fiesta City Limited | Extraterritorial | 2010 |
| Figo Stone Ltd | Construction | 2022 |
| File Smart UK Limited | Professional & scientific | 2026 |
| Film Production Logistics Ltd | Information & communication | 2016 |
| Finance House Solutions Limited | Professional & scientific | 2016 |
| Findyourdreamspace Ltd | Information & communication | 2026 |
| Finelineteach Limited | Education | 2018 |
| Finexus Partners Limited | Administrative & support | 2026 |
| Finnexo Dihya Trade Alliance Ltd | Construction | 2025 |
| Finocular Limited | Professional & scientific | 2019 |
| Fireaway Ascot Ltd | Hospitality | 2022 |
| Firlands Ascot Limited | Real estate | 1985 |
| First Kent Properties Limited | Construction | 2006 |
| First Light Electrical Services Ltd | Manufacturing | 2014 |
| First Tree Films Ltd | Information & communication | 2011 |
| Fitzies Holdings Incorporated Ltd | Financial services | 2022 |
| Five by Five Films Ltd | Information & communication | 2022 |
| Five M'S Consulting Limited | Professional & scientific | 2025 |
| Fixed Income Software Limited | Information & communication | 2014 |
| Flag Homes Limited | Construction | 2011 |
| Flawless Events and Promotions Ltd | Professional & scientific | 2007 |
| Flawless Faces & Skin Ltd | Other services | 2024 |
| Flexirink Ltd | Other services | 2024 |
| Flexitent Limited | Administrative & support | 2017 |
| Florence by Mills Limited | Wholesale & retail | 2025 |
| Flow Control Systems Ltd | Administrative & support | 2009 |
| Flowzone Ltd | Information & communication | 2009 |
| FMD Marketing Consultancy Limited | Professional & scientific | 2003 |
| Focus City Limited | Extraterritorial | 2010 |
| Folc.Life Ltd | Wholesale & retail | 2021 |
| Folkestone Harbour Property Ltd | Real estate | 2021 |
| Footdry Designs Limited | Professional & scientific | 2020 |
| FOR Keeps Flowers Limited | Arts & recreation | 2018 |
| FOR10 Ltd | Wholesale & retail | 2018 |
| FOR4SONS Ltd | Information & communication | 2014 |
| FOR4SONS Property Investments Ltd | Real estate | 2025 |
| FOR4SONS Services Ltd | Other services | 2017 |
| Fora Live Ltd | Arts & recreation | 2023 |
| Foreperformance Ltd | Other services | 2025 |
| Forest Gate Architecture & Design Limited | Professional & scientific | 2024 |
| Foresters (Ascot) Residents Association Limited | Hospitality | 1989 |
| Forge Mill Homes Ltd | Construction | 2016 |
| Forlon Dental Surgeries Limited | Health & social care | 1950 |
| Form (Developments) Limited | Real estate | 1960 |
| Form Investments Limited | Real estate | 1964 |
| Forman Investment Holdings Limited | Financial services | 2023 |
| Formula Tree Limited | Agriculture & fishing | 2025 |
| Forte Training Company Ltd | Education | 2018 |
| Fortis Property Solutions Limited | Administrative & support | 2024 |