| Envirocapital Limited | Professional & scientific | 2004 |
| EO Insight Limited | Professional & scientific | 2013 |
| EP Limited | Extraterritorial | 2007 |
| Epanouie Limited | Administrative & support | 2016 |
| EPD Sales Limited | Wholesale & retail | 2024 |
| Equalis Legal Services Limited | Professional & scientific | 2021 |
| Equalis Technology Ltd | Information & communication | 2019 |
| Equiano Global Ltd | Administrative & support | 2025 |
| ER Limited | Extraterritorial | 2007 |
| ERS Structural Engineering Limited | Professional & scientific | 2025 |
| Essential Function Limited | Other services | 2017 |
| Essenwood Partners Limited | Financial services | 2026 |
| Essex Great Yeldham Ltd | Hospitality | 2025 |
| Essex County Freehouses Ltd | Hospitality | 2019 |
| Essex County Inns Limited | Professional & scientific | 2019 |
| Essex Pyrotechnics Limited | Manufacturing | 1992 |
| European Distribution Solutions Limited | Wholesale & retail | 2002 |
| European EMC Products Limited | Manufacturing | 1996 |
| EVA Antiques Ltd | Wholesale & retail | 2019 |
| Evancoyd Ltd | Administrative & support | 2023 |
| Evancoyd Properties Limited | Financial services | 2026 |
| Evanridge Corporate Management LLP | | 2009 |
| Evans Communication Services Ltd | Construction | 2019 |
| Evans Educational Consultants Ltd | Professional & scientific | 2018 |
| Evedon Estates Limited | Real estate | 2021 |
| Event Collective Ltd | Professional & scientific | 2022 |
| Event-Cad Ltd | Professional & scientific | 2026 |
| Events and Publishing Limited | Information & communication | 2008 |
| Everard Cole Limited | Real estate | 2009 |
| Evercrate Ltd | Wholesale & retail | 2026 |
| Evergreen Consulting Limited | Professional & scientific | 2022 |
| Evergrow Investments Limited | Real estate | 2020 |
| Evergrow Property Limited | Real estate | 2019 |
| Everharmonys LLP | | 2024 |
| Everlast Plumbing Solutions Ltd | Construction | 2025 |
| Evfix Limited | Energy | 2017 |
| Evolution Insurance Solutions Limited | Financial services | 2007 |
| Evolution Securities China Limited | Professional & scientific | 2003 |
| Ewan Treadgold Ltd | Construction | 2023 |
| Exaltus Ltd | Administrative & support | 2024 |
| Excelerate Partners Ltd | Administrative & support | 2015 |
| Excelero Tech UK Ltd | Administrative & support | 2022 |
| Excelsior Fireworks Limited | Manufacturing | 1997 |
| Excelsior Kitchens Limited | Wholesale & retail | 2001 |
| Exception Capital LLP | | 2007 |
| Exceptional Home Care Ltd | Health & social care | 2018 |
| Excil Electronics Limited | Manufacturing | 1982 |
| Exclusify Deals Ltd | Professional & scientific | 2025 |
| Exen Capital Advisors Ltd | Administrative & support | 2019 |
| Exercise Ltd | Arts & recreation | 2025 |
| Exmoor Garden Services Limited | Administrative & support | 2025 |
| Exmoor Tree Services Limited | Administrative & support | 2026 |
| Express UK Services Limited | Real estate | 1994 |
| Extra Space Self Storage Limited | Real estate | 2025 |
| EY Limited | Extraterritorial | 2020 |
| EY Provider LLP | | 2024 |
| F & R Valeting Limited | Administrative & support | 2015 |
| F J Zelley Holdings Limited | Professional & scientific | 2013 |
| F Marlow Fencing & Landscapes Ltd | Administrative & support | 2025 |
| F-Tech Aerospace Limited | Manufacturing | 2018 |
| F.W.& H.S.Goddard Limited | Agriculture & fishing | 1938 |
| F.W.Goddard Limited | Real estate | 1938 |
| Fabio Galle Limited | Construction | 2025 |
| Fabled Lands LLP | | 2005 |
| Facilitate Fire Safety Limited | Public administration | 2022 |
| Facilitate Spaces Limited | Construction | 2008 |
| Fade & Blade Saffron Walden Ltd | Other services | 2020 |
| Fairfield Maritime Consulting Ltd | Professional & scientific | 2022 |
| Fairhurst Menuhin & Co Ltd | Professional & scientific | 2011 |
| Falcon Exchange Limited | Information & communication | 2015 |
| Fallon & Co Builders Limited | Construction | 2009 |
| Fallon & Co Piling Limited | Construction | 2020 |
| Fallon Bespoke Joinery Limited | Construction | 2022 |
| Fallon Creative Construction Ltd | Real estate | 2024 |
| Family Tiles Limited | Wholesale & retail | 2021 |
| Farnham's Ltd. | Construction | 2000 |
| Farrelly Property Services Limited | Construction | 2019 |
| FCL (Global) Limited | Professional & scientific | 2025 |
| Fcla Limited | Information & communication | 2025 |
| FCR Data Services Ltd | Information & communication | 2026 |
| FDJ Consultancy Services Limited | Professional & scientific | 2003 |
| Fence Heroes Ltd | Extraterritorial | 2026 |
| Fentiger Consulting Ltd | Financial services | 2013 |
| Ferndale Lodge Management Co Limited | Households | 2020 |
| Ferro Salus Ltd | Administrative & support | 2018 |
| FETCH39 Ltd | Manufacturing | 2025 |
| Fifty Five London Ltd | Professional & scientific | 2025 |
| Fill's Cafe Ltd | Hospitality | 2021 |
| Fillmed UK Ltd | Wholesale & retail | 2023 |
| Film and Furniture Limited | Information & communication | 2015 |
| Financial P. R. Associates Limited | Professional & scientific | 1984 |
| Finch Fabrications Ltd | Manufacturing | 2019 |
| Finlander Limited | Administrative & support | 2013 |
| Firefly Properties (SW) Limited | Real estate | 2017 |
| Firejam Ltd | Real estate | 2023 |
| First Prototype Ltd | Information & communication | 2024 |
| Fish Pharma Recruitment Ltd. | Administrative & support | 2011 |
| Fisheries Holdings Ltd | Financial services | 2022 |
| Fisheries London Ltd | Administrative & support | 2019 |
| Fisheries Workspace Ltd | Administrative & support | 2023 |