| Essex Acupuncture Ltd | Health & social care | 2020 |
| Essex Book Keeping Services Ltd | Professional & scientific | 2020 |
| Essex Climate Service & Maintenance Ltd | Construction | 2021 |
| Essex Climate Services Limited | Construction | 2021 |
| Essex Engineering Services Limited | Manufacturing | 2015 |
| Essex Fire Protection Services Limited | Public administration | 2020 |
| Essex Leisure Group Limited | Real estate | 2018 |
| Essex Lofts Limited | Construction | 2018 |
| Essex Mini Piling Contractor Ltd | Construction | 2023 |
| Essex Solar Limited | Construction | 2024 |
| Essex Studios Ltd | Arts & recreation | 2023 |
| Essex Swimming Academy Limited | Arts & recreation | 2012 |
| Essex Van & Car Hire Limited | Administrative & support | 2023 |
| Estate BS Ltd | Real estate | 2022 |
| Estelle Holdings Limited | Wholesale & retail | 2024 |
| Ethical Content Studio Ltd | Professional & scientific | 2026 |
| Ethical Ethiopian Experiences Ltd | Administrative & support | 2025 |
| Ethical Fishing Experiences Ltd | Administrative & support | 2025 |
| Eunoia Consulting Limited | Information & communication | 2012 |
| Euraf Limited | Wholesale & retail | 2024 |
| Euro Technology Services Limited | Real estate | 1995 |
| Eurolink Hub Ltd | Education | 2025 |
| European Centre for Social Innovation Ltd | Real estate | 2014 |
| Eurotech Ltd | Manufacturing | 1982 |
| Evelyn Pearl Properties Limited | Construction | 2021 |
| Event Venue Solutions Ltd | Information & communication | 2024 |
| Eveology Ltd | Professional & scientific | 2015 |
| Everglow Lighting and Decor Ltd | Wholesale & retail | 2026 |
| Evergreen Ipswich Co. Ltd | Real estate | 2014 |
| Evermark Developments Ltd | Construction | 2026 |
| Evie Design Ltd | Manufacturing | 2018 |
| EVM Aviation Ltd | Extraterritorial | 2018 |
| Evmed Ltd | Health & social care | 2022 |
| EVO DJS Ltd | Arts & recreation | 2018 |
| EVO Event Days Ltd | Arts & recreation | 2023 |
| EVO Events UK (Event Hire & Inflatables) Ltd | Arts & recreation | 2017 |
| EVO Group Holdings Ltd | Financial services | 2022 |
| EVO Inflatables Ltd | Arts & recreation | 2018 |
| EVO Tickets Ltd | Arts & recreation | 2024 |
| EVP Traders Ltd | Wholesale & retail | 2026 |
| Excalibur Renovations Ltd | Construction | 2008 |
| Excelsior Holidays Limited | Administrative & support | 2024 |
| Excelsis Technical Limited | Administrative & support | 2021 |
| Excessweather NO 2 Limited | Financial services | 2014 |
| Excite Audio Visual Limited | Manufacturing | 2003 |
| Excite Electrical Limited | Construction | 2022 |
| Excite Technology Limited | Manufacturing | 2021 |
| Executive Assistants Ltd | Administrative & support | 2011 |
| Exeter Road Management Company Limited | Households | 1994 |
| Expertechnix Ltd | Information & communication | 2023 |
| Experts Computer Services Limited | Information & communication | 2003 |
| Explosiv Ltd | Professional & scientific | 2018 |
| Express Metalwork UK Ltd | Manufacturing | 2023 |
| Extella Limited | Hospitality | 2016 |
| Extend & Glow Ltd | Other services | 2025 |
| Extra Help at Hand Limited | Professional & scientific | 2012 |
| Extraroom Builders Limited | Construction | 2016 |
| Extreme Alpine Rope Access Ltd | Construction | 2021 |
| Exuve Ltd | Professional & scientific | 2020 |
| EZ Rent 2 Limited | Real estate | 2017 |
| Ezee Way Limited | Wholesale & retail | 2019 |
| Ezycharge Ltd | Administrative & support | 2022 |
| Ezydiner Ltd | Hospitality | 2026 |
| F C Electrical Ltd. | Construction | 2005 |
| F&T Decorations Ltd | Construction | 2025 |
| F.P. Development Limited | Real estate | 2002 |
| F1LINUX Limited | Information & communication | 2014 |
| FAB Science Limited | Arts & recreation | 2013 |
| Fabric Business Solutions Limited | Professional & scientific | 2023 |
| Fairgrade Limited | Professional & scientific | 1996 |
| Fairhill Enterprises Ltd | Wholesale & retail | 2024 |
| Fairview Surveyors Ltd | Professional & scientific | 2026 |
| Falcon Wharf Freehold Limited | Real estate | 2008 |
| Falcon Wharf Property Services Ltd | Real estate | 2025 |
| Falesia Wines Limited | Wholesale & retail | 2020 |
| Falkland Islands Company Limited | Construction | 1902 |
| Falkland Islands Trading Company Limited(The) | Wholesale & retail | 1957 |
| Famesa Healthcare Ltd | Administrative & support | 2023 |
| Family Luxe Travel Co Ltd | Administrative & support | 2025 |
| Fanshaw Productions Limited | Arts & recreation | 2004 |
| Farlea Developments Limited | Administrative & support | 2017 |
| Farm 2 Table Ltd | Wholesale & retail | 2023 |
| Farrell Page Properties Limited | Real estate | 2010 |
| Farro Bakery Ltd | Hospitality | 2017 |
| Farro Central Ltd | Real estate | 2024 |
| Fashion Flooring Limited | Wholesale & retail | 2017 |
| Fashion Interiors Limited | Wholesale & retail | 2017 |
| Faversham Road Residents Limited | Households | 2015 |
| Fawkon Walk (Hoddesdon) Management Company Limited | Households | 2004 |
| FB Farming Limited | Agriculture & fishing | 2014 |
| FD Exec Limited | Professional & scientific | 2019 |
| Feast Finder Ltd | Information & communication | 2024 |
| Feelrefreshed Ltd | Health & social care | 2025 |
| Felix Cognita Ltd | Professional & scientific | 2019 |
| Felsted School Mission(The) | Health & social care | 1944 |
| Female Founders Community CIC | Administrative & support | 2025 |
| Feminine & Co UK Ltd. | Other services | 2016 |
| Fenway Collective Limited | Professional & scientific | 2025 |
| Fern Consultancy Services Ltd | Information & communication | 2022 |
| Fernova Group Ltd | Real estate | 2024 |