| Elise Wade Limited | Information & communication | 2015 |
| Elite Building Services (Essex) Ltd | Construction | 2008 |
| Elite HQ Ltd | Hospitality | 2025 |
| Elite Renewable Energy and Property Refurbishment Ltd | Construction | 2018 |
| ELL Thermal Ltd | Construction | 2024 |
| Ellenian Limited | Extraterritorial | 2004 |
| Ellmau Property Ltd | Real estate | 2025 |
| ELM Fashion and Design Ltd | Wholesale & retail | 2025 |
| ELM Finance Limited | Professional & scientific | 1998 |
| Elmcroft Developments Ltd | Construction | 2025 |
| Elms Farm Bulphan Limited | Agriculture & fishing | 1963 |
| Eluvir Ltd | Construction | 2026 |
| Elytte Limited | Health & social care | 2025 |
| EMA Property Group Limited | Real estate | 2021 |
| Embleton Ineson Associates Ltd | Administrative & support | 2024 |
| EMD Contractors Limited | Construction | 2019 |
| Emerald Security Essex Ltd | Administrative & support | 2025 |
| Emerix Limited | Other services | 2025 |
| EMG Communications Limited | Professional & scientific | 1997 |
| Emhance Limited | Health & social care | 2020 |
| Emma Howard Creates Ltd | Professional & scientific | 2020 |
| Emma Napier Consulting Services Limited | Professional & scientific | 2023 |
| Empower Learning Academy Trust | Education | 2011 |
| EMS Steelworks Limited | Construction | 2015 |
| Enabling Concepts Management Limited | Professional & scientific | 2009 |
| Energy Transition Partners LLP | | 2012 |
| Engine Carbon Detox Ltd | Wholesale & retail | 2016 |
| Enhance ME Distribution Ltd | Other services | 2019 |
| Enhance ME Training Academy Limited | Other services | 2018 |
| Enkr Limited | Health & social care | 2016 |
| Enogieru Car Ltd | Transport & logistics | 2023 |
| Epping-Ongar Railway Holdings Limited | Transport & logistics | 1995 |
| Epping-Ongar Railway Limited | Transport & logistics | 1998 |
| Eqqo Innovations Limited | Information & communication | 2015 |
| Equilibrium Global Assets (Management) Group Ltd | Administrative & support | 2019 |
| ERA Electrical Services Ltd | Construction | 2023 |
| ES Holdco Limited | Financial services | 2024 |
| ESK Catering Ltd | Hospitality | 2026 |
| ESL Gardening and Maintenance Ltd | Construction | 2025 |
| ESL Transport Limited | Transport & logistics | 2022 |
| Essex Advanced Motorcyclists Group Limited | Other services | 2004 |
| Essex After School Clubs Limited | Education | 2007 |
| Essex Beauty Training School Ltd | Education | 2015 |
| Essex Building and Roofing Ltd | Construction | 2013 |
| Essex Double Glazing Repairs Ltd | Construction | 2013 |
| Essex Drive Construction Ltd | Construction | 2018 |
| Essex Elite Gymnastics Club Ltd | Other services | 2020 |
| Essex Food Services Ltd | Hospitality | 2026 |
| Essex Install Ltd | Construction | 2019 |
| Essex Outdoor Cinema Ltd | Information & communication | 2013 |
| Essex Specialist Flat Roofing Ltd | Construction | 2022 |
| Essex Training Solutions Ltd | Education | 2017 |
| Essex UNI Rooms Ltd | Real estate | 2019 |
| Ethandune Limited | Real estate | 2013 |
| Eurotrade Fulfilment Limited | Wholesale & retail | 1993 |
| EVE IT Solutions Ltd | Information & communication | 2017 |
| Eve's Homes and Properties Ltd | Real estate | 2021 |
| Eventrock Ltd | Professional & scientific | 2012 |
| Everest Salts Limited | Wholesale & retail | 2012 |
| Evergreen Mortgages Limited | Financial services | 2023 |
| Evermore Services Ltd | Administrative & support | 2024 |
| Every Young Life Matters Community Interest Company | Extraterritorial | 2020 |
| Eves Pet Treats Ltd | Manufacturing | 2024 |
| Evesham Riverside Holiday Park Ltd | Hospitality | 2022 |
| Evgenis UK Ltd | Manufacturing | 2018 |
| EVO Consultancy Services Limited | Information & communication | 2024 |
| Evolve Talent Group Holdings Ltd | Financial services | 2025 |
| Evolve Talent Group Ltd | Arts & recreation | 2022 |
| Excellent Interiors Ltd | Construction | 2015 |
| Exquisite Development Properties Limited | Real estate | 2021 |
| Extreme Cleaning Services Ltd | Administrative & support | 2016 |
| EZ Accommodation Limited | Real estate | 2023 |
| F & E Rentals Ltd | Administrative & support | 2025 |
| F and V Limited | Wholesale & retail | 2018 |
| F1 Flooring Services Ltd | Construction | 2009 |
| FAB Fabric Interiors Ltd | Professional & scientific | 2020 |
| Faceless Marketing Journey Limited | Other services | 2024 |
| Faces on Faces Ltd | Health & social care | 2022 |
| Factory 15 Engineering Limited | Professional & scientific | 2013 |
| Fairco Solutions Ltd | Professional & scientific | 2024 |
| Fairfield Design Management Ltd | Professional & scientific | 2023 |
| Family Law Advisers Ltd | Professional & scientific | 2014 |
| Familycare Homes Limited | Health & social care | 2019 |
| Fast CNC Limited | Manufacturing | 2018 |
| Fastip Limited | Hospitality | 2017 |
| FAT Sausage Catering Ltd | Hospitality | 2015 |
| Feathratech Limited | Information & communication | 2025 |
| Fedizen Limited | Wholesale & retail | 2016 |
| Ferncroft Enterprises Limited | Administrative & support | 2004 |
| FH Premier Property Ltd | Real estate | 2025 |
| FHO Holdings Ltd | Financial services | 2022 |
| Fibre Glass Creation and Designs Ltd | Manufacturing | 2018 |
| Fibreglass Unlimited Ltd | Manufacturing | 2026 |
| Filmer Limited | Manufacturing | 2003 |
| Find My Hero | Health & social care | 2015 |
| Find My Parts Ltd | Wholesale & retail | 2021 |
| Finley J Memorial CIC | Health & social care | 2025 |
| Fire of GOD Evangelical Outreach (Fgeo) | Other services | 2016 |
| Fired UP Engineers Limited | Construction | 2023 |
| Firmament Movie Ltd | Arts & recreation | 2024 |