| Eniz Solutions Limited | Professional & scientific | 2022 |
| Enjoycare Services Ltd | Health & social care | 2025 |
| Enkai Ltd | Information & communication | 2025 |
| Ensco 1484 Limited | Professional & scientific | 2023 |
| Ensco 1529 Limited | Professional & scientific | 2024 |
| Ensco 1530 Limited | Professional & scientific | 2024 |
| ENT Logistics Limited | Health & social care | 2020 |
| Enterprise Studios Ltd | Real estate | 2018 |
| Enthalpein Ltd | Professional & scientific | 2019 |
| ENV Music Group Ltd | Information & communication | 2025 |
| EOM Investments Partners Ltd | Financial services | 2016 |
| EON Holdings Limited | Real estate | 2025 |
| EP Property Care Ltd | Construction | 2026 |
| Equilibrium Debt Recovery Limited | Financial services | 2021 |
| Equine and Animal Reiki Limited | Professional & scientific | 2020 |
| Equinox RTE Company Limited | Professional & scientific | 2008 |
| Equus Property Group Limited | Real estate | 2026 |
| Erasmus Enterprises Limited | Wholesale & retail | 2014 |
| ERC Fire Systems Ltd | Construction | 2025 |
| Esandor Limited | Wholesale & retail | 2025 |
| ESE Designs Ltd | Information & communication | 2013 |
| Eshwar (PVT) Limited | Wholesale & retail | 2026 |
| ESI Building Ltd | Transport & logistics | 2016 |
| Essential Fleet Services Limited | Wholesale & retail | 2024 |
| Essential Truck Assistance Limited | Wholesale & retail | 2021 |
| Essex & Herts Tutors Limited | Education | 2015 |
| Essex Algarve Group Holdings Ltd | Financial services | 2025 |
| Essex Algarve Realty Limited | Households | 2025 |
| Essex and Herts Properties Limited | Real estate | 2024 |
| Essex Beauty Palace Ltd | Wholesale & retail | 2018 |
| Essex Building & Maintenance Services Limited | Construction | 2020 |
| Essex Chauffeur Group Ltd | Transport & logistics | 2021 |
| Essex Coachworks Limited | Wholesale & retail | 2007 |
| Essex Coast Physio Limited | Health & social care | 2022 |
| Essex Commercial Upholstery Limited | Manufacturing | 2019 |
| Essex Diabetes Endocrine Academic Network Limited | Education | 2017 |
| Essex Drainage Limited | Construction | 2013 |
| Essex EPC Assessors Ltd | Professional & scientific | 2026 |
| Essex Extreme Clean Ltd | Administrative & support | 2024 |
| Essex Fire Solutions Ltd | Public administration | 2026 |
| Essex First Roofing Ltd | Construction | 2025 |
| Essex Food Centre Limited | Wholesale & retail | 2015 |
| Essex Food Guide Ltd | Professional & scientific | 2025 |
| Essex Fresh Catch Limited | Wholesale & retail | 2020 |
| Essex GAS (UK) Limited | Construction | 2006 |
| Essex Gliding Club Limited | Arts & recreation | 1960 |
| Essex Home Cleaners Ltd | Administrative & support | 2025 |
| Essex Homes Upgrades Limited | Administrative & support | 2017 |
| Essex Influencers Ltd | Professional & scientific | 2024 |
| Essex Jamme Masjid Trust Limited(The) | Other services | 1986 |
| Essex Kilns Limited | Manufacturing | 1991 |
| Essex Laser Lipo Ltd | Health & social care | 2025 |
| Essex Linen Services Ltd | Administrative & support | 2020 |
| Essex Linetech Limited | Construction | 2004 |
| Essex Maintenance Limited | Manufacturing | 2004 |
| Essex Minimarket S Limited | Wholesale & retail | 2026 |
| Essex Mobile Welding Ltd | Construction | 2016 |
| Essex Multitasking Limited | Construction | 2012 |
| Essex NDT Supplies Ltd | Wholesale & retail | 2026 |
| Essex Plant Demolition Limited | Administrative & support | 2004 |
| Essex Plastics Limited | Wholesale & retail | 2012 |
| Essex Professional Cleaning Services Ltd | Administrative & support | 2017 |
| Essex Property Group Limited | Real estate | 2025 |
| Essex Provider Network (EPN) C.I.C. | Education | 2016 |
| Essex Scanning Services Ltd | Health & social care | 2019 |
| Essex Sports Enterprise Limited | Arts & recreation | 2012 |
| Essex Strength and Conditioning Limited | Arts & recreation | 2016 |
| Essex Terrazzo & Ceramic Tiling Ltd | Construction | 2020 |
| Essex Tuition Service Ltd | Education | 2022 |
| Essex Vape House Limited | Wholesale & retail | 2025 |
| Essex Wellness Hypnotherapy Ltd | Health & social care | 2025 |
| Essexultrasound Limited | Health & social care | 2025 |
| Estate Agent 360 Limited | Information & communication | 2023 |
| Estate Preservation Ltd | Financial services | 2016 |
| Estuary Accountancy Services Limited | Professional & scientific | 2011 |
| Estuary Aerospace Design Ltd | Other services | 2015 |
| Estuary Aviation Limited | Transport & logistics | 1990 |
| Estuary Digital Limited | Professional & scientific | 2018 |
| Estuary Homes Design Limited | Administrative & support | 2010 |
| Estuary Life Solutions Ltd | Administrative & support | 2023 |
| Estuary Lodge (Southend) RTM Company Ltd | Administrative & support | 2012 |
| Estuary Properties (UK) Ltd | Information & communication | 1999 |
| Estuary Rentals Limited | Real estate | 2018 |
| Estuary Trustees Limited | Professional & scientific | 1999 |
| Estuary Windows Ltd | Construction | 2021 |
| Etsf Ltd | Information & communication | 2016 |
| ETZ Productions Ltd | Construction | 2025 |
| EU Plumbing Limited | Construction | 2018 |
| Euro (Seating) Group UK Limited | Financial services | 2012 |
| Eurotec Asset Management Ltd | Real estate | 2015 |
| EV Go Limited | Construction | 2019 |
| EV1PAY Ltd | Information & communication | 2026 |
| Evans Essex Property Ltd | Real estate | 2021 |
| EVE Allen Design Ltd | Professional & scientific | 2018 |
| Evelyn & Ford Ltd | Administrative & support | 2019 |
| Events by Sakura Ltd | Administrative & support | 2024 |
| Everard Developments Ltd | Construction | 2023 |
| Evergreen Soap Company Ltd | Manufacturing | 2019 |
| Everstonetrading Limited | Wholesale & retail | 2025 |
| Every Friday Limited | Professional & scientific | 2017 |