| Essex Medical Society Limited | Education | 2015 |
| Essex Medical Training Limited | Education | 2017 |
| Essex Modular & Joinery Ltd | Construction | 2025 |
| Essex MOT Centre Limited | Wholesale & retail | 2013 |
| Essex Motorhaus Ltd | Extraterritorial | 2022 |
| Essex Painters and Property Services Limited | Construction | 2022 |
| Essex PAT Ltd | Construction | 2019 |
| Essex Pawz Limited | Agriculture & fishing | 2017 |
| Essex Performance Centre Ltd. | Wholesale & retail | 2009 |
| Essex Plumbing & Heating Limited | Construction | 2023 |
| Essex Plumbstore Limited | Wholesale & retail | 2021 |
| Essex Portable Loos Limited | Administrative & support | 2025 |
| Essex Recons Limited | Wholesale & retail | 2019 |
| Essex Roofing & Solar Ltd | Construction | 2022 |
| Essex Screw Piling Limited | Construction | 2025 |
| Essex Shipping Services Limited | Transport & logistics | 1989 |
| Essex Site Supplies & Hire Limited | Construction | 2022 |
| Essex Smokehouse Limited | Hospitality | 2025 |
| Essex Tamil Sangam CIC | Health & social care | 2022 |
| Essex Tank Tech Limited | Wholesale & retail | 2025 |
| Essex Technical Solutions Ltd | Professional & scientific | 2018 |
| Essex Towing & Transport Ltd | Transport & logistics | 2026 |
| Essex Truck Repairs Ltd | Manufacturing | 2015 |
| Essex Utility Surveys Ltd | Construction | 2026 |
| Essex Vehicles Ltd | Wholesale & retail | 2014 |
| Essex Wall Systems Limited | Construction | 2021 |
| Essex Wheel Doctor Ltd | Wholesale & retail | 2023 |
| Essex Window Service Limited | Construction | 2023 |
| Essex Woodcrafts Ltd | Manufacturing | 2023 |
| EST Global Ltd | Wholesale & retail | 2020 |
| EST8 Facilities Ltd | Construction | 2024 |
| Estuary Bay Property Limited | Real estate | 2025 |
| Estuary Glass & Glazing Limited | Construction | 2019 |
| Estuary Mechanical Services Ltd | Professional & scientific | 2025 |
| Estuary Property Solutions Ltd | Construction | 2026 |
| Estuary Site Wide Services Ltd | Construction | 2017 |
| ETC Cleaning and Property Maintenance Ltd | Administrative & support | 2009 |
| Ethical Transitions Ltd | Administrative & support | 2014 |
| Ethos Healthcare Solutions Ltd | Health & social care | 2021 |
| Etma Ltd | Information & communication | 2022 |
| ETX Basildon Ltd | Wholesale & retail | 2023 |
| Euphoria by Lara Norman Limited | Other services | 2021 |
| Euro Commercial Auctions Limited | Manufacturing | 2025 |
| Euro EX Pres Ltd | Wholesale & retail | 2026 |
| Euro Marine Surveys Limited | Professional & scientific | 1989 |
| Euro Windows Technologies Ltd | Construction | 2024 |
| Eurocomms Data Solutions Ltd | Professional & scientific | 2021 |
| Eurojap Car Parts Limited | Wholesale & retail | 2007 |
| Euroluc Ltd | Transport & logistics | 2013 |
| Eurolynx Services Ltd | Administrative & support | 2014 |
| European Lacquers Limited | Wholesale & retail | 2015 |
| Eurowide Engineers Ltd | Administrative & support | 2014 |
| EV Connect Electrical Limited | Construction | 2021 |
| EVA Coles Limited | Wholesale & retail | 2020 |
| Evagate Limited | Construction | 2024 |
| Evans Empire & Estates Limited | Households | 2023 |
| EVE Healthcare Ltd | Health & social care | 2019 |
| EVE Legacy Properties Ltd | Real estate | 2022 |
| Evecoproperties Ltd | Real estate | 2018 |
| Evelyn Chandler Limited | Other services | 2017 |
| Event First Responders Ltd | Health & social care | 2025 |
| Eventoni Ltd | Administrative & support | 2025 |
| Events Xtravaganze Ltd | Real estate | 2020 |
| Events Yard Ltd | Hospitality | 2019 |
| Eventworx Productions Ltd | Professional & scientific | 2022 |
| Evercloud Limited | Information & communication | 2026 |
| Everest Paving and Building Ltd | Construction | 2026 |
| Everett Electrical Ltd | Construction | 2017 |
| Everybodyeco Limited | Wholesale & retail | 2019 |
| Everycool Solutions Ltd | Construction | 2025 |
| Everyone Digital CIC | Other services | 2024 |
| Everything Jobs Ltd | Information & communication | 2024 |
| Evmax Ltd | Construction | 2021 |
| Evoke Creative Legacy CIC | Health & social care | 2025 |
| Evoke Creative Wellness Limited | Education | 2024 |
| Evoke Professional Ltd | Manufacturing | 2022 |
| Evolve Accountancy Solutions Limited | Professional & scientific | 2018 |
| Evolve-Scaffold Ltd | Construction | 2025 |
| Evolvebooks Accountancy Services Ltd | Professional & scientific | 2021 |
| Evrica Ltd | Transport & logistics | 2019 |
| Evro Start 2023 Ltd | Transport & logistics | 2023 |
| Evryday Athlete Ltd | Health & social care | 2024 |
| EVY & Co Limited | Transport & logistics | 2019 |
| Ewens Property Management Limited | Real estate | 2024 |
| EWS Homes Limited | Real estate | 2023 |
| Excel Recruiting Ltd | Information & communication | 2021 |
| Excel Wizards Limited | Information & communication | 2023 |
| Excellence Care Ltd | Health & social care | 2008 |
| Excellence Digital Solutions Ltd | Information & communication | 2023 |
| Excellence Property Investment Ltd | Construction | 2020 |
| Excellence Support Services Ltd | Health & social care | 2023 |
| Excellence Trends Ltd | Wholesale & retail | 2026 |
| Excellent Load and Carry Limited | Transport & logistics | 2016 |
| Exchange Fast Ltd | Construction | 2020 |
| Exclusive PIX Media Limited | Professional & scientific | 2014 |
| Executive Surveillance & Investigations Ltd | Other services | 2018 |
| Eximious Global Ltd | Administrative & support | 2017 |
| Exley Screeding Limited | Other services | 2015 |
| Exley Tiling Limited | Construction | 2015 |
| Exonia Network Ltd | Information & communication | 2012 |