| Emerson Willis Contractors Limited | Construction | 2023 |
| Emerson Willis Developments Ltd | Hospitality | 2010 |
| Emerson Willis Limited | Construction | 2002 |
| Emex Renovating Services Limited | Construction | 2022 |
| Emil Ltd | Construction | 2026 |
| Emilia James Developments Ltd | Real estate | 2019 |
| Emissa Properties Ltd | Real estate | 2022 |
| Emki Capital Ltd | Wholesale & retail | 2026 |
| EML Express Ltd | Transport & logistics | 2025 |
| EML Trans Ltd | Transport & logistics | 2019 |
| Emma Dryliner Ltd | Construction | 2019 |
| Emmanuel Global Limited | Wholesale & retail | 2026 |
| Emochi Limited | Hospitality | 2018 |
| Emok Consulting Limited | Information & communication | 2017 |
| Emok Logistic Ltd | Manufacturing | 2024 |
| Empire Building & Property Services Ltd | Manufacturing | 2020 |
| Empire Properties Investment Limited | Real estate | 2025 |
| EMS Building & Property Maintenance Ltd | Construction | 2024 |
| EMS Response Ltd | Health & social care | 2020 |
| EMS Solutions (LDQ) Ltd | Construction | 2018 |
| Encsi Limited | Transport & logistics | 2016 |
| Endri Smiles Limited | Health & social care | 2026 |
| Energise Studio Limited | Arts & recreation | 2025 |
| Energy & Electrical Solutions Limited | Construction | 2019 |
| Enfuture Limited | Real estate | 2020 |
| Engage Services Ltd | Transport & logistics | 2026 |
| Engine Solutions Ltd | Wholesale & retail | 2024 |
| Enginehubuk Ltd | Professional & scientific | 2025 |
| Enhanced Home Renovations Ltd | Construction | 2025 |
| Enice Training & Care Ltd | Health & social care | 2019 |
| Enigma Inc Ltd | Professional & scientific | 2013 |
| Enigma Insulation Supplies Limited | Construction | 2017 |
| ENJ Hotel Limited | Hospitality | 2021 |
| Ennys Consolidated Services Limited | Professional & scientific | 2017 |
| Enryprint Limited | Wholesale & retail | 2025 |
| Enspire Creative Limited | Information & communication | 2024 |
| Enterprise HR Systems Ltd | Professional & scientific | 2023 |
| Enterprise Realty Solutions Ltd | Real estate | 2025 |
| Enterprise Trans Ltd | Transport & logistics | 2017 |
| Envale UK Ltd | Water & waste | 2019 |
| Environmental Law Limited | Professional & scientific | 2008 |
| Envisionxt Ltd | Information & communication | 2024 |
| Enzo Cleaning Ltd | Administrative & support | 2025 |
| Enzo Couriers Ltd | Transport & logistics | 2025 |
| Enzo Real Estates Ltd | Real estate | 2024 |
| Enzo Tours Limited | Administrative & support | 2026 |
| EOM Investments LLP | | 2010 |
| EP Property Ltd | Real estate | 2023 |
| EP Surveying Ltd | Administrative & support | 2026 |
| EPC and Surveying UK Ltd | Professional & scientific | 2024 |
| Ephraim Tyers Venture Limited | Health & social care | 2022 |
| Equality, Diversity & Inclusion Limited | Professional & scientific | 2020 |
| Equilibro Ltd | Education | 2015 |
| Equipoint Developments Ltd | Construction | 2017 |
| ER Build Ltd | Construction | 2017 |
| Erads Care Limited | Health & social care | 2022 |
| Erbern Ltd | Construction | 2019 |
| Erciworks Ltd | Construction | 2026 |
| ERE J Care Ltd | Health & social care | 2021 |
| Eric Ivan Ltd | Transport & logistics | 2018 |
| Eris Solutions Ltd | Wholesale & retail | 2021 |
| Eris Construction Ltd | Construction | 2014 |
| Eris Hand Car Wash Limited | Administrative & support | 2025 |
| ERL Consultancy Limited | Professional & scientific | 2006 |
| Eros 92 Limited | Construction | 2014 |
| Errys Ltd | Wholesale & retail | 2019 |
| Ersoy Assets Ltd | Real estate | 2026 |
| Ersoy Ltd | Hospitality | 2022 |
| ES (LT) Carpentry Ltd | Construction | 2018 |
| Escape Restaurant and Bar Ltd | Hospitality | 2013 |
| Escott Limited | Other services | 2011 |
| Esdot Trade Limited | Wholesale & retail | 2023 |
| Esense Ltd | Information & communication | 2022 |
| Eskaydee Ventures Ltd | Construction | 2011 |
| ESS Cleaning Ltd | Other services | 2020 |
| ESS6RENTALS Limited | Administrative & support | 2026 |
| Essential by Nature Ltd | Manufacturing | 2016 |
| Essential Luxury Drivers Ltd | Transport & logistics | 2022 |
| Essentixuk Ltd | Wholesale & retail | 2025 |
| Essenza Interiors Limited | Administrative & support | 2010 |
| Essex Angling Ltd | Information & communication | 2010 |
| Essex Book Keeping & Payroll Services Ltd | Professional & scientific | 2019 |
| Essex Clearances Ltd | Water & waste | 2021 |
| Essex Country Club Ltd | Wholesale & retail | 2022 |
| Essex Event Security Ltd | Administrative & support | 2025 |
| Essex Express Transport Ltd | Transport & logistics | 2020 |
| Essex Grip Services Limited | Professional & scientific | 2015 |
| Essex Ground Maintenance Ltd | Administrative & support | 2021 |
| Essex Head Spa Ltd | Other services | 2025 |
| Essex Industrial Supplies Limited | Wholesale & retail | 1998 |
| Essex Interpreting Limited | Professional & scientific | 2012 |
| Essex Knight Riders Limited | Real estate | 2023 |
| Essex Links Exclusive Travel Limited | Transport & logistics | 2021 |
| Essex Pizza Ltd | Hospitality | 2026 |
| Essex Plumbing and Drainage Specialists Ltd | Construction | 2024 |
| Essex Private Tutors Ltd | Education | 2024 |
| Essex Property Leasing Ltd | Real estate | 2018 |
| Essex Recovery Ltd | Transport & logistics | 2023 |
| Essex Renewables Ltd | Other services | 2025 |
| Essex Scuba Ltd | Education | 2025 |