| ESG Pool Ventilation Limited | Manufacturing | 1979 |
| ESG REC Limited | Administrative & support | 2024 |
| Espadon London Ltd | Wholesale & retail | 2023 |
| Esposito Levels Limited | Wholesale & retail | 2025 |
| Essential Beauty & Aesthetics Co Ltd | Other services | 2024 |
| Essential Fibre Services Limited | Information & communication | 2017 |
| Essential Huge Limited | Wholesale & retail | 2025 |
| Essential Nail Co Ltd | Other services | 2025 |
| Essential-Healthcare Ltd | Wholesale & retail | 2014 |
| Essentially Rentals Ltd | Wholesale & retail | 2019 |
| Essex & Herts Construction Ltd | Construction | 2023 |
| Essex & Suffolk Electrical Ltd | Construction | 2013 |
| Essex 4 X 4 Centre Limited | Extraterritorial | 2011 |
| Essex and East London Van Services Limited | Wholesale & retail | 2003 |
| Essex Angel Solutions Ltd | Health & social care | 2024 |
| Essex Animal Feeds Ltd | Extraterritorial | 2009 |
| Essex Baby Group Ltd | Other services | 2026 |
| Essex Bath & Build Ltd | Construction | 2026 |
| Essex Body Sculpting Ltd | Other services | 2025 |
| Essex Business Forum Ltd | Administrative & support | 2011 |
| Essex Core Services Ltd | Extraterritorial | 2025 |
| Essex Cryo Recovery Ltd | Health & social care | 2022 |
| Essex Dermatology Clinic Limited | Health & social care | 2021 |
| Essex Haulage Limited | Water & waste | 2022 |
| Essex Hinge Co. Limited | Manufacturing | 1936 |
| Essex Hire & Sales Ltd | Administrative & support | 2009 |
| Essex Land and Build Developments Limited | Construction | 2014 |
| Essex Letting Solutions Limited | Real estate | 2025 |
| Essex Materials Ltd | Wholesale & retail | 2021 |
| Essex Menopause Clinic Limited | Health & social care | 2021 |
| Essex Pain Specialist Limited | Health & social care | 2014 |
| Essex Piano Tuner Limited | Arts & recreation | 2020 |
| Essex Pitch UK Ltd | Manufacturing | 2018 |
| Essex Prestige Building Services Ltd | Construction | 2025 |
| Essex Primary Care Support Services Limited | Administrative & support | 2023 |
| Essex Private Clinic Limited | Health & social care | 2020 |
| Essex Private Doctors Ltd | Health & social care | 2022 |
| Essex Pro Landscapes Ltd | Other services | 2022 |
| Essex Pro Wash Ltd | Administrative & support | 2021 |
| Essex Property Sales and Rentals Ltd | Real estate | 2016 |
| Essex Recycled Pallet Company Ltd | Water & waste | 2022 |
| Essex Recycling Group Limited | Manufacturing | 2023 |
| Essex Scaffolding Solutions Ltd | Construction | 2024 |
| Essex Snagging Services Limited | Construction | 2021 |
| Essex Star Motors Ltd | Wholesale & retail | 2021 |
| Essex Testing & Training Ltd | Education | 2012 |
| Essex Timber Fencing & Paving Ltd | Construction | 2017 |
| Essex Vehicle Management Ltd | Administrative & support | 2018 |
| Esstek Ltd | Real estate | 2010 |
| Esteemed Fitness Ltd | Education | 2021 |
| Esthetiques London Ltd | Health & social care | 2016 |
| ESW Motorsports Ltd | Arts & recreation | 2023 |
| Etbd Ltd | Professional & scientific | 2024 |
| Etcetera Construction Services Limited | Construction | 1986 |
| Eternal Fitness Limited | Professional & scientific | 1997 |
| Eternal Spring Limited | Other services | 2002 |
| Etheon Consulting Ltd | Information & communication | 2024 |
| Ethica Services Limited | Health & social care | 2017 |
| Ethuse Limited | Hospitality | 2015 |
| ETN Group Ltd | Information & communication | 2021 |
| Etxeko Janaria Ltd | Hospitality | 2022 |
| Eunice Beauty Cosmetics PVT Limited | Other services | 2025 |
| Eureka Sales Limited | Administrative & support | 2012 |
| Euro Pro Tour Limited | Arts & recreation | 1999 |
| European Football Agents Limited | Arts & recreation | 2016 |
| European Waste Management Limited | Water & waste | 2025 |
| Europoll Supply Limited | Administrative & support | 2012 |
| Eurus Power Ltd | Professional & scientific | 2024 |
| Evai Limited | Information & communication | 2016 |
| Evans Optometric Consultancy Ltd | Professional & scientific | 2019 |
| Evans Trading Ltd | Wholesale & retail | 2014 |
| Evelon Solutions Ltd | Information & communication | 2014 |
| Evenit Trading and Service Ltd | Wholesale & retail | 2024 |
| Evercaringhands Ltd | Administrative & support | 2022 |
| Evercraft Stationery & Supplies Ltd | Wholesale & retail | 2025 |
| Everflux Limited | Extraterritorial | 1997 |
| Evergreen Assessments Limited | Administrative & support | 2007 |
| Everlong Construction Ltd | Construction | 2013 |
| Everoc Solutions Limited | Professional & scientific | 2021 |
| Everstone Investment 2 Limited | Financial services | 2022 |
| Every Point Solutions Ltd | Information & communication | 2023 |
| Evicare Limited | Extraterritorial | 1998 |
| Evilution Ltd | Information & communication | 2021 |
| EVO1 Construction Ltd | Construction | 2025 |
| Evolution Diagnostics Ltd | Wholesale & retail | 2024 |
| Evolution Trade Services Limited | Financial services | 2012 |
| Evolve Consultancy Group Limited | Professional & scientific | 2024 |
| Evolve Resourcing Solutions Ltd | Administrative & support | 2018 |
| Evoo AI PLC | Information & communication | 2023 |
| EVT Services Ltd | Construction | 2020 |
| EWI Applicators Ltd | Construction | 2022 |
| EX Ante Advisory Limited | Professional & scientific | 2019 |
| Ex-Ceptional Women Ltd | Other services | 2026 |
| Example Solutions Ltd | Information & communication | 2009 |
| Excel Electrical & Testing Services Ltd | Construction | 2023 |
| Excel Health Care Limited | Wholesale & retail | 1993 |
| Excel Installations Ltd | Construction | 2002 |
| Excel Maintenance Limited | Construction | 2004 |
| Excellence-Solutions Limited | Education | 2013 |
| Exceptional Tech Ltd | Wholesale & retail | 2023 |