| Eqworlduk Limited | Education | 2025 |
| Erayeserde Limited | Wholesale & retail | 2024 |
| ERC Limited | Real estate | 2003 |
| Erciyes London Ltd | Real estate | 2025 |
| Erezhal Ltd | Wholesale & retail | 2025 |
| ERI Chase Limited | Real estate | 2026 |
| Eric & ARY Ltd | Construction | 2019 |
| Eridge Underwriting Agency Ltd | Financial services | 2015 |
| Erimar Limited | Real estate | 2021 |
| Erin-Oke Energy Ltd | Wholesale & retail | 2025 |
| Erincz Building Services Ltd | Construction | 2019 |
| Erison Capital Ltd | Real estate | 2024 |
| Eritrean Media Network Limited | Information & communication | 2025 |
| Erma Brothers Foundation Ltd | Health & social care | 2025 |
| Ermas Homes Ltd | Real estate | 2024 |
| Ermas Ltd | Wholesale & retail | 2020 |
| Ermi Software Ltd | Information & communication | 2017 |
| Ernest Cutts Limited | Real estate | 1955 |
| ERO Sushi Ltd | Hospitality | 2023 |
| Erondite Ltd | Manufacturing | 2010 |
| ES Experts Ltd | Professional & scientific | 2023 |
| ES Fabweld Ltd | Construction | 2016 |
| Escape Central Ltd | Wholesale & retail | 2025 |
| Eshar Holdings Limited | Financial services | 2024 |
| Eshar Limited | Administrative & support | 2012 |
| Espana Traders Ltd | Wholesale & retail | 2019 |
| Espee Pharma (UK) Limited | Wholesale & retail | 2014 |
| Esperanza Living Limited | Health & social care | 2022 |
| Espire Global Ltd | Information & communication | 2018 |
| Espoir Group Ltd | Wholesale & retail | 2023 |
| Essemkay Enterprises Ltd | Wholesale & retail | 2026 |
| Essence Land Limited | Real estate | 2020 |
| Essential 106 Ltd | Professional & scientific | 2021 |
| Essential Living Limited | Construction | 2025 |
| Essentials Corner Ltd | Wholesale & retail | 2024 |
| Essentials Vault Ltd | Wholesale & retail | 2025 |
| Essex & London Property Management Group Limited | Real estate | 2024 |
| Essex Accountancy Limited | Professional & scientific | 2013 |
| Essex and Suffolk Developments Ltd | Construction | 2026 |
| Essex Badminton Academy Limited | Education | 2024 |
| Essex Beauty Treatments Ltd | Other services | 2024 |
| Essex Bouncy Castle Hire Ltd | Administrative & support | 2026 |
| Essex Builders Limited | Construction | 2017 |
| Essex Casuals Ltd | Wholesale & retail | 2017 |
| Essex Cleanco Ltd | Administrative & support | 2025 |
| Essex Construction Training & Assessment Ltd | Construction | 2025 |
| Essex Construction Training Ltd | Construction | 2019 |
| Essex Consultancy Limited | Administrative & support | 2013 |
| Essex Court Management (Gravesend) Limited | Households | 1988 |
| Essex Cultural & Youth Society | Education | 2015 |
| Essex Designer Brands Limited | Wholesale & retail | 2025 |
| Essex Development Ltd | Extraterritorial | 2013 |
| Essex Door & Window Repairs Ltd | Construction | 2022 |
| Essex Energy (UK) Ltd | Construction | 2014 |
| Essex Frost Ltd | Professional & scientific | 2025 |
| Essex Glow Ltd | Other services | 2021 |
| Essex Green Roofing Limited | Construction | 2019 |
| Essex Group Employee Trustee Limited | Extraterritorial | 2019 |
| Essex Group Holdings Limited | Construction | 2007 |
| Essex GUN Limited | Wholesale & retail | 2003 |
| Essex Gynaecology Services Limited | Health & social care | 2006 |
| Essex House Investments Ltd | Real estate | 2024 |
| Essex Inventory Services Limited | Administrative & support | 2015 |
| Essex Investors Ltd | Real estate | 2018 |
| Essex Kebabish Food Limited | Hospitality | 2023 |
| Essex Lifting Ltd | Construction | 2025 |
| Essex Locums Ltd | Administrative & support | 2021 |
| Essex Music Development Agency CIC | Arts & recreation | 2017 |
| Essex Plastering Solutions Limited | Construction | 2024 |
| Essex Pole & Tone Limited | Arts & recreation | 2023 |
| Essex Porsche Specialist Limited | Wholesale & retail | 2023 |
| Essex Powerwash Ltd | Administrative & support | 2026 |
| Essex Screeding Limited | Construction | 2017 |
| Essex Services Group Limited | Construction | 1975 |
| Essex Shooting Syndicates Ltd | Wholesale & retail | 2021 |
| Essex Surveyors Ltd | Professional & scientific | 2025 |
| Essex Tours and Travels Limited | Administrative & support | 2023 |
| Essex Trade Ltd | Wholesale & retail | 2025 |
| Essex Vans Refrigeration Ltd | Wholesale & retail | 2024 |
| Essex Wines (Hornchurch) Ltd | Wholesale & retail | 2010 |
| EST by Haizel Ltd | Construction | 2022 |
| Estate Ease Limited | Construction | 2023 |
| Estate Lighting Solutions Limited | Construction | 2008 |
| Estate Realty Ltd | Real estate | 2025 |
| Estee Services Global Limited | Wholesale & retail | 2026 |
| Esther Cleaning Service Ltd | Administrative & support | 2021 |
| Esthetic Line Beauty Clinic Limited | Other services | 2017 |
| Estice Limited | Health & social care | 2013 |
| Estre Limited | Professional & scientific | 2017 |
| Estream Limited | Information & communication | 2007 |
| ET Broking Ltd | Financial services | 2026 |
| ET Consultancy Ltd | Administrative & support | 2022 |
| Etaxfirm Ltd | Professional & scientific | 2025 |
| ETC Facilities Ltd | Construction | 2005 |
| ETC Property Management Ltd | Households | 2024 |
| Etcetera Combined Holdings Ltd | Financial services | 2024 |
| Etcetera Developments Ltd | Construction | 2024 |
| Etcetera Investment Holdings Limited | Financial services | 2024 |
| Eterna Ltd | Wholesale & retail | 2026 |
| Eternal Digital Memories Limited | Professional & scientific | 2024 |