| Easy Iron Chelmsford Ltd | Other services | 2021 |
| Easy Learning 1 2 1 Ltd | Education | 2022 |
| Easy Paint Accident Repair Centre Limited | Manufacturing | 2011 |
| Easydm Ltd | Information & communication | 2020 |
| EAT 'DA' Food Limited | Hospitality | 2024 |
| Eatery Services Limited | Hospitality | 2025 |
| Eating Oysters Films Limited | Information & communication | 2025 |
| EAV2 Ltd | Construction | 2019 |
| EB Cyber Ltd | Information & communication | 2022 |
| EBA Consultancy Limited | Administrative & support | 2025 |
| EBA Finance Ltd | Financial services | 2021 |
| Ebanista & Co Ltd | Construction | 2020 |
| Ebcmr Ltd | Real estate | 2016 |
| Ebiwene UK Limited | Health & social care | 2010 |
| EBP Networking Essex Limited | Other services | 2024 |
| EBS Build Limited | Administrative & support | 2020 |
| Ebsol Ltd | Information & communication | 2020 |
| Ebun Oduwole Ltd | Other services | 2026 |
| EC Builds Ltd | Construction | 2018 |
| EC Financial Services Limited | Professional & scientific | 2005 |
| EC Travel Ltd | Administrative & support | 2022 |
| EC146 Limited | Construction | 2014 |
| Eccs Essex Limited | Administrative & support | 2014 |
| Echelon Facility Services Ltd | Administrative & support | 2026 |
| Echo Management Services Limited | Professional & scientific | 2024 |
| Echohelix Limited | Wholesale & retail | 2025 |
| ECI Power Limited | Energy | 2025 |
| ECL Trading Limited | Health & social care | 2014 |
| Eclipse Adviser (Pensions & Investments) Ltd | Financial services | 2020 |
| Ecliptic Technology (Aries) Limited | Information & communication | 2018 |
| Ecnard Ltd | Other services | 2014 |
| Eco Moto Limited | Wholesale & retail | 2015 |
| Eco Planet Services Ltd | Professional & scientific | 2021 |
| Eco Roofing Installations Ltd | Construction | 2023 |
| Eco Site Solutions Limited | Construction | 2012 |
| Eco Solutions Group Ltd | Construction | 2023 |
| Eco Systems Direct Limited | Manufacturing | 2009 |
| Eco-Boards Ltd | Extraterritorial | 2014 |
| Ecogen Homes Limited | Construction | 2025 |
| Ecohome Doors Ltd | Manufacturing | 2023 |
| Ecoloop Recycling Limited | Wholesale & retail | 2025 |
| Ecom Continental Ltd | Other services | 2025 |
| Ecom-Secure Limited | Information & communication | 2000 |
| Ecomm Hero Ltd | Administrative & support | 2013 |
| Ecommerce Nurse Limited | Professional & scientific | 2017 |
| Ecommors Limited | Extraterritorial | 2023 |
| Economic Justice Monitor CIC | Professional & scientific | 2025 |
| Economical Logic Solutions Limited | Professional & scientific | 2020 |
| Econq Limited | Information & communication | 2020 |
| Ecotran Energy Limited | Professional & scientific | 2014 |
| Ecotrip Couriers Ltd | Transport & logistics | 2017 |
| Ecoutility Services Ltd | Transport & logistics | 2026 |
| ECP Contracts Limited | Arts & recreation | 2006 |
| ECR Performing Arts LLP | | 2018 |
| Ecrm Solutions Limited | Professional & scientific | 2015 |
| Ecstasis Limited | Professional & scientific | 2021 |
| ECTIM2 Ltd | Professional & scientific | 2015 |
| ED Coates Developments Ltd | Construction | 2013 |
| ED3D Design Ltd | Manufacturing | 2019 |
| Edap International Ltd | Wholesale & retail | 2008 |
| Edap Ltd | Extraterritorial | 2020 |
| Eden Falconry Ltd | Other services | 2015 |
| Eden Hope Consult Limited | Construction | 2026 |
| Eden Horticultural Ltd | Professional & scientific | 2014 |
| Eden Oasis Ltd | Arts & recreation | 2020 |
| Eden Paving Ltd | Construction | 2023 |
| Edenhurst Consultants Limited | Professional & scientific | 1997 |
| Edge Agentic Limited | Information & communication | 2026 |
| Edgefa Limited | Arts & recreation | 2020 |
| Edgestone Worktops Ltd | Manufacturing | 2025 |
| Edion EV Limited | Extraterritorial | 2021 |
| Edit Wellness Ltd | Health & social care | 2024 |
| Edit. Since 2021 Ltd | Other services | 2022 |
| Edma Limited | Professional & scientific | 2011 |
| Edmans IFA Limited | Financial services | 2005 |
| Edmonston Programme Consulting Ltd | Administrative & support | 2016 |
| Edney Wood Management Company Limited | Real estate | 2006 |
| Edon Coffee Shop Limited | Wholesale & retail | 2022 |
| EDP UK Holdings Ltd | Professional & scientific | 2024 |
| Edpak Limited | Professional & scientific | 2024 |
| Edpath Ltd | Education | 2025 |
| EDR Holdings Limited | Real estate | 2002 |
| Education Without Limited | Education | 2024 |
| Educationrnr Ltd | Professional & scientific | 2024 |
| Educe AI Ltd | Information & communication | 2023 |
| Eduicon Limited | Professional & scientific | 2014 |
| Edumind Psychology Ltd | Education | 2025 |
| Edunjobi’S Place Ltd | Health & social care | 2025 |
| Edurep Limited | Professional & scientific | 2019 |
| Edusight Educational Psychology Services Ltd | Education | 2024 |
| Edvice Education Ltd | Education | 2023 |
| Edwards Walk Limited | Financial services | 2015 |
| Edyflorin Ltd | Construction | 2012 |
| Eebs Limited | Professional & scientific | 2004 |
| Eebs Payroll Services Limited | Administrative & support | 2018 |
| Eecf Ltd | Administrative & support | 2021 |
| Eff-Kay-Ell Ltd | Extraterritorial | 2016 |
| Effex Electrical Contracts Limited | Extraterritorial | 2015 |
| EFJ Zenith Living Ltd | Real estate | 2025 |
| EFR Governance Services Limited | Other services | 2020 |