| ECI (Braintree) Limited | Real estate | 2019 |
| Eco Bike Courier Ltd | Transport & logistics | 2026 |
| Eco WMT Group Limited | Wholesale & retail | 2018 |
| Ecobright Energy Group Ltd | Construction | 2025 |
| Ecogbinstall Ltd | Construction | 2025 |
| Ecomexpresss Ltd | Wholesale & retail | 2026 |
| Ecoprobuild Limited | Construction | 2018 |
| Ecoshine Supplies Ltd | Wholesale & retail | 2024 |
| Ed's Loft Conversions Ltd | Construction | 2016 |
| Edcroft Limited | Financial services | 2022 |
| Edens Gate Global Ltd | Manufacturing | 2019 |
| Edgelinks Residents Association Limited | Households | 1971 |
| Edgington Way Ltd | Real estate | 2025 |
| Edgold's Services Limited | Health & social care | 2013 |
| EDITION7 Limited | Other services | 2020 |
| Edpro Consultants Limited | Education | 2024 |
| Edth Ltd | Health & social care | 2024 |
| Education Partnership Group Limited | Education | 2023 |
| Edward Milton and Co Ltd | Information & communication | 2015 |
| Edward Seago Limited | Administrative & support | 2010 |
| Edwards Recycling Holdings Limited | Administrative & support | 2015 |
| Edwards Recycling Limited | Administrative & support | 2008 |
| Edwards Waste Paper Limited | Other services | 1975 |
| EEF Trading Limited | Information & communication | 2011 |
| Efel Construction Limited | Construction | 2024 |
| Egerton-Smith Limited | Administrative & support | 2013 |
| Eggfree Cake Box Debden Ltd | Wholesale & retail | 2024 |
| Egmont Bay Ltd | Extraterritorial | 2014 |
| EGR Services (Essex) Limited | Construction | 2013 |
| EH Performance Ltd | Wholesale & retail | 2023 |
| Eight Rocks Ltd | Hospitality | 2017 |
| EJG Management Ltd | Real estate | 2016 |
| EK Pierson House Plymouth Ltd | Real estate | 2022 |
| Ekcelence Ltd | Information & communication | 2017 |
| Eken Press Ltd | Information & communication | 2010 |
| Ekuitas (Northumberland) Ltd | Real estate | 2023 |
| Ekuitas PLC | Financial services | 2022 |
| Ekuitas Ventures II Limited | Real estate | 2022 |
| Ekuitas Ventures Ltd | Real estate | 2022 |
| EL Cafecito Limited | Hospitality | 2015 |
| EL Paredon Clothing Ltd | Wholesale & retail | 2024 |
| El&El Barbers Limited | Other services | 2022 |
| ELA Education Group Limited | Education | 2019 |
| Elachi Ltd | Hospitality | 2025 |
| Eladi Limited | Professional & scientific | 2007 |
| Elamga Limited | Information & communication | 2019 |
| Elan Apartments Management Company Limited | Households | 2022 |
| Elan Vitae Limited | Wholesale & retail | 2026 |
| Eldar Management Limited | Real estate | 1999 |
| Eldar Properties Ltd | Real estate | 2005 |
| Eldon Construction Ltd | Construction | 2021 |
| Electric and GAS Compare Limited | Administrative & support | 2024 |
| Electric UA Ltd | Construction | 2016 |
| Electrical Test&Trace Ltd | Construction | 2022 |
| Electrozone Ltd | Construction | 2014 |
| Elegant Carpentry and Maintenance Ltd | Construction | 2021 |
| Elegant Exhibits Ltd | Administrative & support | 2024 |
| Elementz Academy CIC | Arts & recreation | 2019 |
| Elementz Dance Company Limited | Arts & recreation | 2025 |
| Elevie Aesthetics Ltd | Health & social care | 2025 |
| ELI Beautician Limited | Other services | 2019 |
| Elif Property Management Ltd | Real estate | 2025 |
| Elite Commando Fitness Essex Limited | Arts & recreation | 2016 |
| Elite Design&Build Services Ltd | Construction | 2019 |
| Elite Golf Breaks Limited | Administrative & support | 2025 |
| Elite Group Solutions Ltd | Extraterritorial | 2022 |
| Elite Guarding (UK) Ltd | Administrative & support | 2014 |
| Elite Management (London) Ltd | Real estate | 2017 |
| Elite People Partners Ltd | Administrative & support | 2020 |
| Elite Resin Driveways Ltd | Construction | 2022 |
| Elite Taxis Epping Forest Ltd | Transport & logistics | 2024 |
| Elkybros Ltd | Professional & scientific | 2023 |
| Elland Property Investments Limited | Real estate | 2026 |
| Ellicott Construction Ltd | Construction | 2009 |
| Ellis Pover Partnership LLP | | 2008 |
| Ellis Pover Partnership Properties Limited | Real estate | 2024 |
| ELM Park London Ltd | Real estate | 2025 |
| Elmax Construction Ltd | Construction | 2020 |
| Eloe Beauty Ltd | Other services | 2024 |
| Elphick Property Consultants Ltd | Administrative & support | 2021 |
| Elsaloe Innovations Ltd | Wholesale & retail | 2017 |
| Elsharkawy Group Limited | Financial services | 2025 |
| Elsie Freeman Limited | Hospitality | 2020 |
| Eltham Leaseback Limited | Real estate | 2019 |
| ELY Law LLP | | 2008 |
| ELY Management Services Limited | Administrative & support | 1991 |
| Elysium Holdings London Ltd | Real estate | 2020 |
| Emadaniel Construction Ltd | Construction | 2024 |
| Embreathe Limited | Health & social care | 2022 |
| Emco Ortho Ltd | Wholesale & retail | 2013 |
| Emcp Management Consulting Limited | Professional & scientific | 2015 |
| EMF Electrical Services Ltd | Construction | 2018 |
| Emgs Recruitment Ltd | Administrative & support | 2022 |
| Emilianna Properties Limited | Real estate | 2020 |
| Emily Grace Florist Limited | Wholesale & retail | 2018 |
| Emira Ltd | Hospitality | 2022 |
| Emma-Jane Limited | Wholesale & retail | 1989 |
| Emmanuel Paul Composites Ltd | Manufacturing | 2016 |
| Emmelia Ltd | Transport & logistics | 2023 |
| Empathy Carer Ltd | Health & social care | 2022 |