| Eagle's Garage Ltd | Wholesale & retail | 2021 |
| Eaglestate Limited | Households | 1979 |
| Eanmat Property Services Limited | Construction | 2025 |
| Earnshaw Technology Ltd | Arts & recreation | 2018 |
| Earthlec Ltd | Construction | 2006 |
| Earthlec Plumbing and Heating Co Ltd | Construction | 2024 |
| Easi Building and Maintenance Limited | Administrative & support | 2019 |
| East Barnet Community Festival | Arts & recreation | 1996 |
| East Barnet Old Grammarians Limited | Arts & recreation | 1961 |
| East Barnet School | Education | 2011 |
| East Finchley Tailors Ltd | Other services | 2023 |
| East Midlands Capital Ltd | Professional & scientific | 2020 |
| East Street Creative Limited | Administrative & support | 2008 |
| East Sussex Drilling Services Ltd | Construction | 1997 |
| East-West Design & Build Limited | Administrative & support | 2014 |
| East-West Property Developments Limited | Administrative & support | 2014 |
| Eastbyeastwest Limited | Wholesale & retail | 2008 |
| Eastgate Street Ltd | Real estate | 2019 |
| Eastrock Limited | Wholesale & retail | 1997 |
| Easy IT Recycle Limited | Information & communication | 2024 |
| Easylife Group Limited | Extraterritorial | 2020 |
| Easylife Holdings Limited | Professional & scientific | 2000 |
| Easylife Limited | Wholesale & retail | 2004 |
| Easylife.Com Limited | Extraterritorial | 2004 |
| Easylogix Ltd | Transport & logistics | 2023 |
| Easyprobate Ltd | Professional & scientific | 2025 |
| Eaton Properties Ltd | Households | 2019 |
| Eauvolution Limited | Manufacturing | 2018 |
| EB Communications Ltd | Professional & scientific | 2013 |
| Ebel One Ltd | Construction | 2016 |
| EBI Barnet Motors Limited | Wholesale & retail | 2021 |
| EBR83 Limited | Administrative & support | 2026 |
| Ebru Investments Limited | Real estate | 2026 |
| EBV Spice Ltd | Hospitality | 2025 |
| EC & EC Property Ltd | Real estate | 2023 |
| EC Maintenance Ltd | Construction | 2023 |
| EC1 Campus Limited | Administrative & support | 2024 |
| EC1 Catering Limited | Hospitality | 2023 |
| ECB Motors Ltd | Wholesale & retail | 2025 |
| Echoes Property Ltd | Real estate | 2026 |
| Echofine Limited | Information & communication | 1995 |
| Echorama Limited | Professional & scientific | 1993 |
| Ecile Holdings Ltd | Real estate | 2019 |
| Eco Bloom Essentials Ltd | Wholesale & retail | 2025 |
| Eco Catalin Ltd | Construction | 2025 |
| Eco House Comfort Ltd. | Wholesale & retail | 2012 |
| Eco House Living Ltd | Real estate | 2018 |
| Eco Mobility Aids Ltd | Wholesale & retail | 2025 |
| Ecognition Services Limited | Information & communication | 2007 |
| Ecom Marketing Solutions Ltd | Wholesale & retail | 2023 |
| Ecomech Services Ltd | Construction | 2023 |
| Economic and Social Cohesion Laboratory Limited | Professional & scientific | 2011 |
| Ecorix Limited | Information & communication | 2026 |
| Ecotectural Limited | Professional & scientific | 2021 |
| Ecru Investments Ltd | Professional & scientific | 2024 |
| Eddge Mortgages Limited | Financial services | 2019 |
| Eddiesmethod Ltd | Wholesale & retail | 2019 |
| Eden Landscapes Herts Ltd | Administrative & support | 2012 |
| Eden Nuts Ltd | Wholesale & retail | 2024 |
| Eden Roots Development Co Ltd | Construction | 2025 |
| Edenrage Media Limited | Administrative & support | 2015 |
| Edge Energy Performance Company Limited | Professional & scientific | 2014 |
| Edinburgh Capital Limited | Real estate | 2012 |
| Edinburgh FK Capital Ltd | Hospitality | 2024 |
| Edinburgh Trading 2GO Limited | Hospitality | 2025 |
| Edith KAY Properties Limited | Construction | 2022 |
| Edro Holdings Limited | Real estate | 2025 |
| Edru Holdings Limited | Professional & scientific | 2023 |
| Edumente Academy Limited | Other services | 2019 |
| Edward Rising Limited | Wholesale & retail | 2016 |
| Edwards Plant & Tool Hire Ltd | Administrative & support | 2001 |
| Edwards Property Limited | Administrative & support | 1995 |
| EEP Consulting Ltd | Professional & scientific | 2019 |
| EES Data Limited | Information & communication | 2002 |
| Eess Catering Ltd | Hospitality | 2025 |
| EF Golden Brush Ltd | Construction | 2024 |
| EF Ventures LLP | | 2021 |
| Effectio Ltd | Information & communication | 2018 |
| Efficient Group Projects Limited | Construction | 2024 |
| Effitas Properties Limited | Financial services | 2013 |
| Efkeria Ltd | Construction | 2022 |
| Eftec Aero International Limited | Administrative & support | 2013 |
| Eftec Aero Limited | Other services | 2009 |
| Egee Limited | Hospitality | 2024 |
| Egos Consultancy Limited | Professional & scientific | 2009 |
| Egos Legal Limited | Professional & scientific | 2019 |
| Ehsaaan Ltd | Wholesale & retail | 2026 |
| Ehyc Holdings Ltd | Wholesale & retail | 2024 |
| Eifleague Ltd | Arts & recreation | 2025 |
| Eight Healthcare Limited | Health & social care | 2023 |
| Eire Group Ltd | Wholesale & retail | 2025 |
| EK Care Ltd | Health & social care | 2012 |
| EK Outreach Services Limited | Education | 2018 |
| Ekigan Limited | Other services | 2021 |
| EKJ Properties Limited | Real estate | 2022 |
| Ekologic Consulting Ltd | Professional & scientific | 2023 |
| EL Pharma Ltd | Wholesale & retail | 2021 |
| El-Mugamar Pharma Limited | Wholesale & retail | 2024 |
| Elanchart Limited | Hospitality | 2018 |
| Elancroft Limited | Households | 1999 |