| EEG Properties Limited | Real estate | 2017 |
| EEH Services Limited | Professional & scientific | 2024 |
| EF Groceries Ltd | Wholesale & retail | 2024 |
| EFA Mining Limited | Mining & quarrying | 2025 |
| Effective Results Limited | Administrative & support | 2007 |
| Effer Ventures Limited | Professional & scientific | 2021 |
| Efficienci Ltd | Information & communication | 2019 |
| Efficient Concepts Limited | Professional & scientific | 2013 |
| Efficient Repairs & Installation Ltd | Construction | 2021 |
| EFI Aviation Limited | Administrative & support | 1999 |
| EFI Limited | Manufacturing | 1997 |
| Efoodies Ltd | Hospitality | 2026 |
| EFS Solutions Ltd | Wholesale & retail | 2019 |
| Efss Services Limited | Other services | 2014 |
| Efwpm Ltd | Financial services | 2009 |
| EG Norwich Limited | Hospitality | 2019 |
| Eg.Law Ltd | Professional & scientific | 2015 |
| EGA Industry Ltd | Wholesale & retail | 2020 |
| EGA Skin Ltd | Information & communication | 2026 |
| Egage Storage Limited | Transport & logistics | 2018 |
| EGC Electrical Ltd | Construction | 2011 |
| EGE Holdings Ltd | Construction | 2026 |
| Egentic UK Limited | Wholesale & retail | 2020 |
| Egerton Roche Limited | Real estate | 1995 |
| Egerton-Jones Plumbing and Property Maintenance Ltd | Construction | 2023 |
| EGG Architecture Ltd | Professional & scientific | 2018 |
| Eggcup Web Design Limited | Information & communication | 2013 |
| Eghc Ltd | Financial services | 2018 |
| EGP Projects Ltd | Real estate | 2015 |
| Egremont Consulting Limited | Professional & scientific | 2016 |
| EHE 1 Limited | Financial services | 2013 |
| Ehealth Inspire Ltd | Information & communication | 2020 |
| EHI Services Ltd | Wholesale & retail | 2023 |
| Eido Design Limited | Professional & scientific | 2009 |
| EIGHTATE8 Ltd | Real estate | 2023 |
| Eighteighteight Arts Limited | Other services | 2024 |
| Eisa Enterprises Limited | Wholesale & retail | 2018 |
| Eisa Services Limited | Wholesale & retail | 2015 |
| EIT Construction Limited | Information & communication | 2026 |
| EJ Stats Limited | Professional & scientific | 2010 |
| EJ Supply Ltd | Wholesale & retail | 2023 |
| EJA Cruz Limited | Wholesale & retail | 2021 |
| EJB Roofing Contractors Ltd | Construction | 2023 |
| EJE Asbestos Consultancy Ltd | Professional & scientific | 2022 |
| Ejee Associates Ltd. | Transport & logistics | 2020 |
| EJJ Trustee Limited | Financial services | 2015 |
| EJM Events Limited | Administrative & support | 2015 |
| Ejmc Holdings Ltd | Real estate | 2024 |
| EJW Financial Planning Limited | Financial services | 2026 |
| EK Mortgages Limited | Financial services | 2022 |
| EK Onkar Estates Limited | Real estate | 2021 |
| Ekagra Limited | Administrative & support | 2015 |
| Ekal Ltd. | Financial services | 2009 |
| Ekalma Ltd | Real estate | 2021 |
| Ekocycle Limited | Water & waste | 2019 |
| EL Financial Services Ltd | Financial services | 2019 |
| EL Resto Dent Ltd | Health & social care | 2023 |
| El-Basty Medical Ltd | Health & social care | 2023 |
| ELA Catering Ltd | Hospitality | 2021 |
| Elaborate Health Ltd | Professional & scientific | 2021 |
| Elara Finance Ltd | Financial services | 2025 |
| Elarose Ltd | Real estate | 2025 |
| Elbaro Limited | Wholesale & retail | 2023 |
| ELC JV LLP | | 2014 |
| Elca Properties Limited | Real estate | 2000 |
| Elderdwell CIC | Other services | 2017 |
| Elderidge Limited | Wholesale & retail | 1986 |
| Eldo Foods Ltd | Wholesale & retail | 2019 |
| Eldwich Investments Limited | Real estate | 2026 |
| Eleanor MAY Beauty Limited | Other services | 2019 |
| Eleanor Torbati Ltd | Manufacturing | 2021 |
| Elearning Studios Ltd | Information & communication | 2012 |
| Elec-Tech Electrical Services Limited | Construction | 2000 |
| Elec-Tech Holdings Ltd | Real estate | 2016 |
| Elecspeed Solutions Limited | Construction | 2014 |
| Elect-Ric Norfolk Ltd | Construction | 2025 |
| Electchase Limited | Information & communication | 1997 |
| Electech Solutions (East) Limited | Manufacturing | 2004 |
| Electradoor Ltd | Manufacturing | 2025 |
| Electric Automotive Ltd | Wholesale & retail | 2021 |
| Electric Foundry Ltd | Manufacturing | 2018 |
| Electric Heaters Limited | Professional & scientific | 1999 |
| Electric Innovations (Norfolk) Ltd | Construction | 2023 |
| Electric Keys Ltd | Extraterritorial | 2024 |
| Electric Workshop Tattoo Ltd | Arts & recreation | 2014 |
| Electrical & Mechanical Controls Holdings Ltd | Financial services | 2018 |
| Electrical & Property Ltd | Construction | 2020 |
| Electrical Diversity Rope Access Limited Limited | Administrative & support | 2017 |
| Electrical Emergency Repairs Ltd | Construction | 2026 |
| Electrical Logistics and Services (UK) Limited | Construction | 2016 |
| Electrical Rewind Services Limited | Professional & scientific | 1990 |
| Electrical Safety (London) Ltd. | Extraterritorial | 2003 |
| Electrical Safety (Midlands) Limited | Extraterritorial | 2002 |
| Electrical Safety (Northern) Ltd. | Extraterritorial | 2003 |
| Electrical Safety (Southern) Limited | Professional & scientific | 2001 |
| Electrical Safety Group Limited | Construction | 1999 |
| Electrical Systems Group Ltd | Construction | 2021 |
| Electrical Testing (Holdings) Limited | Professional & scientific | 1999 |
| Electrical Testing Limited | Professional & scientific | 1990 |
| Electrico Infrastructure Limited | Construction | 2023 |