| Effective Business Events Limited | Administrative & support | 1997 |
| Effective Business Travel Limited | Administrative & support | 1992 |
| Effective Financial Solutions Limited | Professional & scientific | 2017 |
| Effective Touch Limited | Information & communication | 2003 |
| Efjp Global Ltd | Administrative & support | 2017 |
| EFM Healthcare Inc Limited | Professional & scientific | 2023 |
| EFS Food Ltd | Hospitality | 2022 |
| EGB Builders Limited | Construction | 2011 |
| Egerpride Limited | Administrative & support | 1995 |
| Egham Sushi Ltd | Hospitality | 2024 |
| Egley Road Limited | Households | 2016 |
| Egov Limited | Health & social care | 2018 |
| EHE Futures Ltd | Information & communication | 2026 |
| EHS Capital Limited | Financial services | 2022 |
| Ehvil Dissentients Limited | Extraterritorial | 1950 |
| EIL Accountancy Services Ltd | Professional & scientific | 2017 |
| EIM Group Ltd | Information & communication | 2022 |
| EJ Starling Services Limited | Professional & scientific | 2011 |
| Ekpen Services Ltd | Administrative & support | 2025 |
| EL Ahrairah Ltd | Real estate | 2021 |
| Elayr Group Ltd | Wholesale & retail | 2025 |
| Elco Holdings Ltd | Financial services | 2026 |
| Elco Investment Ltd | Real estate | 2026 |
| Elderly Homecare Services Ltd | Health & social care | 2022 |
| Electric Blue Films Limited | Information & communication | 2009 |
| Electric Brands Limited | Administrative & support | 2020 |
| Electricalse Ltd | Energy | 2024 |
| ELECTRICS4U Limited | Construction | 2025 |
| Electroflight Ltd | Professional & scientific | 2026 |
| Electroglass Holdings Limited | Professional & scientific | 2003 |
| Electron Beam Processes Limited | Manufacturing | 1966 |
| Elegant Beauty by Lucy Limited | Other services | 2025 |
| Elemar Padel Limited | Administrative & support | 2026 |
| Elemental Green Ventures Limited | Financial services | 2024 |
| Elephant and Castle Projects Limited | Construction | 2018 |
| Elephant Design & Build Ltd | Construction | 2022 |
| Elevate & FLY Ltd | Administrative & support | 2018 |
| Elevate Bridal Limited | Arts & recreation | 2014 |
| Elevate Sports Brands Limited | Arts & recreation | 2020 |
| Elevate-Trade Ltd | Wholesale & retail | 2024 |
| Elevated View Ltd | Real estate | 2017 |
| Eleven Brunswick Road Management Limited | Households | 1987 |
| ELEVEN08 Label Ltd | Wholesale & retail | 2020 |
| Elijah Holdings Ltd | Financial services | 2019 |
| Elimax Carpentry Ltd | Construction | 2020 |
| Elite Drywall & Ceilings Ltd | Construction | 2026 |
| Elite Edge OFF Ice Ltd | Education | 2023 |
| Elite Electrical & Property Services Ltd | Manufacturing | 2013 |
| Elite Ocean Ltd | Wholesale & retail | 2023 |
| Elite Plumbing and Heating Surrey Limited | Construction | 2024 |
| Elite Transport & Travels Ltd | Transport & logistics | 2024 |
| Ellis + Company Limited | Professional & scientific | 2023 |
| Ellis Clark Media Ltd | Information & communication | 2023 |
| Ellrin Consulting Ltd | Information & communication | 2024 |
| Ellsworth Property Investment Limited | Real estate | 2010 |
| ELM Road Properties Limited | Real estate | 2005 |
| Elmacneice Limited | Information & communication | 2026 |
| Elmbridge Court Management Company Limited | Households | 2019 |
| Elmfield Residential Home Limited | Health & social care | 1996 |
| Elor Wyse Ltd | Arts & recreation | 2025 |
| Elpidos Limited | Professional & scientific | 2024 |
| Elstone Electricals Limited | Manufacturing | 2022 |
| Eltham Heights (2021) Limited | Households | 2021 |
| ELY House Property Management Ltd | Real estate | 2017 |
| Elysian Body Ltd | Other services | 2025 |
| Elzetco Limited | Construction | 2025 |
| Emar Building Service Ltd | Construction | 2017 |
| Emberwise Ltd | Other services | 2024 |
| Emblen Equestrian Ltd | Agriculture & fishing | 2025 |
| Emblewood Finance Ltd | Professional & scientific | 2026 |
| Embur Ltd | Wholesale & retail | 2023 |
| Emei Consulting Limited | Professional & scientific | 2021 |
| Emerald Media Limited | Other services | 1996 |
| Emerj Global Ltd | Wholesale & retail | 2024 |
| EMF Trading London Limited | Wholesale & retail | 2026 |
| Emhodges Ltd. | Other services | 2016 |
| Emma Johns CAB Ltd | Transport & logistics | 2026 |
| Emmanuel House (Truro) Limited | Real estate | 2011 |
| Emmaus Transformation Trust | Other services | 1998 |
| Emoquo Limited | Information & communication | 2010 |
| Emorphic Limited | Professional & scientific | 2016 |
| Emotive Insight Consultancy Ltd | Professional & scientific | 2022 |
| Empire Group Properties Ltd | Real estate | 2021 |
| Empire Pool Supplies Ltd | Wholesale & retail | 2020 |
| Empowerment Coach Ltd | Professional & scientific | 2020 |
| Empyrean Talons Ltd | Wholesale & retail | 2025 |
| Emsol UK Limited | Information & communication | 2008 |
| EN Recruit Limited | Extraterritorial | 2011 |
| Enalion Beauty Limited | Other services | 2009 |
| Enchantment Wise Ltd | Extraterritorial | 2024 |
| End-To-End Supply Chain Limited | Professional & scientific | 2015 |
| Endila Limited | Extraterritorial | 2019 |
| Energiraven Limited | Administrative & support | 2001 |
| Energise & More Ltd | Wholesale & retail | 2025 |
| Energovis Limited | Professional & scientific | 2024 |
| Energy Assess UK Ltd | Real estate | 2007 |
| Enerton Limited | Construction | 2021 |
| Engaged Capital Ltd | Real estate | 2019 |
| Engineeringness Ltd | Professional & scientific | 2024 |
| Engmann Limited | Health & social care | 2022 |