| Echo Star Limited | Other services | 2018 |
| Eclipse Cards Ltd | Wholesale & retail | 2021 |
| Eclipze Consulting Ltd | Hospitality | 2023 |
| Eclmaten Properties Ltd | Real estate | 2022 |
| ECM Electrical Contractors Ltd | Construction | 2021 |
| ECM Electrical Ltd | Construction | 2021 |
| ECM Group Holdings Ltd | Construction | 2021 |
| ECM Mechanical Ltd | Construction | 2025 |
| ECM Protection Ltd | Administrative & support | 2025 |
| ECM Renewables Ltd | Construction | 2025 |
| ECM Smart Technology Ltd | Construction | 2021 |
| Eco-Climate Limited | Information & communication | 2001 |
| Ecommerce Retail Group Ltd | Wholesale & retail | 2024 |
| Ecoqlip Ltd | Professional & scientific | 2019 |
| Ecosse Limited | Agriculture & fishing | 2003 |
| Ecosun Limited | Professional & scientific | 2024 |
| ED Carleton Corporate Relocations Ltd | Hospitality | 2021 |
| EDC Property Group Limited | Real estate | 2025 |
| Eden House Medico-Legal Limited | Professional & scientific | 2023 |
| Eden Lifestyle Ltd | Health & social care | 2025 |
| Eden Pharmacy Limited | Wholesale & retail | 2000 |
| Edge Wear Ltd | Wholesale & retail | 2024 |
| Edgware Care Limited | Health & social care | 2023 |
| Edgware Hair Designers Ltd | Other services | 2023 |
| Edifice World Limited | Real estate | 2020 |
| EDP Group Ltd | Health & social care | 2022 |
| EDU Psychology Limited | Health & social care | 2015 |
| Eduathlete Group Ltd | Education | 2025 |
| Educate Tutor Ltd | Education | 2013 |
| Educational Centre for Objective Reporting on International Conflict and Peace | Education | 2025 |
| Educational Psychology With Tamara Roiter Limited | Education | 2024 |
| Eduvibe Limited | Education | 2023 |
| Edvimo Limited | Real estate | 2025 |
| Edward and Mary Limited | Professional & scientific | 2023 |
| Eecoptical Ltd | Health & social care | 2012 |
| EEW Employees Trustees Limited | Extraterritorial | 2024 |
| Efarmogi Ltd | Professional & scientific | 2014 |
| Efco International Limited | Wholesale & retail | 1984 |
| Efes Holdings Limited | Financial services | 2018 |
| Effess Holdings Limited | Financial services | 2015 |
| EFG Automotive Ltd | Wholesale & retail | 2025 |
| Egerton Close (Bushey) Management Company Ltd | Households | 2012 |
| Eight Influences Ltd | Education | 2020 |
| Eight P.C. Limited | Real estate | 1975 |
| Eikon Enterprises Limited | Professional & scientific | 2011 |
| Eisberg Invest Limited | Manufacturing | 2024 |
| Ejigini Limited | Wholesale & retail | 2018 |
| Ekam 12 Limited | Financial services | 2019 |
| Ekam One Limited | Real estate | 2019 |
| Ekam Property Investment Limited | Real estate | 2018 |
| Ekam Two Limited | Real estate | 2019 |
| Ekea Investments Ltd | Real estate | 2020 |
| EL Faraon Ltd | Wholesale & retail | 2019 |
| El-Farouq Foundation | Education | 1996 |
| El-Roi Billions Investments Ltd. | Wholesale & retail | 2023 |
| ELA Studio Ltd | Wholesale & retail | 2021 |
| Elecline Limited | Construction | 2010 |
| Electrical Contracts Management Ltd | Construction | 2019 |
| Elements Rituals and Spa Limited | Real estate | 2019 |
| Elereka Cosmetics Limited | Other services | 2022 |
| Elevareo Ltd | Professional & scientific | 2026 |
| Elevate Advisory Services Ltd | Information & communication | 2024 |
| Elevate Realty Ventures Ltd | Construction | 2024 |
| Elevon Property Management Limited | Households | 2026 |
| Elight Food and Beverages Ltd | Hospitality | 2020 |
| Elight Investment Ltd | Real estate | 2021 |
| Elite Contractors & Decorators Ltd | Construction | 2021 |
| Elite Developers Ltd | Construction | 2024 |
| Elite Fitness Coaching Ltd | Education | 2022 |
| Elite Football Tours Ltd | Administrative & support | 2025 |
| Elite GB Associates Ltd | Professional & scientific | 2025 |
| Elite Make UP Academy Ltd | Extraterritorial | 2020 |
| Elite Unit Cars Limited | Transport & logistics | 2025 |
| Elivon Ltd | Information & communication | 2026 |
| Elizabeth Odachi Abu(Nee OBE) Ltd | Households | 2025 |
| ELK Carpentry Limited | Manufacturing | 2020 |
| Ellcod Ltd | Other services | 2012 |
| Ellidan Limited | Financial services | 2021 |
| Elliot Tech Limited | Information & communication | 2020 |
| Elliot, Woolfe & Rose Audit and Advisory Services LLP | | 2021 |
| Elliot, Woolfe & Rose Limited | Professional & scientific | 2019 |
| Ellipsis Events Ltd | Arts & recreation | 2024 |
| Ellwood (Chalfont) Management Limited | Households | 2006 |
| ELM Plumbing and Heating Ltd | Construction | 2026 |
| Elmore House RTM Company Limited | Households | 2020 |
| Elmore Property Co Limited | Real estate | 1956 |
| Elms Road Limited | Real estate | 2007 |
| Elmside Properties Limited | Real estate | 1998 |
| Elmtree Luxury Pet Hotel Limited | Hospitality | 2013 |
| Elmtree Pet Transport Limited | Transport & logistics | 2025 |
| Elstree Equipment Storage Ltd | Real estate | 2019 |
| Elstree Van Centre Ltd | Wholesale & retail | 2019 |
| Eltoo Consulting Ltd | Information & communication | 2022 |
| Elvis Trans Ltd | Transport & logistics | 2019 |
| Elviss Trans Ltd | Transport & logistics | 2019 |
| Elvitone Services UK Ltd | Transport & logistics | 2023 |
| Elxr Ltd | Manufacturing | 2023 |
| ELY&SHATTERING2025 Limited | Construction | 2025 |
| Elysian Stanmore Operating Company Limited | Real estate | 2015 |
| Elysium Surveyors LLP | | 2014 |