| Editor at Large Limited | Information & communication | 2017 |
| EDR Care Limited | Public administration | 2013 |
| EDU First UK Ltd | Education | 2025 |
| Edwards Accounts Services Ltd | Professional & scientific | 2015 |
| EE Autos Ltd | Wholesale & retail | 2025 |
| Eggcellence London Ltd | Hospitality | 2023 |
| Egnite Flavors Ltd | Wholesale & retail | 2018 |
| Eigen Trading Ltd | Information & communication | 2026 |
| Ekam Food & Wines Ruislip Ltd | Wholesale & retail | 2025 |
| EL Toro Waste Management Ltd | Water & waste | 2025 |
| ELA Merite Solutions Ltd | Construction | 2015 |
| Elamosi Limited | Real estate | 2013 |
| Elan Artists Ltd | Arts & recreation | 2023 |
| Elara Living Ltd | Households | 2025 |
| Electricians Naeis Ltd | Construction | 2025 |
| Electrify.Solar Ltd | Information & communication | 2024 |
| ELECTRONICS247 Ltd | Wholesale & retail | 2007 |
| Elektron London Ltd | Construction | 2025 |
| Elemental Paving & Landscaping Ltd | Administrative & support | 2025 |
| Elen&Aks Ltd | Wholesale & retail | 2021 |
| Elevate Foster Care Ltd | Health & social care | 2022 |
| Elevate Traffic Solutions Ltd | Transport & logistics | 2020 |
| Eleven Oneone Consulting Ltd | Professional & scientific | 2025 |
| Elgin Construction Ltd | Construction | 2015 |
| Elite -TEC Autoservice Centre Ltd | Wholesale & retail | 2015 |
| Elite Air Compressor Solutions Ltd | Manufacturing | 2025 |
| Elite Alloy Repairs Ltd | Wholesale & retail | 2022 |
| Elite Civil & Building Contractors Ltd | Construction | 2022 |
| Elite Commerce Unique Ltd | Wholesale & retail | 2026 |
| Elite Cosmetic Surgery Ltd | Health & social care | 2022 |
| Elite Impact Limited | Professional & scientific | 2003 |
| Elite Logistics Services Ltd | Transport & logistics | 2021 |
| Elite Medica Ltd | Wholesale & retail | 2020 |
| Elite Millie Nails Ltd | Other services | 2022 |
| Elite Roofing & Build Limited | Construction | 2026 |
| Elite Specialist Cleaning Group Ltd | Administrative & support | 2020 |
| Elite Technical Development 9 Limited | Education | 2023 |
| Elixir International Magazine Limited | Information & communication | 2011 |
| Elixir International Publishing Limited | Information & communication | 2014 |
| ELL & MAC Ltd | Wholesale & retail | 2021 |
| Ella Complete Ltd | Wholesale & retail | 2025 |
| Ellamare Limited | Construction | 2018 |
| Ellie Hartley Flowers Limited | Wholesale & retail | 2009 |
| Elliotts Consulting Limited | Professional & scientific | 2021 |
| Ellis Roofing Specialists Limited | Construction | 2024 |
| ELM Park Court Investment Co. Limited | Households | 1968 |
| Elmmora Ltd | Wholesale & retail | 2024 |
| Elsakka Ltd | Wholesale & retail | 2025 |
| Elur Limited | Hospitality | 2021 |
| Elux Property Ltd | Real estate | 2023 |
| Elwill Consulting Limited | Professional & scientific | 2020 |
| Elyon Services Limited | Information & communication | 2018 |
| Elysium Fitness Ltd | Arts & recreation | 2021 |
| EM Sustainability Services Ltd | Professional & scientific | 2011 |
| Emani Limited | Wholesale & retail | 2003 |
| Ematia Limited | Information & communication | 2023 |
| Emaxd Ltd | Health & social care | 2026 |
| Emce Contract Services Ltd | Administrative & support | 2022 |
| Emco 87 Ltd | Transport & logistics | 2017 |
| Emcquaid Consultancy Ltd | Information & communication | 2025 |
| Emcshared Ltd | Information & communication | 2023 |
| Emerald City Builders Limited | Construction | 2015 |
| Emerald Driveways & Patios Ltd | Construction | 2020 |
| Emerald House Green Engineering Ltd. | Construction | 1997 |
| Emerald House Green Environments Limited | Construction | 2019 |
| Emerald House Group Limited | Construction | 2019 |
| Emerald Space Limited | Real estate | 2019 |
| EMF Electrical Engineers and Consultants Ltd | Professional & scientific | 2014 |
| Eminence Rent-A-Car Ltd | Administrative & support | 2012 |
| Emis Construct Ltd | Construction | 2019 |
| Emma Louise Fishing Ltd | Agriculture & fishing | 2017 |
| Emma Wong Psychological Practice Limited | Health & social care | 2021 |
| Empire Commercial Investments Limited | Real estate | 2022 |
| Empire FM Solutions Ltd | Transport & logistics | 2025 |
| EMT System Ltd | Professional & scientific | 2019 |
| EMX Valeting Centre Ltd | Administrative & support | 2023 |
| En@Wood Ltd | Manufacturing | 2017 |
| ENC 85 Limited | Construction | 2016 |
| Encasa Homes Ltd | Real estate | 2024 |
| Encoa Investments Ltd | Information & communication | 2022 |
| END Titles Limited | Information & communication | 2021 |
| Enfield Distribution Ltd | Wholesale & retail | 2012 |
| Enfield Tattoo Company Limited | Arts & recreation | 2017 |
| Enforca Technologies Ltd | Information & communication | 2023 |
| Engrave R US Ltd | Wholesale & retail | 2023 |
| Enigma Engineering Services Limited | Construction | 1997 |
| Enjoysmart Technology Co., Ltd | Administrative & support | 2020 |
| Enka Holdings Limited | Manufacturing | 2022 |
| Enrolmate Limited | Education | 2024 |
| Enviroblue Ltd | Water & waste | 2024 |
| EPF Home Improvements Limited | Construction | 2022 |
| EPH Interiors Limited | Construction | 2013 |
| Epicafri Limited | Arts & recreation | 2020 |
| Eplanent Limited | Wholesale & retail | 2020 |
| EPM Investments Ltd | Real estate | 2019 |
| EPM Property Solutions Ltd | Real estate | 2023 |
| Epsilon Services Limited | Wholesale & retail | 2019 |
| Epula Limited | Hospitality | 2014 |
| Epula West Hampstead Ltd | Hospitality | 2015 |
| EQR Investments Ltd | Real estate | 2017 |