| ECA Properties Limited | Real estate | 2017 |
| ECB Estates Limited | Real estate | 2023 |
| Echelon Commerce Ltd | Wholesale & retail | 2026 |
| Echo Brand Design Limited | Professional & scientific | 2004 |
| Eclipse Technology Services Limited | Information & communication | 1999 |
| ECM Buildings Ltd | Construction | 2025 |
| Eco Dwellings Ltd | Real estate | 2024 |
| Eco IT Services Ltd | Information & communication | 2025 |
| Eco Unique Construction Ltd | Construction | 2021 |
| Ecolab Services | Professional & scientific | 1985 |
| ED Chef Ltd | Hospitality | 2026 |
| ED Property Services Ltd | Construction | 2024 |
| Edac IP Ltd | Administrative & support | 2014 |
| Edaza Ltd | Hospitality | 2020 |
| Edeke Consultants Ltd | Health & social care | 2014 |
| Edgehill Road Limited | Real estate | 2018 |
| Edgie Eats Ltd | Manufacturing | 2022 |
| Edgie Eats Wholesale Ltd | Manufacturing | 2025 |
| Edinburgh House Residents Association Limited | Households | 1987 |
| Editors Network Limited | Professional & scientific | 2005 |
| Edizsoft Limited | Wholesale & retail | 2020 |
| EDJ Art Ltd | Health & social care | 2016 |
| Edme Properties Ltd | Real estate | 2023 |
| Edmund Williams Limited | Professional & scientific | 2013 |
| EDS Decorating Ltd | Construction | 2019 |
| Education Insights Ltd | Education | 2021 |
| Education Sub-Saharan Africa | Education | 2016 |
| Edupublishingplus Limited | Education | 2017 |
| Edward Kitchen Fitter Solution Ltd | Construction | 2026 |
| Edward Paul & Co Limited | Construction | 1958 |
| Eemal Ltd | Information & communication | 2020 |
| Eesp Global Group Ltd | Transport & logistics | 2020 |
| Efcsoft Ltd | Information & communication | 2021 |
| Effective Pest Solutions Ltd | Manufacturing | 2023 |
| Efficient Energy Solutions (EES) Limited | Construction | 2022 |
| Efilmz Limited | Information & communication | 2018 |
| EFM Close Limited | Households | 2024 |
| EFM Imports Ltd | Wholesale & retail | 2019 |
| Eftr Ltd | Wholesale & retail | 2017 |
| Egmont Builders Limited | Construction | 2026 |
| Egreen International Limited | Manufacturing | 1984 |
| Eimann Limited | Professional & scientific | 2025 |
| Eimk Consulting Limited | Information & communication | 2023 |
| Eiratech Robotics UK Limited | Transport & logistics | 2020 |
| Eisea Technologies Limited | Professional & scientific | 2009 |
| EJ Francis Homes Ltd | Construction | 2024 |
| EK Scaffolding Ltd | Construction | 2019 |
| Ekum Investment Limited | Real estate | 2023 |
| Ekum Property Management LLP | | 2023 |
| EL Mohri Civil Engineering Ltd | Construction | 2019 |
| Eldergrove Interiors Supply Ltd | Wholesale & retail | 2025 |
| ELE Nails Ltd | Other services | 2023 |
| Eleanor Boutique Ltd | Wholesale & retail | 2024 |
| Eleanor Buckley Ltd | Real estate | 2025 |
| Eleanor Grace Publishing Ltd | Wholesale & retail | 2013 |
| Electramech UK Ltd | Construction | 1988 |
| Electric Hippo Ltd | Construction | 2023 |
| Electric Liquid Ltd | Health & social care | 2025 |
| Electric Sea Racing Limited | Arts & recreation | 2020 |
| Electric Slime Games Limited | Information & communication | 2023 |
| Electrical One Ltd | Manufacturing | 2022 |
| Electriqual Ltd | Education | 2025 |
| Electro-Rentals Limited | Manufacturing | 1932 |
| Electrosmith Ltd | Energy | 2015 |
| Electrotest (UK) Limited | Construction | 1992 |
| Elegant Party Limited | Wholesale & retail | 2022 |
| Elegant Pearl Fashion Studio Ltd | Other services | 2025 |
| Elenium Services Ltd | Professional & scientific | 1998 |
| Elephant Visual Ltd | Professional & scientific | 2021 |
| ELEV8 Scaffolding Services Limited | Construction | 2025 |
| ELEV8AI Limited | Wholesale & retail | 2024 |
| Elevate Change Ltd | Professional & scientific | 2026 |
| Eleven 15 Ltd | Information & communication | 2015 |
| Elevtech Engineering Ltd | Construction | 2025 |
| Elfficiency Ltd | Energy | 2008 |
| Eline Retail Ltd | Wholesale & retail | 2021 |
| Elite AV Limited | Construction | 2013 |
| Elite Concierge Services Ltd | Other services | 2018 |
| Elite Electrical Contracting Limited | Construction | 1999 |
| Elite Extensions Ltd | Other services | 2022 |
| Elite Financials Limited | Professional & scientific | 2023 |
| Elite MC Managed Services Ltd | Administrative & support | 2022 |
| Elite Perpetual Learning Limited | Public administration | 2023 |
| Elite Professional Cleaning Services Ltd | Administrative & support | 2026 |
| Elite Security Centre Limited | Administrative & support | 2003 |
| Elite Smart Energy Solutions Ltd | Construction | 2024 |
| Elitegate International Ltd | Education | 2017 |
| Elitz IT & Accounts Limited | Professional & scientific | 1997 |
| Elitz Limited | Education | 2020 |
| Elixir LDN Ltd | Other services | 2022 |
| Elizabeth and Rose Design Ltd | Arts & recreation | 2016 |
| Elizabeth Court (Burgess Hill) Management Co. Limited | Households | 2018 |
| Ella and Okta Care Services Limited | Health & social care | 2025 |
| Ellaness Limited | Education | 2015 |
| Ellesmore (Construction) Limited | Construction | 1998 |
| Elmairth Limited | Information & communication | 2016 |
| Elmar Properties 1 Ltd | Real estate | 2015 |
| Elmar Properties 2 Ltd | Real estate | 2016 |
| Elmbridge Environmental Services Ltd | Other services | 2016 |
| Elmbridge Tree Services Limited | Other services | 2003 |