| Echelon Media Ltd | Professional & scientific | 2022 |
| Echelon Medical Services Ltd | Health & social care | 2023 |
| Echo District Ltd | Information & communication | 2025 |
| Echovale Ltd | Wholesale & retail | 2025 |
| Echovibe Ltd | Wholesale & retail | 2025 |
| Eclectic Furniture Ltd | Wholesale & retail | 2020 |
| Eclipse (Brentwood) Management Company Limited | Households | 2018 |
| Eclipse Business Consulting LLP | | 2009 |
| Eclipse Property Solutions Ltd | Construction | 2007 |
| Eclipse Studios Limited | Professional & scientific | 1999 |
| Eco Answers Limited | Wholesale & retail | 2010 |
| Eco Electrical Design and Installation Ltd | Construction | 2018 |
| Eco Farm Asia Limited | Administrative & support | 2010 |
| Eco Foundations and Frames Ltd | Construction | 2025 |
| Eco Home TEC Ltd | Construction | 2019 |
| Eco Rinse Energy Solutions Limited | Administrative & support | 2024 |
| Eco Services Group Ltd | Administrative & support | 2018 |
| Eco TEC M & E Ltd | Construction | 2020 |
| Eco-Creative Skills Centre CIC | Manufacturing | 2019 |
| Eco-Elegant Cleaning Fairies Ltd | Administrative & support | 2018 |
| Eco-Filtration Limited | Wholesale & retail | 1995 |
| Eco-Pulse (Essex) Limited | Construction | 2024 |
| Ecobuild Renewables Limited | Construction | 2024 |
| Ecofin Ltd | Wholesale & retail | 2025 |
| Ecogreen Plumbing & Heating Services Limited | Construction | 2020 |
| Ecohill Renewable Energy Solutions Limited | Construction | 2010 |
| Ecomaldon Limited | Energy | 2024 |
| Ecosmart Property Solutions Ltd | Construction | 2025 |
| Ecotech Power Limited | Construction | 2008 |
| Ecotherm Plumbing & Renewables Limited | Construction | 2026 |
| ECS Carpet Care Ltd | Administrative & support | 2013 |
| ECS Estate Maintenance Ltd | Administrative & support | 2021 |
| Ecstatic Dance Events Ltd | Administrative & support | 2025 |
| ED Ruben & Co Ltd | Administrative & support | 2018 |
| Eddycam Ltd | Information & communication | 2019 |
| EDE & Wilkinson Limited | Construction | 1998 |
| Edel Education Consultancy Ltd | Professional & scientific | 2026 |
| Edelmanos Limited | Manufacturing | 2022 |
| Eden Arts Collective Limited | Arts & recreation | 2025 |
| Eden Digital Dental Laboratory Ltd | Manufacturing | 2017 |
| Edenborough Ltd | Information & communication | 2016 |
| Edgardo Ltd | Arts & recreation | 2025 |
| Edgbaston House Ltd | Real estate | 2022 |
| Edgehill Property Investments Limited | Real estate | 2024 |
| Edino Limited | Other services | 2020 |
| Editha House Management Company Limited | Households | 2016 |
| Edmegh Limited | Health & social care | 2020 |
| Edmund Dobrowolski Limited | Construction | 2003 |
| Edovioplus Ltd | Professional & scientific | 2024 |
| EDS Property Invest Ltd | Real estate | 2026 |
| Edss Legal Ltd | Professional & scientific | 2024 |
| EDU Legal Ltd | Professional & scientific | 2025 |
| EDUCATE2INNOVATE Limited | Education | 2012 |
| Education Training Group Limited | Education | 2019 |
| Educational Heights Limited | Transport & logistics | 2008 |
| Eduviz Limited | Education | 2014 |
| Edvardas Ltd | Administrative & support | 2020 |
| EDW Management Ltd | Other services | 2024 |
| EER Care Services Ltd | Administrative & support | 2016 |
| EF Creative Studios Ltd | Professional & scientific | 2022 |
| EF Number Plates Ltd | Wholesale & retail | 2021 |
| EF Roofing Ltd | Construction | 2018 |
| Efam Air Ltd | Construction | 2022 |
| Efam Heat Limited | Construction | 2025 |
| Effect Studio Limited | Professional & scientific | 2024 |
| Efficiencies Ltd | Construction | 2013 |
| Efficient Cleaning Services Limited | Administrative & support | 2000 |
| Efficient Site Services Ltd | Administrative & support | 2022 |
| EFG Consultant Ltd | Information & communication | 2025 |
| EFK Care Services Ltd | Public administration | 2025 |
| Egas Mechanical Limited | Construction | 2015 |
| EGG Angling Limited | Information & communication | 2024 |
| EGG Estates Limited | Administrative & support | 2024 |
| EGG Films Limited | Information & communication | 2009 |
| EGG Productions Ltd | Wholesale & retail | 2020 |
| EGG Rentals Ltd | Real estate | 2024 |
| EGG Socials Ltd | Information & communication | 2024 |
| EGP Properties Ltd | Real estate | 2021 |
| Egremont Care Ltd | Health & social care | 2025 |
| Egret Partnership LLP | | 2020 |
| Egret Properties Limited | Real estate | 2020 |
| EH Thai Limited | Hospitality | 2018 |
| EHB Solutions Limited | Financial services | 2013 |
| EHF Properties Ltd | Real estate | 2025 |
| Eightfold Ltd | Real estate | 2018 |
| Eirenox Limited | Wholesale & retail | 2019 |
| Eirwen Ltd | Professional & scientific | 2019 |
| EJ Property Investments Limited | Real estate | 2020 |
| EJ Smith Geological Consulting Limited | Professional & scientific | 2025 |
| EJB Logistix Ltd | Transport & logistics | 2025 |
| EJB Promotions and Events Ltd | Administrative & support | 2024 |
| EJN Construction Ltd | Construction | 2014 |
| Ejps & Sons Limited | Construction | 2023 |
| Ekccho Studios Limited | Information & communication | 2025 |
| EKO Law Ltd | Professional & scientific | 2023 |
| Eko-Davies Properties Ltd | Real estate | 2026 |
| EKP Construction Ltd | Construction | 2025 |
| Ektc Ltd | Construction | 2025 |
| EL Mundo Magico Limited | Administrative & support | 2000 |
| EL ROI DID IT Limited | Professional & scientific | 2026 |