| Ecolec Solutions Ltd | Construction | 2024 |
| Ecombarn Ltd | Wholesale & retail | 2024 |
| Econen Limited | Professional & scientific | 2019 |
| Economy Budget Removals Ltd | Transport & logistics | 2014 |
| Ecoris Consulting Ltd | Professional & scientific | 2025 |
| Ecrebo Limited | Information & communication | 2009 |
| ECS Automotive UK Limited | Extraterritorial | 2012 |
| ECS Corporate Holdings Limited | Professional & scientific | 2011 |
| Ecwb Properties Ltd | Real estate | 2025 |
| Ecylaa Ltd | Information & communication | 2026 |
| ED Lite Ltd | Wholesale & retail | 2026 |
| ED Mehmed Limited | Professional & scientific | 2024 |
| EDA Transport Ltd | Transport & logistics | 2018 |
| EDC Lingua Ltd | Education | 2022 |
| Edcam Limited | Professional & scientific | 2015 |
| Eddie English Studios Ltd | Information & communication | 2026 |
| Eden Beauty House Limited | Other services | 2015 |
| Eden Publishing 2023 Ltd | Information & communication | 2023 |
| Eden Recruitment Solutions Limited | Administrative & support | 2012 |
| Eden Rose Property Ltd | Real estate | 2025 |
| Edgar's Curious Stories Ltd | Information & communication | 2019 |
| Edge 27 Ltd | Construction | 2014 |
| Edge Consult UK LLP | | 2008 |
| Edge Decorating Contracts Ltd | Construction | 2022 |
| Edge Decorating Services Ltd | Construction | 2013 |
| Edgware Business Improvement District Limited | Other services | 2023 |
| Edhita Limited | Real estate | 2024 |
| Edi&Ale Transport Ltd | Transport & logistics | 2025 |
| Edison House Group Ltd | Information & communication | 2015 |
| Edison House Trading Limited | Wholesale & retail | 2015 |
| Edison Solar 1 Limited | Construction | 2013 |
| Edit (EA) Limited | Other services | 2022 |
| Edko Trans Ltd | Transport & logistics | 2018 |
| Edmerson Ltd | Wholesale & retail | 2026 |
| Edmund Management Ltd | Administrative & support | 2021 |
| Edncosmetics Ltd | Wholesale & retail | 2026 |
| Edon Contractors Ltd | Construction | 2020 |
| Edoople Ltd | Education | 2025 |
| Edrm Limited | Professional & scientific | 2020 |
| Edubond Group Ltd | Information & communication | 2026 |
| Educated Appointments Ltd | Administrative & support | 2019 |
| Education Services International Ltd | Education | 2023 |
| Educoda Ltd | Information & communication | 2025 |
| Eduflex Academix Ltd | Education | 2026 |
| Eduflex Group Ltd | Financial services | 2026 |
| Edward Capon Services Limited | Professional & scientific | 2025 |
| Edward Fraser Developments Ltd | Construction | 2025 |
| Edward Harpley Ltd | Manufacturing | 1998 |
| Edward LE BAS Limited | Professional & scientific | 1962 |
| Edward LE BAS Properties Limited | Real estate | 1952 |
| Edwards Autos Limited | Wholesale & retail | 2024 |
| Edwards Aviation Consultants Ltd | Wholesale & retail | 2023 |
| Edwards Electrical (Ipswich) Ltd | Construction | 2015 |
| Edwards Properties Ipswich Ltd | Real estate | 2022 |
| EDY TRANSPORT4 Ltd | Transport & logistics | 2023 |
| Eelath Thaaragai Ltd | Other services | 2026 |
| EES Suffolk Ltd | Construction | 2023 |
| EF Commerce Ltd | Wholesale & retail | 2026 |
| Efficientax Ltd | Professional & scientific | 2013 |
| Eficon Ltd | Administrative & support | 2022 |
| EFL Properties Limited | Real estate | 2022 |
| EFM Financials Limited | Professional & scientific | 2023 |
| EFW International Sales Limited | Construction | 2021 |
| EG Jewellery Ltd | Wholesale & retail | 2021 |
| Egidijus Abromavicius Building Limited | Construction | 2025 |
| Egidijus Transport Limited | Transport & logistics | 2016 |
| EH Electrical (East Anglia) Limited | Construction | 2019 |
| EH Property (East Anglia) Limited | Real estate | 2021 |
| EHI Group Ltd | Real estate | 2024 |
| Eight Financial Limited | Administrative & support | 2022 |
| EIT Creative Solutions Ltd | Information & communication | 2025 |
| EJ Pearce Limited | Professional & scientific | 2016 |
| EJL Landholdings Limited | Construction | 2016 |
| EKB Cleaning Ipswich Ltd | Administrative & support | 2022 |
| EL Lobo Cycles Ltd | Manufacturing | 2018 |
| EL Lobo Studios Ltd | Manufacturing | 2025 |
| EL ROI Transition Partners Ltd | Professional & scientific | 2021 |
| EL Tres Promotions CIC | Education | 2023 |
| Elacey Limited | Construction | 2016 |
| Eland Healthcare Ltd | Administrative & support | 2021 |
| ELB (Suffolk) Ltd | Hospitality | 2019 |
| ELC Animal Therapy Ltd | Agriculture & fishing | 2022 |
| ELC Property Ltd | Real estate | 2024 |
| Elder Global Limited | Professional & scientific | 2025 |
| Elderease Homecare Ltd | Public administration | 2024 |
| Eleanor Robinson Ltd | Arts & recreation | 2021 |
| Electri-Call (Ipswich) Ltd | Construction | 2018 |
| Electric House Management Limited | Households | 2017 |
| Electric Soup Records Ltd | Arts & recreation | 2015 |
| Electrical Solar Innovations Limited | Administrative & support | 2023 |
| Electricare Contractors Limited | Construction | 2010 |
| Electrician in Ipswich Ltd | Construction | 2016 |
| Electron Diagnostics Limited | Professional & scientific | 2020 |
| Electron Plus Design Limited | Professional & scientific | 2018 |
| Electronics Repair Ipswich Ltd | Administrative & support | 2016 |
| Elecworx Limited | Construction | 2016 |
| Elemax Limited | Administrative & support | 2025 |
| Element 79 Limited | Arts & recreation | 2003 |
| Element Security (UK) Ltd | Administrative & support | 2025 |
| Elemental Home Education Ltd | Education | 2024 |