| Elizabeth Rushton Ltd | Administrative & support | 2014 |
| Elkk Solutions Limited | Professional & scientific | 2017 |
| Elldee Property Services Limited | Real estate | 1988 |
| Ellesfield Psychotherapy Limited | Health & social care | 2025 |
| Elmbridge Tyre Services Limited | Extraterritorial | 1962 |
| Elmwood Fire Limited | Administrative & support | 2024 |
| Elsmore Consultancy Services Limited | Professional & scientific | 2019 |
| Elsted Capital Limited | Professional & scientific | 2016 |
| Elton Management Services Limited | Professional & scientific | 2010 |
| Elvene Ltd | Administrative & support | 2026 |
| Em-Powered Fitness & Personal Training Ltd | Arts & recreation | 2019 |
| Emco Ventures Ltd | Real estate | 2025 |
| Emerging Markets Finance Partners Limited | Financial services | 2020 |
| Emily Fallon Coaching Limited | Other services | 2020 |
| Emma Hooton Limited | Professional & scientific | 2010 |
| Emmaus Hampshire | Health & social care | 1999 |
| EMP Properties Limited | Real estate | 2010 |
| Empire Wealth Financial Services Limited | Financial services | 2025 |
| Enavant Consulting Ltd | Professional & scientific | 2024 |
| Enchantis Limited | Households | 2001 |
| Encore Youth Theatre Community Interest Company | Arts & recreation | 2010 |
| END Level Events Ltd | Arts & recreation | 2014 |
| Endeavour Services London Limited | Professional & scientific | 2022 |
| Endurance OIL and GAS Ltd | Professional & scientific | 2018 |
| Energy CM Limited | Information & communication | 2022 |
| Energy Developers Limited | Professional & scientific | 2013 |
| Energy Manage CIC | Health & social care | 2016 |
| Energyscout Limited | Information & communication | 2015 |
| Energyview Consulting Limited | Administrative & support | 2014 |
| Engage-Ai Ltd | Information & communication | 2022 |
| English Project @ Winchester Limited | Education | 2007 |
| Enigmatic Studios Limited | Information & communication | 2014 |
| Entacy Limited | Professional & scientific | 2003 |
| Entambeni Investments Ltd | Real estate | 2023 |
| Enterprise SK (GB) Ltd | Hospitality | 2020 |
| Enterprising PR Limited | Professional & scientific | 2016 |
| Entotek BIO Consulting Limited | Professional & scientific | 2014 |
| Enviro Waste (EU) Limited | Administrative & support | 2019 |
| Enviromental Marine Solutions Ltd | Professional & scientific | 2015 |
| Envoy Technology Ltd | Information & communication | 2020 |
| Enzyme Products Ltd | Manufacturing | 2019 |
| Eo-Cref Limited | Professional & scientific | 2023 |
| Ephraims Solutions Limited | Professional & scientific | 2013 |
| Epixon Limited | Administrative & support | 2015 |
| Epta Catering Limited | Hospitality | 2007 |
| EQ Acoustics Ltd | Wholesale & retail | 2000 |
| Erfinder Technologies Limited | Professional & scientific | 2019 |
| ERG Stepup C.I.C. | Education | 2026 |
| Erivy Accounting Limited | Professional & scientific | 2024 |
| ERS Highway Design Ltd | Professional & scientific | 2019 |
| Escape 2 Limited | Professional & scientific | 1996 |
| Escoda Ltd | Health & social care | 2017 |
| Escutcheon Limited | Professional & scientific | 2005 |
| ESG Display Limited | Professional & scientific | 2004 |
| Essential Jewellery Ltd | Wholesale & retail | 1997 |
| Essex Inns Ltd | Hospitality | 2012 |
| Etaj Ltd | Financial services | 2017 |
| Etrawell Limited | Professional & scientific | 1986 |
| ETU Moana Ltd | Professional & scientific | 2018 |
| Eucalyptus Consulting Ltd | Administrative & support | 2017 |
| European Background Limited | Professional & scientific | 1998 |
| European Nutripharm Limited | Health & social care | 2003 |
| European Town Twinning Advisors Limited | Professional & scientific | 2023 |
| Eurorient (Soton) Ltd | Real estate | 2015 |
| EVA Holistic Therapy Ltd | Health & social care | 2025 |
| Evalian Holdings Limited | Financial services | 2020 |
| Evalian Limited | Information & communication | 2018 |
| Evenlode Partners Ltd | Financial services | 1998 |
| Event 1 Limited | Information & communication | 1999 |
| Everest Clean Ltd | Administrative & support | 2021 |
| Everest in the Alps - Events Limited | Administrative & support | 2018 |
| Everest Spark Cleaning Ltd | Administrative & support | 2025 |
| Everist Ltd | Information & communication | 2024 |
| Everoak Developments Limited | Real estate | 2026 |
| Evervest Limited | Real estate | 2023 |
| Every Frame Media Ltd | Information & communication | 2024 |
| Every Need Ltd | Education | 2023 |
| Everycare (Central Hants) Ltd | Health & social care | 2010 |
| Everything Green Energy Limited | Construction | 2025 |
| EVF Trustees Limited | Professional & scientific | 2018 |
| Evia Consultancy Limited | Professional & scientific | 2026 |
| Evil Fish Ltd | Other services | 2024 |
| Evohome & Garden Ltd | Wholesale & retail | 2025 |
| Evohome Improvements Ltd | Construction | 2023 |
| Evohome Maintenance Ltd | Construction | 2025 |
| Evohome Property Ltd | Real estate | 2025 |
| Evoliner Ltd | Wholesale & retail | 2014 |
| Evolving Networks Limited | Information & communication | 2008 |
| EVP Consulting Limited | Professional & scientific | 2021 |
| EWF Holdings Ltd | Financial services | 2017 |
| EWO (Winchester) Ltd | Financial services | 2025 |
| Ex-Div Limited | Information & communication | 2017 |
| EXCELL2GROW Limited | Professional & scientific | 2019 |
| Excessful Dynamics Ltd | Professional & scientific | 2018 |
| Exchange 1 2 Bidco Limited | Real estate | 2025 |
| Exclusive Double Glazing Ltd | Construction | 2014 |
| Executive Exteriors Limited | Construction | 2001 |
| Executive Search Partnership Limited | Administrative & support | 2004 |
| Eximius Consulting Ltd | Professional & scientific | 2014 |
| Eximp World Ltd | Manufacturing | 2025 |