| Elizabeth Rose Steele Limited | Financial services | 2025 |
| Elka GAS & Electrics Ltd | Energy | 2020 |
| Ella Walks Ltd | Information & communication | 2023 |
| Ella Withey Ltd | Professional & scientific | 2026 |
| Elliedor Limited | Manufacturing | 2019 |
| Ellison Institute of Technology, Oxford Limited | Professional & scientific | 2021 |
| Ellison SPV 2 Limited | Professional & scientific | 2024 |
| Ellison SPV 3 Limited | Professional & scientific | 2024 |
| Ellison SPV 4 Limited | Professional & scientific | 2025 |
| Ellison SPV 5 Limited | Professional & scientific | 2025 |
| Ellison SPV 6 Limited | Professional & scientific | 2025 |
| Elliston Carpentry Limited | Construction | 2005 |
| Ellrose Asian Snacks Ltd | Hospitality | 2024 |
| ELM Tree Motor Company Limited | Wholesale & retail | 2001 |
| ELM Trees Educate LLP | | 2023 |
| Elmore Community Services | Health & social care | 2001 |
| Eloquent Bear Ltd | Information & communication | 2018 |
| ELR Homes AB Ltd | Real estate | 2021 |
| ELR Short LET Ltd | Hospitality | 2025 |
| ELR Short Lets Abingdon Ltd | Hospitality | 2025 |
| Elrhomes Ltd | Real estate | 2023 |
| Elsdon MB Limited | Professional & scientific | 2023 |
| Elsfield Manor Limited | Real estate | 1976 |
| Elsky Limited | Professional & scientific | 2019 |
| ELT Publishing Professionals Limited | Administrative & support | 2018 |
| ELT Teacher 2 Writer Ltd | Information & communication | 2012 |
| Elton Fields Management Company Limited | Households | 2020 |
| Eltronis UK Ltd | Manufacturing | 2019 |
| Elvic Limited | Information & communication | 2003 |
| Elwood & Co Limited | Real estate | 2008 |
| Elzi Ltd | Professional & scientific | 2014 |
| EM Engineering Solutions Limited | Professional & scientific | 2026 |
| EM Normandie UK Limited | Education | 2018 |
| Emaar Construction Limited | Construction | 2009 |
| Eman Taxis Ltd | Transport & logistics | 2025 |
| Embedded Antenna Design Limited | Manufacturing | 2003 |
| Embedec Technologies Limited | Professional & scientific | 2021 |
| Embri Limited | Information & communication | 2024 |
| Embs Community College Limited | Administrative & support | 1988 |
| Emeralddrift Ltd | Wholesale & retail | 2025 |
| Emergency Plumber Drainage and Heating Experts Ltd | Construction | 2025 |
| Emerging Technology Partnership Services Ltd | Extraterritorial | 2023 |
| Emerial Merchant & Commodities Ltd | Wholesale & retail | 2023 |
| Emery Employment Law Ltd | Professional & scientific | 2020 |
| Emfcomp Ltd | Information & communication | 2013 |
| EMG Event Solutions Ltd | Professional & scientific | 2024 |
| Emijem Ltd | Professional & scientific | 2014 |
| Emirates Transport & Travel Ltd | Wholesale & retail | 2025 |
| Emissions R US Limited | Financial services | 2011 |
| Emit Labs Ltd | Professional & scientific | 2025 |
| Emma Engers Associates Limited | Administrative & support | 2010 |
| Emma Jonnes London Ltd | Manufacturing | 2025 |
| Emmanuel Christian School Oxford | Education | 1990 |
| Emmaus Oxford | Wholesale & retail | 1997 |
| Emmyabb Limited | Wholesale & retail | 2024 |
| EMN Property Limited | Hospitality | 2015 |
| Emofi Limited | Professional & scientific | 2024 |
| Empathy House Cleaning Ltd | Administrative & support | 2024 |
| Empathy Sustainability Limited | Professional & scientific | 2016 |
| Emperor UK Topco Limited | Professional & scientific | 2020 |
| Emperorworld Co. Ltd | Wholesale & retail | 2019 |
| Empire Crest Limited | Real estate | 2017 |
| Empire Grooming Ltd | Other services | 2025 |
| Empire Homes Limited | Construction | 1987 |
| Empower International Consultants Ltd | Professional & scientific | 2014 |
| Empowered AIM Ltd | Professional & scientific | 2020 |
| Empowered Engineering Limited | Professional & scientific | 2019 |
| Empowered Evolution Limited | Professional & scientific | 2025 |
| Empowering Leadership Ltd | Education | 2021 |
| Emris Limited | Professional & scientific | 2019 |
| EMU Music Ltd | Information & communication | 2008 |
| EMV Video Production Ltd | Information & communication | 2025 |
| EMW Franchising Ltd | Administrative & support | 2010 |
| EN Pointe Events Ltd | Arts & recreation | 2021 |
| ENA Biologics, Ltd. | Manufacturing | 2026 |
| Enabling Solutions PVT Limited | Professional & scientific | 2022 |
| Enapro Ltd | Real estate | 2026 |
| Enara BIO Limited | Professional & scientific | 2016 |
| Enatek Holdings Limited | Financial services | 2025 |
| ENC of Oxford Limited | Administrative & support | 2005 |
| Enchoice, UK Limited | Information & communication | 2022 |
| Encouragement Appreciation & Support Services Limited | Information & communication | 2018 |
| Endeavour Newco 12 Limited | Financial services | 2020 |
| Endowment Estates Limited | Financial services | 2017 |
| Endson Consulting Ltd | Professional & scientific | 2014 |
| Energence Ltd | Information & communication | 2008 |
| Energise Africa Guarantee Limited | Financial services | 2019 |
| Energy Profile Limited | Other services | 2026 |
| Energymyway (Oxford) Ltd | Construction | 2016 |
| Energyplm Ltd | Professional & scientific | 2023 |
| Enesyn Ltd | Professional & scientific | 2020 |
| Enfieldslettingsresidential Limited | Real estate | 2015 |
| Enfunction Limited | Information & communication | 2016 |
| Engaging Climate Ltd | Professional & scientific | 2023 |
| Engdal Holdings Limited | Professional & scientific | 2014 |
| Engimax Ltd | Professional & scientific | 2025 |
| Engin Commodities Limited | Information & communication | 2024 |
| Engineered Motion Ltd | Construction | 2025 |
| Englong Education Ltd | Education | 2013 |
| Englong Limited | Education | 2000 |