| Enders & Co Ltd | Manufacturing | 2020 |
| Endotherapy Ltd | Health & social care | 2014 |
| Energy Online Ltd. | Energy | 2000 |
| Energy Recruitment Services Limited | Administrative & support | 2025 |
| Energy Risk Consultants Ltd | Administrative & support | 2005 |
| Enfl Enterprises Limited | Information & communication | 2008 |
| Engage Scientific Solutions Limited | Professional & scientific | 2008 |
| Engas (UK) Ltd | Energy | 2014 |
| Engas Global Ltd | Energy | 2021 |
| Engenix Ltd | Professional & scientific | 2024 |
| England-Clarke Associates Limited | Professional & scientific | 2006 |
| England-Clarke LLP | | 2004 |
| ENOUGH2DO Ltd | Professional & scientific | 2012 |
| Ensign Leisure Limited | Arts & recreation | 1998 |
| Enterprise Services Group Limited | Water & waste | 1994 |
| Entreves Limited | Professional & scientific | 2018 |
| Enviga Geothermal Limited | Construction | 2020 |
| Enviga Holdings Limited | Financial services | 2025 |
| Environmental Monitoring Services Limited | Professional & scientific | 2007 |
| Envision Market Access Solutions Limited | Extraterritorial | 2015 |
| Envision Pharma Bidco Limited | Professional & scientific | 2016 |
| Envision Pharma Finco Limited | Professional & scientific | 2016 |
| Envision Pharma Group Limited | Professional & scientific | 2016 |
| Envision Pharma Holdco Limited | Professional & scientific | 2013 |
| Envision Pharma Limited | Professional & scientific | 2002 |
| Envision Pharma Midco Limited | Professional & scientific | 2016 |
| Envision Pharma Trustee Limited | Professional & scientific | 2016 |
| Envitia Ltd | Information & communication | 1989 |
| Eosos Ltd | Professional & scientific | 2017 |
| EPA Technology Limited | Professional & scientific | 1993 |
| Epik Group LLP | | 2020 |
| Epinion Research UK Limited | Professional & scientific | 2014 |
| Epoch Entertainment Limited | Information & communication | 2005 |
| Epoch Heritage CIC | Information & communication | 2023 |
| Equicentric Limited | Wholesale & retail | 2003 |
| Equine Priorities Ltd | Agriculture & fishing | 2019 |
| Equipped Sports Ltd | Wholesale & retail | 2025 |
| Equiprop Ltd | Real estate | 2022 |
| Equity Ocean Ltd | Financial services | 2021 |
| Ergodevelopment Ltd | Construction | 2023 |
| Erin and Christopher Holdings Ltd | Health & social care | 2021 |
| ERP Consultancy Limited | Information & communication | 2008 |
| Escape to Luxury Ltd | Administrative & support | 2025 |
| ESK Healthcare Limited | Health & social care | 2016 |
| ESL Consultancy Services Ltd | Information & communication | 2018 |
| Esmie Limited | Wholesale & retail | 2009 |
| Esponilla Healthsavers Ltd. | Health & social care | 2016 |
| ESS Team Ltd | Professional & scientific | 2026 |
| Essential Imaging Ltd | Information & communication | 2019 |
| Essentially Different Limited | Information & communication | 2000 |
| Essexcaringhands Ltd | Health & social care | 2022 |
| Essexprimecare Limited | Health & social care | 2021 |
| Estate Matters Limited | Professional & scientific | 2023 |
| Esty Properties Limited | Real estate | 2021 |
| Etheridge Real Estate Limited | Real estate | 2021 |
| Ethicare Solutions Ltd | Public administration | 2025 |
| Ethos Edibles Limited | Hospitality | 2020 |
| Euesden Limited | Professional & scientific | 2024 |
| Eunoia Community CIC | Health & social care | 2026 |
| Eunoia Health Ltd | Health & social care | 2026 |
| Eureka Project Management UK Ltd | Professional & scientific | 2016 |
| Euro-Pean Flooring Solutions Ltd | Construction | 2009 |
| Europe Project Management Limited | Professional & scientific | 2003 |
| European Management Services Ltd | Professional & scientific | 2019 |
| European Vitreoretinal Society Global (Evrs Global) Limited | Professional & scientific | 2026 |
| Eurovia Infrastructure Limited | Manufacturing | 2010 |
| Eurovia Roadstone Limited | Construction | 2000 |
| Eurovia Specialist Treatments Limited | Construction | 2009 |
| Eurovia UK Limited | Construction | 1994 |
| Eustongate Limited | Information & communication | 2014 |
| EV Horizons Ltd | Construction | 2016 |
| Evan Properties Ltd | Real estate | 2013 |
| Evans & Galloway Properties Limited | Real estate | 2020 |
| Evans Software Services Ltd. | Information & communication | 1997 |
| Event Venues Limited | Administrative & support | 2013 |
| Evercleaning Ltd | Administrative & support | 2018 |
| Evergreen Contract Gardeners Limited | Administrative & support | 1994 |
| Evergreen Marketing Group Ltd | Professional & scientific | 2018 |
| Evergreen Resources Ltd | Financial services | 2024 |
| Evergreen Systems Limited | Health & social care | 2008 |
| Every Day Heathcare Group Ltd | Health & social care | 2026 |
| Everything in Construction Limited | Construction | 2017 |
| Everything Mushroom Ltd | Manufacturing | 2025 |
| Everything Universe Ltd | Information & communication | 2025 |
| EVH 2 Developments Limited | Real estate | 2024 |
| EVH 3 Developments Limited | Real estate | 2024 |
| EVH 4 Developments Limited | Real estate | 2024 |
| EVH 5 Developments Limited | Real estate | 2024 |
| EVH 6 Developments Limited | Real estate | 2025 |
| EVH 7 Developments Limited | Construction | 2026 |
| EVH Developments Limited | Construction | 2024 |
| EVH Management Limited | Construction | 2025 |
| Evidence Finco Limited | Financial services | 2020 |
| Evidence Midco Limited | Financial services | 2020 |
| Evidence Scientific Solutions Limited | Professional & scientific | 2008 |
| Evidence Topco Limited | Financial services | 2020 |
| Evidencia Scientific Search and Selection Ltd | Administrative & support | 2012 |
| EVL Engineering Ltd | Manufacturing | 2016 |
| EVM Direct Ltd. | Wholesale & retail | 2012 |
| EVM Group Limited | Financial services | 2020 |