| Engineering Project Management Consulting Ltd | Professional & scientific | 2012 |
| Engineering Project Services Ltd | Professional & scientific | 2007 |
| Engineering Resource Group Limited | Extraterritorial | 2015 |
| Engineering Services (Bristol) Limited | Professional & scientific | 2004 |
| Engineering Support Solutions Limited | Professional & scientific | 2007 |
| Engineering Works Limited | Wholesale & retail | 2022 |
| Engio Fashion Limited | Wholesale & retail | 2025 |
| England's Finest Ltd | Construction | 2025 |
| English County Projects Limited | Real estate | 2017 |
| English for Health Professionals Ltd | Education | 2014 |
| English for Healthcare Professionals Ltd | Education | 2014 |
| English for Nurses Limited | Education | 2011 |
| Engr Company Ltd | Wholesale & retail | 2025 |
| Engrave IT Online Limited | Wholesale & retail | 2016 |
| Enhance Architecture Limited | Professional & scientific | 2017 |
| Enhance Housing Limited | Real estate | 2023 |
| Enhance Logistics Ltd | Transport & logistics | 2025 |
| Enhanced Awareness Limited | Professional & scientific | 2023 |
| Enhanced Barbershop Ltd | Other services | 2022 |
| Enhanced by Phoebe Limited | Other services | 2025 |
| Enhanced Masters of Art and Technology Limited | Arts & recreation | 2017 |
| Enhanced Technology Solutions Ltd | Information & communication | 2020 |
| ENI2004 Limited | Education | 2014 |
| Enic Olles Ltd | Wholesale & retail | 2025 |
| Enif Bess Limited | Energy | 2021 |
| Enigma Surveying Services Ltd | Professional & scientific | 2024 |
| Enitor Ltd | Financial services | 2020 |
| Enjoy Church Ltd | Other services | 2012 |
| Enjoy Marketing Limited | Wholesale & retail | 2018 |
| Enlightened Group Ltd | Arts & recreation | 2025 |
| Enlightened Lighting Limited | Arts & recreation | 1999 |
| Enlightened Training Ltd. | Professional & scientific | 2014 |
| Enlist Recruitment Limited | Administrative & support | 2019 |
| Enliten Architectural Lighting Ltd | Manufacturing | 2004 |
| Enlx Ltd | Arts & recreation | 2025 |
| Enmar Consulting Limited | Information & communication | 2013 |
| Enmar Letting Ltd | Hospitality | 2021 |
| ENN Sports Limited | Arts & recreation | 2025 |
| Ennerdale Court RTM Company Limited | Households | 2009 |
| Ennis Property Investment Limited | Real estate | 2024 |
| Ennismore Development Ltd | Extraterritorial | 2024 |
| Enopartner Ltd | Other services | 2023 |
| ENP Properties Ltd | Real estate | 2022 |
| Enquip Software Limited | Information & communication | 2023 |
| Enriched Creative Limited | Professional & scientific | 2014 |
| Enriching Healthcare Ltd | Health & social care | 2021 |
| Enrico & Matei Ltd | Transport & logistics | 2023 |
| Ensel Limited | Hospitality | 2015 |
| Ensera UK Bidco Ltd | Financial services | 2022 |
| Ensh Law Ltd | Professional & scientific | 2018 |
| Ensilicated Technologies Ltd | Professional & scientific | 2021 |
| Enso Capital Limited | Real estate | 2020 |
| Enso Education Limited | Education | 2017 |
| Enso Group Ltd | Hospitality | 2017 |
| Enso Martial Arts Limited | Wholesale & retail | 2015 |
| Enso Shower Limited | Manufacturing | 2025 |
| Ensono Digital Limited | Information & communication | 2010 |
| Ensono Limited | Information & communication | 1996 |
| Ensono Opco Holdings Limited | Financial services | 2016 |
| Enssen (Europe) Ltd | Wholesale & retail | 2015 |
| Enssen (London) Ltd | Wholesale & retail | 2014 |
| Entee Electrical Limited | Manufacturing | 2011 |
| Enterprise Business Services (UK) Limited | Administrative & support | 2011 |
| Enterprise Commercial Services Group Ltd | Wholesale & retail | 2009 |
| Enterprise Computer Systems Limited | Information & communication | 1992 |
| Enterprise Law Limited | Professional & scientific | 2006 |
| Enterprise Modelling Ltd | Information & communication | 2024 |
| Enterprise Properties Bristol Limited | Hospitality | 2009 |
| Enterprising Learning Ltd | Education | 2020 |
| ENTERTAIN2TRAIN Limited | Information & communication | 2013 |
| Enthuse Developments Ltd | Real estate | 2025 |
| Enti Fitness Ltd | Other services | 2024 |
| Entire Building Services Ltd | Construction | 2016 |
| Entire Damp Solutions Limited | Construction | 2026 |
| Entire Mechanical Services Limited | Construction | 2023 |
| Entire Workshop Solutions Limited | Manufacturing | 2026 |
| Entireco Ltd | Real estate | 2026 |
| Entity Group Limited | Financial services | 2003 |
| Entity Hub Ltd | Information & communication | 2024 |
| Entran Limited | Professional & scientific | 2005 |
| Entreplumbers Ltd | Construction | 2026 |
| Entreprenastics Ltd | Education | 2020 |
| Ents 24 Limited | Information & communication | 2000 |
| Ents 24 Network Limited | Information & communication | 2013 |
| Ents Capital Limited | Arts & recreation | 2014 |
| Entwistle (SW) Limited | Wholesale & retail | 2006 |
| Enuzi Limited | Professional & scientific | 2017 |
| Envanta Limited | Information & communication | 2010 |
| Envelop Corporate Capital Ltd | Financial services | 2019 |
| Envelop Risk Analytics Limited | Financial services | 2016 |
| Envelop Risk Services Limited | Financial services | 2022 |
| Envgain Limited | Extraterritorial | 2021 |
| Enviart Recycle Ltd | Professional & scientific | 2019 |
| Enviren Ltd | Professional & scientific | 2021 |
| Enviro IT Limited | Water & waste | 2023 |
| Enviro LP | | 2016 |
| Enviro the Landscape Group Limited | Administrative & support | 2018 |
| Enviro Wise Solutions Ltd | Water & waste | 2022 |
| Enviroconsult.Pro Limited | Professional & scientific | 2012 |
| Envirodec SW Limited | Construction | 2012 |