| Ennios AL Porto Limited | Hospitality | 2004 |
| Enoflex Limited | Manufacturing | 2020 |
| Enoten Ltd | Information & communication | 2019 |
| Enovtec Ltd | Information & communication | 2022 |
| Enriched Media Group Ltd | Information & communication | 2018 |
| Enriching Partners Limited | Financial services | 2024 |
| ENS Consultancy Limited | Professional & scientific | 2014 |
| Ensco Consulting Limited | Professional & scientific | 2020 |
| Ensco Property SPV 1 Limited | Real estate | 2023 |
| Ensemble Combined Services Limited | Hospitality | 2010 |
| Ensign Marine & Industrial Ltd. | Wholesale & retail | 1995 |
| Ensign Yard Limited | Households | 2024 |
| Ensom Picture Company Limited | Information & communication | 2023 |
| Enstatx LLP | | 2025 |
| Ent-Ice Innovations Limited | Wholesale & retail | 2011 |
| Enterprise Logistics & Courier Services Ltd | Transport & logistics | 2014 |
| Entity Development Solutions Ltd | Construction | 2024 |
| Entro Service Holdings Limited | Administrative & support | 2025 |
| Enviricard Limited | Manufacturing | 2023 |
| Enviro Total Solutions Ltd | Professional & scientific | 2013 |
| Envirolex Ltd | Construction | 2021 |
| Enviromate Reuse Ltd | Administrative & support | 2015 |
| Environmental Monitors Ltd | Professional & scientific | 2017 |
| Environmental Regulation and Information Centre Ltd | Education | 2004 |
| Enviros Group Holdings Limited | Financial services | 2026 |
| Enviros Haiyan Ocean Equipment Limited | Manufacturing | 2025 |
| Enviros Survey & Consultancy Ltd | Professional & scientific | 2018 |
| Envirothermal Heating Solutions Ltd | Construction | 2019 |
| Envirowashing Ltd | Wholesale & retail | 2022 |
| Envision Event Productions Limited | Arts & recreation | 2020 |
| Envision Serviced Apartments Ltd | Hospitality | 2020 |
| Envy Gifting Ltd | Wholesale & retail | 2024 |
| Enyo Events Ltd | Arts & recreation | 2021 |
| Enyo Grappling CIC | Wholesale & retail | 2025 |
| EOE Consultancy Ltd | Professional & scientific | 2010 |
| EOL Ltd | Hospitality | 2018 |
| EOS Asset Holdings Limited | Financial services | 2025 |
| EOS Technologies Limited | Manufacturing | 2024 |
| Eosh (Environmental Occupational Safety & Health) Ltd | Information & communication | 2025 |
| EPC Southampton Limited | Other services | 2020 |
| Eped Ltd | Manufacturing | 2026 |
| Epeiros Ltd | Wholesale & retail | 2022 |
| Epic Utilities Limited | Other services | 2018 |
| Epildevconnect Ltd | Information & communication | 2026 |
| Epos Gurus Ltd | Information & communication | 2023 |
| EPR Rental Ltd | Real estate | 2026 |
| Epropulsion Technology GB Limited | Wholesale & retail | 2025 |
| Epsilonr Engineering Ltd | Manufacturing | 2024 |
| Epsilonr Ltd | Administrative & support | 2020 |
| Epula Dining Ltd | Hospitality | 2024 |
| Eqlife Ltd | Wholesale & retail | 2020 |
| Equal Ventures Limited | Other services | 2014 |
| Equapura Ltd | Real estate | 2026 |
| Eqube Technology and Software (U.K.) Limited | Information & communication | 2013 |
| Equestrian Fencing and Timber Limited | Wholesale & retail | 2015 |
| Equeum Limited | Education | 2018 |
| Equievolve Coaching Limited | Arts & recreation | 2014 |
| Equilibrium Trading Ltd | Wholesale & retail | 2018 |
| Equine Canine Limited | Other services | 2018 |
| Equinox Escapes Ltd | Real estate | 2022 |
| Equinox Gentleman's Refinery Ltd | Other services | 2018 |
| Equinox ME DWC Ltd | Transport & logistics | 2023 |
| Equinox Property Services Ltd | Real estate | 2024 |
| Equitel Solutions Ltd | Information & communication | 2019 |
| Equitow Ltd | Administrative & support | 2026 |
| Equity Management Solutions Ltd | Professional & scientific | 2014 |
| Equity Property Services Limited | Real estate | 1999 |
| Equity Solution Ltd | Other services | 2023 |
| ER Catering Ltd | Hospitality | 2022 |
| Eram Estates Ltd | Real estate | 2025 |
| ERB Fitness Ltd | Arts & recreation | 2020 |
| Erban Abode Property Solutions Limited | Extraterritorial | 2023 |
| Ergb Ltd | Hospitality | 2024 |
| Eriban Business Services Ltd | Information & communication | 2025 |
| Eric Ngubane Limited | Other services | 2017 |
| Eric Robinson Limited | Professional & scientific | 2004 |
| Eric Robinson NO. 1 Limited | Administrative & support | 2017 |
| Eric Robinson NO. 2 Limited | Administrative & support | 2017 |
| Eric Robinson Solicitors Limited | Professional & scientific | 2004 |
| Ericneda Limited | Administrative & support | 2022 |
| Erinsel Limited | Real estate | 2023 |
| Eris Connect Limited | Professional & scientific | 2023 |
| Eris Media Solutions Limited | Professional & scientific | 2017 |
| Ernest & Co Recruitment Limited | Administrative & support | 2017 |
| Ernest C & Co Ltd | Transport & logistics | 2018 |
| Ernest Care Limited | Wholesale & retail | 2022 |
| Ernest T Limited | Health & social care | 2021 |
| Ernest Traders Ltd | Construction | 2026 |
| ERP Value Limited | Information & communication | 2016 |
| Errand Trips UK Limited | Administrative & support | 2018 |
| Eryk Handyman Ltd | Construction | 2023 |
| ES Business Builder Ltd | Professional & scientific | 2025 |
| ES Manufacturing Ltd | Manufacturing | 1992 |
| ES Photo Limited | Professional & scientific | 2021 |
| ESC Developments Limited | Construction | 2006 |
| Escape Boat Club Ltd | Wholesale & retail | 2026 |
| Escape Channel Limited | Information & communication | 2003 |
| Escape the Studio Ltd | Arts & recreation | 2015 |
| Eschedule Limited | Information & communication | 2022 |
| Escher Silverman Global Ltd | Professional & scientific | 2021 |