| ENM Ltd | Real estate | 2025 |
| Enmac Consultancy Limited | Professional & scientific | 2019 |
| Enness Housing Limited | Real estate | 2023 |
| Ennismore Property Company Limited | Real estate | 1947 |
| Enodis Group Limited | Professional & scientific | 2001 |
| Enodis Hanover | Financial services | 2006 |
| Enodis Holdings Limited | Financial services | 2001 |
| Enodis Industrial Holdings Limited | Financial services | 1994 |
| Enodis International Limited | Financial services | 1994 |
| Enodis Maple Leaf Ltd | Financial services | 2007 |
| Enodis Oxford | Administrative & support | 2006 |
| Enodis Property Developments Limited | Construction | 1951 |
| Enodis Regent | Financial services | 2006 |
| Enodis Strand Ltd | Financial services | 2006 |
| Enrico Chiodino Ltd | Professional & scientific | 2021 |
| Enroly Holdings Ltd | Professional & scientific | 2015 |
| Entechk Ltd | Wholesale & retail | 2023 |
| Enterprise 360 Limited | Information & communication | 2005 |
| Enterprise Eight Limited | Hospitality | 2004 |
| Enterprise Management Training Ltd | Information & communication | 2018 |
| Entertainment Media Limited | Public administration | 2019 |
| Entity Consult (UK) Ltd | Wholesale & retail | 2014 |
| Envasantham Ltd | Wholesale & retail | 2020 |
| Enviroblasting (NE) Limited | Administrative & support | 2020 |
| Enviroclothes Limited | Water & waste | 2009 |
| Environmental Construction Solutions Limited | Wholesale & retail | 2002 |
| Environmental Consultative Services Limited | Professional & scientific | 2019 |
| Envision Design Group Limited | Professional & scientific | 2021 |
| Envision Landscape Consultants Ltd | Professional & scientific | 2023 |
| Envo Facilities Limited | Administrative & support | 2025 |
| Envoclean Ltd | Administrative & support | 2019 |
| Enzo Holdings Ltd | Financial services | 2026 |
| Enzo Investments 1 Ltd | Real estate | 2026 |
| EPC Northumbria Ltd | Professional & scientific | 2025 |
| EPD2026 Limited | Education | 2026 |
| EPF Ventures Ltd | Wholesale & retail | 2024 |
| Ephesus Properties Limited | Real estate | 2024 |
| Epic Camps Ltd | Education | 2024 |
| Epic Festivals Ltd | Hospitality | 2019 |
| Epic Social Limited | Information & communication | 2017 |
| Epicat Ltd | Information & communication | 2019 |
| Epicat Property Ltd | Real estate | 2023 |
| Epicate Limited | Professional & scientific | 2018 |
| Epiphany Limited | Health & social care | 2018 |
| EPM Lettings Ltd | Real estate | 2020 |
| EPM Plus Ltd | Information & communication | 2018 |
| EPR Building Services Ltd | Construction | 2023 |
| Epro (Wholesale) Limited | Wholesale & retail | 1962 |
| EQ Advantage Limited | Administrative & support | 2025 |
| Equal Arts Ltd. | Arts & recreation | 1986 |
| Equality Works Limited | Professional & scientific | 1997 |
| Equans Buildings Limited | Administrative & support | 1999 |
| Equans Developments Holdings UK Limited | Financial services | 2020 |
| Equans E&S Infrastructure UK Limited | Construction | 1961 |
| Equans E&S Solutions Limited | Administrative & support | 2001 |
| Equans E&S UK Limited | Extraterritorial | 2011 |
| Equans Engineering Services Limited | Extraterritorial | 1986 |
| Equans EV Solutions Limited | Professional & scientific | 2010 |
| Equans FM Limited | Energy | 1960 |
| Equans Group UK Limited | Professional & scientific | 1996 |
| Equans Holding UK Limited | Financial services | 2012 |
| Equans in Partnership Limited | Construction | 2001 |
| Equans Lceg Limited | Construction | 2020 |
| Equans Property Services Limited | Construction | 2007 |
| Equans Regeneration (Apollo) Limited | Construction | 1976 |
| Equans Regeneration (Bramall) Limited | Construction | 1979 |
| Equans Regeneration (FHM) Limited | Construction | 1959 |
| Equans Regeneration Holdings Limited | Professional & scientific | 2013 |
| Equans Regeneration Limited | Construction | 1983 |
| Equans Services Limited | Administrative & support | 1958 |
| Equans Services Trustee Limited | Extraterritorial | 2017 |
| Equator Fashion Rental Ltd | Wholesale & retail | 2023 |
| Equestrian Silver Limited | Other services | 2010 |
| Equilibrius Limited | Other services | 2007 |
| Equiname Limited | Arts & recreation | 1986 |
| Equine and Country Estates Ltd | Real estate | 2024 |
| Equippe Ltd | Hospitality | 2021 |
| Equity Accounting Ltd | Professional & scientific | 2020 |
| Equity IC Ltd | Financial services | 2021 |
| Equus Legal Limited | Professional & scientific | 2008 |
| ERA Bay Ltd | Wholesale & retail | 2025 |
| Erase Ltd | Other services | 2019 |
| Erasmus Living North-East Ltd | Hospitality | 2026 |
| ERB Catering Limited | Hospitality | 2019 |
| Erbil (Westgate) Ltd | Hospitality | 2025 |
| Ercwash Limited | Administrative & support | 2025 |
| ERF Medical Ltd | Health & social care | 2023 |
| Ergo Environmental Ltd | Professional & scientific | 2018 |
| Ergo Holdings Ltd | Financial services | 2022 |
| Ergo Ventures Limited | Financial services | 2025 |
| Ergonomic Systems Limited | Professional & scientific | 2005 |
| Eric's Mobile Barber Ltd | Other services | 2020 |
| Eric’S Mobile Barber Ltd Ltd | Other services | 2026 |
| Erikdigital Ltd | Wholesale & retail | 2026 |
| Eroded Sloom Studio Ltd | Information & communication | 2026 |
| ERP Dynamics Ltd | Information & communication | 2021 |
| Errbud Ltd | Administrative & support | 2026 |
| Erringtonactuary Limited | Financial services | 2023 |
| Erudus Limited | Information & communication | 2007 |
| ES Elegance Natural Products Limited | Manufacturing | 2025 |