| Environments for Learning Leeds PFI Two Limited | Administrative & support | 2008 |
| Environments for Learning Leeds PSP Limited | Financial services | 2007 |
| Environments for Learning Limited | Financial services | 2007 |
| Environments for Learning Sandwell PFI Holdco One Limited | Financial services | 2009 |
| Environments for Learning Sandwell PFI One Limited | Administrative & support | 2009 |
| Environments for Learning Sandwell PSP Limited | Financial services | 2009 |
| Environments for Learning ST Helens Holdco Limited | Financial services | 2010 |
| Environments for Learning ST Helens Partnership Limited | Financial services | 2010 |
| Environments for Learning ST Helens PFI Limited | Administrative & support | 2010 |
| Environments for Learning ST Helens PSP Limited | Financial services | 2010 |
| Envirotherm Ltd | Construction | 2019 |
| Envision Adventures Ltd | Health & social care | 2025 |
| Envision Security Ltd | Administrative & support | 2021 |
| Envolve Infrastructure Limited | Construction | 1984 |
| Envy Digital Studio Ltd | Professional & scientific | 2025 |
| Enya Doherty Makeup Ltd | Other services | 2023 |
| Enyz Childcare Services Ltd | Health & social care | 2026 |
| Enzo Detailing Ltd | Wholesale & retail | 2024 |
| Enzo's Estates (Cliffe Vale) Limited | Construction | 2021 |
| Enzo's Estates (Llandybie) Ltd | Real estate | 2021 |
| Enzo's Estates Limited | Construction | 2016 |
| Enzygo Consultancy Services Limited | Financial services | 2021 |
| Enzygo Geoenvironmental Limited | Professional & scientific | 2016 |
| Enzygo Holdings Limited | Professional & scientific | 2016 |
| Enzygo Limited | Professional & scientific | 2008 |
| EOA17 Ltd | Administrative & support | 2023 |
| EOB Consulting Limited | Information & communication | 2019 |
| Eoghan Consulting Limited | Information & communication | 2024 |
| Eojb Creative Limited | Arts & recreation | 2025 |
| EOW Couriers Limited | Transport & logistics | 2023 |
| EP Realisations Limited | Water & waste | 1982 |
| EP Sourcing Ltd | Real estate | 2023 |
| Epayment Ltd | Financial services | 2025 |
| EPC Workforce 2 Ltd | Education | 2023 |
| Epc-Residential Ltd | Real estate | 2020 |
| Epco International Mining Supplies Limited | Manufacturing | 2008 |
| Epco Limited | Manufacturing | 1994 |
| EPD Holdings Limited | Professional & scientific | 2016 |
| Epetome Ltd | Manufacturing | 2023 |
| EPH Properties Limited | Real estate | 2014 |
| Ephesus Restaurant Ltd | Hospitality | 2013 |
| Ephyx Ltd | Information & communication | 2026 |
| EPI (Europe) Limited | Manufacturing | 1994 |
| Epic Care Services Bradford Limited | Health & social care | 2021 |
| Epic Franchising Limited | Other services | 2019 |
| Epic Grind Ltd | Information & communication | 2026 |
| Epic MAN Franchise Ltd | Hospitality | 2024 |
| Epic Restaurant Group Limited | Professional & scientific | 2019 |
| Epilepsy Action | Extraterritorial | 2000 |
| Epilepsy UK | Health & social care | 1990 |
| Epimethon Labs Ltd | Financial services | 2026 |
| Epiphany Hair Lounge Limited | Other services | 2018 |
| Episode Consultants Limited | Professional & scientific | 2016 |
| Epitope Communications Ltd | Professional & scientific | 2025 |
| Epms Group Limited | Financial services | 2015 |
| Epms Holdings Limited | Financial services | 2022 |
| Epms Supplies Limited | Wholesale & retail | 2011 |
| EPO Couriers Ltd | Transport & logistics | 2018 |
| Epoch Homecare (EHC) Limited | Health & social care | 2015 |
| Epoxybydesign Limited | Professional & scientific | 2021 |
| EPP Realisatiion Limited | Water & waste | 1990 |
| Eppie BEE Holdings Limited | Wholesale & retail | 2022 |
| EPS Leeds (Morley) Ltd | Construction | 2022 |
| Epsicon Ventures Limited | Wholesale & retail | 1998 |
| Epsilon Medical Ltd | Health & social care | 2025 |
| Epta Bridal Limited | Wholesale & retail | 2016 |
| EPW Holdings Limited | Professional & scientific | 2016 |
| Epyon Systems Ltd | Information & communication | 2018 |
| EQ Property Limited | Real estate | 2020 |
| EQ Technologic (UK) Limited | Information & communication | 2011 |
| EQB Limited | Hospitality | 2017 |
| Eqineox Ltd | Wholesale & retail | 2023 |
| Equaflow Ltd | Construction | 2009 |
| Equalcare Limited | Health & social care | 2018 |
| Equals One Limited | Administrative & support | 2009 |
| Equdex Technologies Limited | Information & communication | 2022 |
| Equenox T/A the Horse BIT Bank Ltd | Wholesale & retail | 2012 |
| Equestrian's Choice Ltd | Wholesale & retail | 2019 |
| Equicare Assess Ltd | Public administration | 2025 |
| Equicare Supplies Limited | Wholesale & retail | 2025 |
| Equigraphic Studios Limited | Arts & recreation | 1986 |
| Equiinet Limited | Real estate | 2003 |
| Equilibrium South West Ltd | Construction | 2022 |
| Equine Back in Action Ltd | Professional & scientific | 2023 |
| Equine Back in Line Limited | Professional & scientific | 2014 |
| Equine Easy Clear Limited | Administrative & support | 1997 |
| Equinox Design (Holdings) Limited | Professional & scientific | 2002 |
| Equinox Design Group Limited | Professional & scientific | 2015 |
| Equinox Design Limited | Manufacturing | 1983 |
| Equinox Exhibitions Ltd | Extraterritorial | 2005 |
| Equinox Surveying Ltd | Financial services | 2024 |
| Equion Health (Newcastle) Limited | Professional & scientific | 2004 |
| Equip Education Limited | Education | 2025 |
| Equip ME Quick Ltd | Information & communication | 2018 |
| Equiparo Holdings Ltd | Financial services | 2026 |
| Equipoise Reformer Pilates Limited | Arts & recreation | 2026 |
| Equipoise Studio Limited | Arts & recreation | 2026 |
| Equipride Ltd | Wholesale & retail | 2016 |
| Equiron Logistics Ltd. | Water & waste | 2023 |
| Equissimo Limited | Wholesale & retail | 2017 |