| E. & J. Meeks Limited | Professional & scientific | 1974 |
| E. Gill & Sons Limited | Extraterritorial | 1998 |
| E. Moss, Limited | Professional & scientific | 1934 |
| E. Peart Limited | Extraterritorial | 1994 |
| E.Copeland Property Company (Midlands)Limited | Construction | 1969 |
| E.D.S. (UK) Ltd | Construction | 2010 |
| E.Hawley (Masons) Limited | Manufacturing | 1963 |
| E.I.P Media Productions Ltd | Information & communication | 2023 |
| E.L Kennedy Limited | Manufacturing | 2010 |
| E.L.F Property Ltd | Real estate | 2024 |
| E.L.I Distribution Limited | Manufacturing | 2007 |
| E.L.M.P. Limited | Hospitality | 2005 |
| E.N Care Ltd | Health & social care | 2013 |
| E.O.Smith & Co. Limited | Real estate | 1910 |
| E.On (Cross-Border) Pension Trustees Limited | Extraterritorial | 1998 |
| E.On Connecting Energies Limited | Administrative & support | 2011 |
| E.On Control Solutions Limited | Professional & scientific | 2003 |
| E.On Drive Solutions UK Limited | Energy | 2020 |
| E.On Energy GAS (Eastern) Limited | Extraterritorial | 2000 |
| E.On Energy GAS (Northwest) Limited | Professional & scientific | 1993 |
| E.On Energy Installation Services Limited | Construction | 2016 |
| E.On Energy Solutions Limited | Energy | 1997 |
| E.On IT UK Limited | Extraterritorial | 2005 |
| E.On Next Energy Limited | Energy | 1999 |
| E.On Project Earth Limited | Professional & scientific | 2012 |
| E.On UK Battery Storage Systems Limited | Energy | 2023 |
| E.On UK CHP Limited | Energy | 1992 |
| E.On UK EIS Holdings Limited | Financial services | 2023 |
| E.On UK Energy Markets Limited | Energy | 2015 |
| E.On UK Energy Services Limited | Professional & scientific | 2005 |
| E.On UK Green Funding Solutions Limited | Energy | 1992 |
| E.On UK Heat Limited | Energy | 2017 |
| E.On UK Holding Company Limited | Financial services | 1977 |
| E.On UK Industrial Shipping Limited | Extraterritorial | 1997 |
| E.On UK Infrastructure Services Limited | Energy | 2011 |
| E.On UK Limited | Energy | 1989 |
| E.On UK Network Assets Limited | Energy | 1999 |
| E.On UK Pension Trustees Limited | Professional & scientific | 1988 |
| E.On UK Property Services Limited | Extraterritorial | 1999 |
| E.On UK PS Limited | Extraterritorial | 2008 |
| E.On UK Steven’S Croft Limited | Energy | 2016 |
| E.On UK Trustees Limited | Professional & scientific | 2004 |
| E.P Video Editing Ltd | Information & communication | 2026 |
| E.P.G Pharma Ltd | Manufacturing | 2018 |
| E.Qayum Limited | Health & social care | 2008 |
| E.S. Fraser Audio Ltd | Information & communication | 2019 |
| E.T.E Express Ltd | Transport & logistics | 2025 |
| E1019 Leasing Limited | Administrative & support | 2003 |
| E1076 Trading Limited | Administrative & support | 2002 |
| E1124 Trading Limited | Administrative & support | 2002 |
| E2 (UK) Limited | Real estate | 2011 |
| E2040 Leasing Limited | Administrative & support | 2005 |
| E2MAC Limited | Construction | 2018 |
| E3174 Trading Limited | Administrative & support | 2004 |
| E3205 Trading Limited | Administrative & support | 2004 |
| E4 Electrical Ltd | Construction | 2018 |
| E9 Limited | Manufacturing | 2002 |
| EA Motorhaus Limited | Wholesale & retail | 2025 |
| Eaadns Limited | Real estate | 2026 |
| EAC Consultants Ltd | Professional & scientific | 2021 |
| EAC Legacy Limited | Other services | 2026 |
| EAC Nottingham Limited | Hospitality | 2022 |
| Eade Limited | Professional & scientific | 2020 |
| Eagle (G.E.T.) Fabrications Ltd | Manufacturing | 2010 |
| Eagle (London) Construction Services Ltd | Construction | 2021 |
| Eagle Black Ltd | Information & communication | 2019 |
| Eagle Caffe Ltd | Hospitality | 2025 |
| Eagle E-Xpert Ltd | Wholesale & retail | 2023 |
| Eagle Electrical (East Midlands) Limited | Construction | 2019 |
| Eagle Equity Ltd | Real estate | 2024 |
| Eagle EYE Investments Limited | Real estate | 1997 |
| Eagle Eye-T Ltd | Professional & scientific | 2024 |
| Eagle Eyed Exterior Cleaning Limited | Administrative & support | 2019 |
| Eagle Fabrication & Insulation (Holdings) Limited | Financial services | 2021 |
| Eagle Fabrication and Insulation Services Limited | Manufacturing | 1988 |
| Eagle Fabrication Services Limited | Construction | 2021 |
| Eagle GP Ltd | Health & social care | 2014 |
| Eagle Holding Investments Ltd | Financial services | 2025 |
| Eagle Motor Group Ltd | Wholesale & retail | 2022 |
| Eagle Nottingham Construction Ltd | Construction | 2025 |
| Eagle Scientific Limited | Wholesale & retail | 1979 |
| Eagle Scitech Limited | Professional & scientific | 2008 |
| Eagle Therapy Services Limited | Health & social care | 2015 |
| Eaglewatch FM Ltd | Administrative & support | 2018 |
| EAH Building and Landscaping Ltd | Construction | 2022 |
| Eakring Property Services Limited | Real estate | 2014 |
| EAL Engine Services Ltd. | Professional & scientific | 2017 |
| EAL Equipment Sales Limited | Wholesale & retail | 2025 |
| EAL Estate Services Limited | Real estate | 2024 |
| Eamadi Ltd | Real estate | 2023 |
| EAR N NOW EAR Health Ltd | Health & social care | 2024 |
| EAR Pantry Ltd | Wholesale & retail | 2024 |
| Earache Records Limited | Information & communication | 1993 |
| Earache Songs (UK) Limited | Information & communication | 1997 |
| Earl & Co. (Ashford) Limited | Extraterritorial | 1980 |
| Earl & Co. (Funeral Services) Limited | Extraterritorial | 1983 |
| Earlsdon Pharma Ltd | Wholesale & retail | 2023 |
| Earlswood Local Ltd | Wholesale & retail | 2024 |
| Early Days Child and Family Nutrition CIC | Education | 2026 |
| Early Excel Ltd | Education | 2015 |