| Easypumps Limited | Manufacturing | 2003 |
| Eatpure Limited | Hospitality | 1997 |
| Eclipse Sports Promotions Limited | Arts & recreation | 2004 |
| Ecobed (UK) Limited | Professional & scientific | 2007 |
| Ecomania Ltd | Other services | 2019 |
| Econometric Limited | Water & waste | 2001 |
| Ecopack Global Limited | Wholesale & retail | 2023 |
| Eddie Nilsson Ltd | Construction | 2003 |
| Eddleman Limited | Information & communication | 1980 |
| Edelmira Beauty Ltd | Other services | 2010 |
| Edge Grove School Trust Limited | Education | 1969 |
| EDI Digital Solutions and Consultancy Limited | Public administration | 2026 |
| Edward C.Buckwald Limited | Health & social care | 2002 |
| Edzan Limited | Transport & logistics | 2014 |
| Efpg Raine International Limited | Professional & scientific | 2008 |
| Egan Property Limited | Real estate | 2006 |
| EGG Entertainment Ltd | Arts & recreation | 2021 |
| EL Education Links Limited | Education | 2022 |
| EL Nino Media Limited | Information & communication | 2003 |
| Elan (UK) Installations Limited | Arts & recreation | 2005 |
| ELC Heating Services Ltd | Construction | 2023 |
| Electric Motor & Mechanical Services Ltd | Construction | 2002 |
| Electrical Design and Installations Limited | Extraterritorial | 1986 |
| Elevate Property Holdings Ltd | Real estate | 2023 |
| Elgar Works Limited | Information & communication | 2007 |
| Eliot Development Ltd | Real estate | 2022 |
| Elite Courier Company Limited | Transport & logistics | 1992 |
| Elite Fuels Ltd | Wholesale & retail | 1995 |
| Elite Overnight Limited | Professional & scientific | 1999 |
| Elite Worldwide Limited | Transport & logistics | 1999 |
| Eliterate Solutions Limited | Professional & scientific | 2003 |
| Elizabeth House Management (Stotfold) Limited | Households | 2005 |
| Ellswood Finance Co. Limited | Real estate | 1959 |
| Elstree, Borehamwood and District Community Association | Other services | 2004 |
| Elyte Healthcare Ltd | Health & social care | 2013 |
| Em-Kay Heating & Plumbing Services Limited | Construction | 2003 |
| EMC Shielding Solutions Limited | Professional & scientific | 2003 |
| Emera Designs Limited | Households | 2002 |
| Emess Trading Limited | Wholesale & retail | 1995 |
| Emilydtv Ltd | Professional & scientific | 2015 |
| Emmaus Hertfordshire Ltd | Health & social care | 1999 |
| Emperor Cezar Limited | Transport & logistics | 2015 |
| Emyac Ltd | Administrative & support | 2017 |
| Encinas Trustees Limited | Professional & scientific | 2004 |
| Endosys Developments Limited | Real estate | 2001 |
| Enfield BED Shed Ltd | Wholesale & retail | 2024 |
| Enfield Electrical Supplies Limited | Wholesale & retail | 1968 |
| Enfield Limited | Real estate | 2001 |
| Engineered Systems Limited | Information & communication | 1997 |
| Enron Estates Limited | Construction | 2002 |
| Entrian Solutions Limited | Information & communication | 2001 |
| Envoplan Holdings Limited | Other services | 2021 |
| Envoplan Modular Limited | Construction | 2024 |
| Enzyme Consulting Limited | Administrative & support | 2002 |
| EPMO2 Limited | Professional & scientific | 2014 |
| Epsilon Enterprise Ltd | Arts & recreation | 2020 |
| Equestrian Way (Block 1 Apartments) Management Company Limited | Households | 2025 |
| Equestrian Way (Block 2 Apartments) Management Company Limited | Households | 2025 |
| Equity Release Compliance Limited | Education | 2001 |
| Erblin Properties Ltd | Real estate | 2021 |
| Eryn-David Ltd | Real estate | 2020 |
| Eshaan Ltd | Information & communication | 2011 |
| Esku Ltd | Wholesale & retail | 2025 |
| Esparo Limited | Information & communication | 2004 |
| Essex Electrical (Contracts) Limited | Construction | 2007 |
| Essex Telephone Services Limited | Manufacturing | 1983 |
| Estates Management Information Systems Limited | Professional & scientific | 1996 |
| Esti-Mates Co Ltd | Administrative & support | 2005 |
| Etanda Limited | Information & communication | 2003 |
| Ethosworld.Com Ltd. | Professional & scientific | 1999 |
| Eton Lodge (Management NO.2) Company Limited | Real estate | 2001 |
| Eumax Limited | Construction | 1990 |
| Euro Circuit Boards Limited | Manufacturing | 2000 |
| Eurobeam Services Ltd | Real estate | 2002 |
| Eurodale Estates Limited | Construction | 1992 |
| European Investments (Cornwall) Holdings Limited | Financial services | 2017 |
| European Microwaves Limited | Professional & scientific | 1983 |
| Eurotheme (UK) Limited | | 1999 |
| Evaline Investments Limited | Real estate | 1956 |
| Evanswild Limited | Wholesale & retail | 1994 |
| EVE and Adam Limited | Other services | 2002 |
| Events Focus Limited | Professional & scientific | 2003 |
| Evergreen Landscapes and Building Services Limited | Administrative & support | 2006 |
| Evershed Associates Limited | Manufacturing | 2001 |
| Evershed Estates Limited | Real estate | 2004 |
| Everything Spine | Health & social care | 2006 |
| Everyvalve Limited | Administrative & support | 2003 |
| Evibem Limited | Hospitality | 2021 |
| Evisa Solutions Limited | Administrative & support | 2003 |
| Evolution Build & Decoration Limited | Construction | 2020 |
| Evolveu Creative Limited | Professional & scientific | 2024 |
| Ewoman Ltd | Manufacturing | 2019 |
| Ex-Elecs Limited | Professional & scientific | 1998 |
| Exalime Limited | Wholesale & retail | 1977 |
| Excel Patel Limited | Information & communication | 2014 |
| Exclusive Motorsport Ltd | Wholesale & retail | 2018 |
| Exclusive Vehicle Contracts Limited | Administrative & support | 1996 |
| Exec Travel UK Limited | Information & communication | 2003 |
| Executive Vision Limited | Professional & scientific | 2007 |
| Extension Services Ltd | Construction | 2020 |