| Echw Construction Services Limited | Professional & scientific | 2015 |
| ECM Technologies (UK) Ltd. | Wholesale & retail | 1978 |
| Edge Engineering and Design Ltd | Agriculture & fishing | 2025 |
| Edge Square Partners Ltd | Professional & scientific | 2010 |
| Edgecad Outsourcing Limited | Professional & scientific | 2011 |
| Edify Works Ltd | Professional & scientific | 2025 |
| Edition 13 Ltd | Wholesale & retail | 2021 |
| EDL (UK) LFG Generation Limited | Energy | 2006 |
| EDL Franklin UK Limited | Energy | 2009 |
| EDL Holdings (UK) Limited | Financial services | 1997 |
| Eduversity Limited | Education | 2018 |
| Eest Ltd | Professional & scientific | 2005 |
| Efficasafe Ltd | Information & communication | 2025 |
| EIS Capital Limited | Financial services | 2017 |
| EIV Building Consultancy Limited | Professional & scientific | 2024 |
| EKA Group Holdings Ltd | Professional & scientific | 1981 |
| EKA Limited | Manufacturing | 1978 |
| EKO Training Ltd | Education | 2026 |
| Eldmund Limited | Real estate | 2014 |
| Electrikarl Ltd | Construction | 2023 |
| Elevate Wellness Centre Ltd | Other services | 2022 |
| Elford-Lugg Consulting Limited | Professional & scientific | 2005 |
| ELH Legacy Holdings Ltd | Administrative & support | 2024 |
| Elifar Ltd | Health & social care | 2025 |
| Elite Finance Solutions Limited | Financial services | 2023 |
| Elite Office and Garden Rooms Limited | Construction | 2023 |
| Elite OFM Ltd | Professional & scientific | 2024 |
| Ells Kitchen Catering Ltd | Hospitality | 2022 |
| Elty Store Limited | Wholesale & retail | 2020 |
| Elworthy Oak Limited | Real estate | 2015 |
| Elza Prop Ltd | Real estate | 2025 |
| Elza Tech Ltd | Information & communication | 2024 |
| Embaque Limited | Information & communication | 2004 |
| Ember & Spice Ltd | Hospitality | 2026 |
| Embroidery Solutions Ltd | Manufacturing | 2012 |
| Emech Consulting Ltd | Professional & scientific | 2024 |
| Emerald Leaf Properties Ltd | Real estate | 2025 |
| Encore Brickwork Ltd | Construction | 2026 |
| END Enterprises Ltd | Wholesale & retail | 2008 |
| Endsleigh Press Ltd | Information & communication | 2025 |
| Energy Developments (UK) Limited | Energy | 1996 |
| Engineering Workers Limited | Professional & scientific | 2010 |
| Engineers World Limited | Professional & scientific | 2018 |
| Enisus Ltd | Information & communication | 1998 |
| Enterpack Ltd | Wholesale & retail | 1992 |
| Envision Racing Limited | Arts & recreation | 2013 |
| Enviya Ltd | Professional & scientific | 2025 |
| Equify Limited | Real estate | 2003 |
| Equine Oral Health and Vitality Limited | Professional & scientific | 2017 |
| Equus HR Solutions Limited | Administrative & support | 2008 |
| Erma Domiciliary Care Ltd | Health & social care | 2026 |
| Erma Recruiting Limited | Administrative & support | 2025 |
| ES Products and Design Limited | Professional & scientific | 2017 |
| Escape Room Adventures Ltd | Construction | 2017 |
| Esdebe Consultancy Limited | Wholesale & retail | 2001 |
| Espositos Limited | Information & communication | 2006 |
| Essex ST (Properties) DM Co Ltd | Construction | 2022 |
| Essex ST (Properties) Limited | Real estate | 2019 |
| Essex Street (Affordables) Ltd | Real estate | 2026 |
| ET Contracting Ltd | Construction | 2019 |
| Eton Consultancy Limited | Professional & scientific | 2017 |
| Etrolleyz Limited | Wholesale & retail | 2023 |
| Ettinger Productions Limited | Information & communication | 2025 |
| Eurika Training and Coaching Limited | Administrative & support | 2009 |
| Europeco Ltd | Information & communication | 2009 |
| Evaid Ltd | Professional & scientific | 2021 |
| Event 21 Ltd | Hospitality | 2022 |
| Event Technicians Limited | Administrative & support | 2012 |
| Evolve Hair Specialists Ltd | Other services | 2014 |
| Evolve Marketing Limited | Professional & scientific | 2006 |
| Evolve Peptides Ltd | Wholesale & retail | 2026 |
| EWS Surveys Limited | Professional & scientific | 2021 |
| Excellence the Norm Limited | Professional & scientific | 2012 |
| Excelsior Group Limited | Construction | 2008 |
| Excelsior Land Limited | Construction | 2025 |
| EXE D 4 Limited | Households | 2003 |
| Expert Therapy Limited | Health & social care | 2019 |
| Extreme Boats EU Limited | Wholesale & retail | 2019 |
| EYE & Retinaspecialist UK LLP | | 2012 |
| Eyecandy Brows Ltd | Other services | 2016 |
| F Automotive Ltd | Arts & recreation | 2020 |
| F J Morris Contracting Limited | Construction | 1977 |
| F W Holes & SON Limited | Extraterritorial | 2013 |
| Fable Stays Limited | Real estate | 2025 |
| Fabreon Limited | Professional & scientific | 2026 |
| Fabrichine Ltd | Manufacturing | 2016 |
| Fairway Holdings Ltd | Real estate | 2023 |
| Faith Systems Limited | Construction | 2005 |
| Falcon Rock Limited | Other services | 2023 |
| Falconshire Interiors Ltd | Wholesale & retail | 2010 |
| Falconwood Joinery Ltd | Manufacturing | 2024 |
| Faramir Consulting Limited | Professional & scientific | 2014 |
| Farmcare Central Limited | Professional & scientific | 2011 |
| Fbtk Ventures Limited | Real estate | 2018 |
| FD Answers Limited | Professional & scientific | 2007 |
| Fearless Training Ltd | Administrative & support | 2016 |
| Fearn-Hilsdon Associates Limited | Information & communication | 2017 |
| Felugoc Limited | Real estate | 2023 |
| Fencare Limited | Households | 1979 |
| Fenix Bridge Aviation Holdings Ltd | Financial services | 2024 |