| Encompass Reservoir Management Ltd | Professional & scientific | 2012 |
| Encounters Travel Ltd | Administrative & support | 2011 |
| Encredible Ltd | Professional & scientific | 2012 |
| Endeers Ltd | Wholesale & retail | 2025 |
| Endhouse Consulting Ltd | Professional & scientific | 2017 |
| Enercycle Limited | Wholesale & retail | 2009 |
| Enerfast Ltd | Manufacturing | 1984 |
| Energise SAP Assessors Limited | Professional & scientific | 2008 |
| Energy Environment Consulting Services Ltd | Professional & scientific | 2025 |
| Energy London Limited | Professional & scientific | 2022 |
| Energy Power Holdings Limited | Professional & scientific | 2024 |
| Energy Scavengers Limited | Professional & scientific | 2009 |
| Engineering Logistics Organisation (ELO) Limited | Construction | 2009 |
| Engineering Solutions Partnership Limited | Construction | 2006 |
| English Oak Buildings Ltd | Manufacturing | 2003 |
| English Rose Kitchens Limited | Wholesale & retail | 2009 |
| English-Chinese Education Services Ltd | Education | 2019 |
| Englishcombe View Amenities Limited | Households | 2012 |
| Engraving Artists Ltd | Manufacturing | 2015 |
| Enid Frances Holdings Limited | Financial services | 2021 |
| Enjoy Tours Limited | Administrative & support | 2015 |
| Enkardia Limited | Professional & scientific | 2012 |
| Enlighten of Bath Ltd | Wholesale & retail | 2018 |
| Enspace Architects Limited | Professional & scientific | 2006 |
| Enterprises Auric A.G. Limited | Manufacturing | 2020 |
| Entertaining Options Limited | Administrative & support | 1989 |
| Entrust Risk Management LLP | | 2023 |
| Entsvale Limited | Real estate | 1976 |
| Enttel Limited | Professional & scientific | 2013 |
| Environment ACT Ltd | Professional & scientific | 2025 |
| Environment Europe Limited | Professional & scientific | 2014 |
| Environmental Health Support Services Limited | Professional & scientific | 2005 |
| Eopsin Limited | Professional & scientific | 2019 |
| EP Equity Ltd | Arts & recreation | 2018 |
| EP Mallory & SON (Holdings) Limited | Financial services | 2016 |
| EP Partners Ltd | Administrative & support | 2013 |
| EP Strategy Limited | Professional & scientific | 2022 |
| EPC Bath Ltd | Professional & scientific | 2026 |
| Ephemeral Culture LAB Ltd | Professional & scientific | 2025 |
| Epic Nocode Limited | Information & communication | 2025 |
| Epigenetics Clinic Ltd | Professional & scientific | 2013 |
| Epione Ventures Limited | Professional & scientific | 2019 |
| Epoch Centres Ltd | Health & social care | 2016 |
| Epoch Newark Ltd. | Health & social care | 2024 |
| Epsb Ltd | Arts & recreation | 2017 |
| Epsilon Festivals Limited | Arts & recreation | 2020 |
| EQ Partners Ltd | Professional & scientific | 2023 |
| Equagen Limited | Real estate | 2014 |
| Equagen Property Limited | Real estate | 2019 |
| Equagroup Limited | Construction | 2016 |
| Equal Partners Consulting Ltd | Professional & scientific | 2023 |
| Equaliving Limited | Real estate | 2018 |
| Equaprojects Limited | Construction | 2017 |
| Equine and Dine Ltd | Hospitality | 2021 |
| Equity and Inclusion Services Ltd | Education | 2024 |
| Equity Growth Partners Ltd | Administrative & support | 2009 |
| Equus Management (Bath) Limited | Households | 2011 |
| Er&A Properties Ltd | Real estate | 2024 |
| Erak Global Works Ltd | Administrative & support | 2015 |
| Eram Traders International Limited | Wholesale & retail | 2025 |
| Erascape Ltd | Wholesale & retail | 2025 |
| Ercus Limited | Construction | 2018 |
| Ergsy.Com Ltd | Information & communication | 2015 |
| Erinngo Holdings Ltd | Financial services | 2024 |
| Eros Studios Ltd | Information & communication | 2025 |
| Erwood and Morris Limited | Construction | 2018 |
| ERY Limited | Hospitality | 2019 |
| Esatto Projects Ltd | Construction | 2023 |
| Eschenbach UK Holdings Limited | Financial services | 2008 |
| ESD Practice Limited | Health & social care | 2015 |
| ESG Benchmark Group Limited | Information & communication | 2020 |
| ESG Leisure Limited | Arts & recreation | 2018 |
| Esgovernance Limited | Professional & scientific | 2012 |
| Eshack Limited | Wholesale & retail | 2012 |
| Esher House Residents Management Co Ltd | Households | 2025 |
| Espadrilles of Bath Ltd | Manufacturing | 1992 |
| Esphere Digital Limited | Wholesale & retail | 2018 |
| Esquires Barber Shop Ltd | Other services | 2008 |
| Esse Limited | Agriculture & fishing | 2001 |
| Essenlyn Consulting Limited | Professional & scientific | 2016 |
| Essex House Development 2 Limited | Real estate | 2020 |
| Essex House Development Limited | Real estate | 2017 |
| Estalytics Ltd | Information & communication | 2025 |
| Estate of the Arts Ltd | Arts & recreation | 2020 |
| Estate Services Limited | Households | 1996 |
| Esther Thompson Communications Ltd | Professional & scientific | 2021 |
| ET Assets Ltd | Real estate | 2019 |
| ETE Mode Europe Ltd | Professional & scientific | 2010 |
| Etheridge Holdings Ltd | Financial services | 2024 |
| Ethiopiaid | Health & social care | 1989 |
| Ethisys Ltd | Information & communication | 2018 |
| Ethlanamax UK Ltd | Administrative & support | 2016 |
| Etit Ltd | Information & communication | 2014 |
| ETR Communications Ltd | Professional & scientific | 2025 |
| ETR Glamping Ltd | Hospitality | 2026 |
| Eumetric Ltd | Administrative & support | 2018 |
| Euphoric Panda Ltd. | Information & communication | 2012 |
| EURO-M2M Limited | Administrative & support | 2020 |
| European Connoisseurs Travel Limited | Administrative & support | 2000 |
| European Solar Energy Limited | Professional & scientific | 2020 |