| Envar Composting Kent Limited | Extraterritorial | 2006 |
| Envar Composting Limited | Water & waste | 2001 |
| Envelop South East Limited | Construction | 2022 |
| Enver Builders Ltd | Construction | 2023 |
| Enviro Business Intelligence Limited | Manufacturing | 2015 |
| Enviro Communications Services Ltd | Information & communication | 2019 |
| Enviro Heating Services Ltd | Construction | 2018 |
| Enviro Tablets Ltd | Manufacturing | 2006 |
| Envirocare Group Limited | Water & waste | 2020 |
| Envirogreen Limited | Other services | 1993 |
| Environ Senz Ltd | Professional & scientific | 2019 |
| Environmental Partnerships (UK) Limited | Construction | 2001 |
| Envirorides Ltd | Wholesale & retail | 2022 |
| Envirowrap Group Limited | Construction | 1997 |
| Envirowrap Solutions Limited | Construction | 2009 |
| Eoad Associates Limited | Information & communication | 2007 |
| Ep&Co. Property Professionals Ltd | Households | 2026 |
| EPB Recruitment Solutions Ltd | Administrative & support | 2011 |
| EPC & Property Hub Limited | Professional & scientific | 2025 |
| Ephraim Model Management Ltd | Administrative & support | 2024 |
| EPI Electrical Limited | Administrative & support | 2016 |
| Epic Consultants Ltd | Professional & scientific | 2022 |
| EPIC1 Foundation | Health & social care | 2016 |
| Epix Studios Limited | Information & communication | 2014 |
| EPM (London) Ltd | Professional & scientific | 2008 |
| EPN Construction Ltd | Construction | 2016 |
| Epping Piggeries Limited | Real estate | 1950 |
| Epps Builders Limited | Extraterritorial | 2001 |
| Epps Developments Limited | Construction | 2013 |
| Epps Training Development Limited | Professional & scientific | 2006 |
| EPS Design Ltd | Administrative & support | 2015 |
| Equalis Accounting Ltd | Professional & scientific | 2018 |
| Equanimity Consultancy Ltd | Professional & scientific | 2025 |
| Equatia Limited | Wholesale & retail | 1999 |
| Equicheck AI Limited | Information & communication | 2026 |
| Equimerge Solutions Ltd | Professional & scientific | 2023 |
| Equine Dental Care Limited | Extraterritorial | 2011 |
| Equip Group Ltd | Financial services | 2025 |
| Equip Scaffolding Hire Ltd | Construction | 2025 |
| Equip Scaffolding Ltd | Construction | 2016 |
| EQUIP247UK Limited | Wholesale & retail | 2017 |
| Equus Construction (Kent) Ltd | Construction | 2025 |
| Equus Plant Hire Ltd | Construction | 2018 |
| ER Services (London) Ltd | Professional & scientific | 2014 |
| Erfolg Financial Regulatory Consulting Ltd | Public administration | 2019 |
| Erigo Associates Ltd | Professional & scientific | 2025 |
| Erigo Connections Ltd | Wholesale & retail | 2025 |
| Erigo Services Ltd | Construction | 2026 |
| Eroberto Ltd | Public administration | 2023 |
| ERP Training Ltd | Education | 2019 |
| Erpworks UK Solutions Limited | Information & communication | 2023 |
| Errwood Property Ltd | Real estate | 2008 |
| Errwood Publishing Ltd | Information & communication | 2022 |
| ERT Transport Ltd | Administrative & support | 2026 |
| Eruth Ltd | Wholesale & retail | 2020 |
| Esbet Foods Ltd | Hospitality | 2024 |
| Escape Park Catering Limited | Hospitality | 2020 |
| Escape the Daily Grind Limited | Hospitality | 2013 |
| Eskimomo Limited | Real estate | 2021 |
| Espanarose Cleaning Products Ltd | Administrative & support | 2024 |
| Espiro Media Ltd. | Information & communication | 2012 |
| Esplanade Homes Limited | Real estate | 2026 |
| Espley's Construction Ltd | Construction | 2024 |
| Espressbros Limited | Hospitality | 2025 |
| Essar International Limited | Wholesale & retail | 2022 |
| Essence of Gaia Ltd | Wholesale & retail | 2025 |
| Essential Service Providers Limited | Administrative & support | 2000 |
| Essential Wedding Films Limited | Information & communication | 2025 |
| Essentials Household Limited | Wholesale & retail | 2003 |
| Essentials Vogue UK Ltd | Wholesale & retail | 2025 |
| Essyp Technologies Limited | Wholesale & retail | 2026 |
| Est-Rich Holdings Limited | Health & social care | 2018 |
| Estate Agency Appointments Limited | Professional & scientific | 2004 |
| Estate Agent Pro Limited | Information & communication | 2018 |
| Estate Centre Limited | Real estate | 2023 |
| Estee Beauty Limited | Other services | 2019 |
| ET in Arcadia EGO Limited | Wholesale & retail | 2020 |
| Etab-Recruits Limited | Administrative & support | 2025 |
| Etang Baits Limited | Agriculture & fishing | 2018 |
| ETC Recovery Ltd | Wholesale & retail | 2021 |
| Etchden Court Farm Ltd | Agriculture & fishing | 2020 |
| Etched in Glass Colourworks Ltd | Arts & recreation | 2015 |
| Eterex UK Limited | Real estate | 2012 |
| Eternal Shots Ltd | Wholesale & retail | 2023 |
| Ethersure Limited | Information & communication | 1988 |
| Ethical Regeneration Limited | Real estate | 2019 |
| Etoeko International Edventures Ltd | Education | 2025 |
| ETS Roofing Ltd | Construction | 2023 |
| EU News Database Ltd | Information & communication | 2021 |
| EU Reporter Limited | Information & communication | 2010 |
| EUR Developments Ltd | Construction | 2025 |
| Eureka Box 23 Ltd | Hospitality | 2024 |
| Euroglobex Limited | Transport & logistics | 2024 |
| Eurolanka Global Ltd | Wholesale & retail | 2020 |
| Europe Centre Ltd | Wholesale & retail | 2016 |
| Europe in England Limited | Administrative & support | 1999 |
| European College of Law Ltd | Education | 2024 |
| European Eyecare Limited | Health & social care | 2004 |
| European Gateway Limited | Information & communication | 2018 |
| European Speechwriter Network Ltd | Information & communication | 2015 |