| Essex Retirement Homes Limited | Real estate | 2016 |
| Estbury Basements Limited | Construction | 2009 |
| Estbury Design Limited | Professional & scientific | 2014 |
| Ester Consultancy Limited | Professional & scientific | 2005 |
| Esther Developments Limited | Construction | 2013 |
| Estro Tech Consulting Limited | Construction | 2011 |
| Esty Ltd | Professional & scientific | 2021 |
| ET2C International (UK) Limited | Administrative & support | 2013 |
| Etch London Limited | Manufacturing | 2023 |
| Etco Services Ltd | Construction | 2025 |
| ETE05 Ltd | Administrative & support | 2018 |
| ETF Engineering Ltd | Professional & scientific | 2003 |
| ETF Group Advisors Ltd | Professional & scientific | 2003 |
| Ethereal Sculpt Aesthetics Ltd | Health & social care | 2024 |
| Ethnic Minority Business Network CIC | Other services | 2025 |
| Ethos Cheshunt Ltd | Arts & recreation | 2026 |
| Ethos Hertford Ltd | Arts & recreation | 2026 |
| Ethos Property Holdings Ltd | Real estate | 2026 |
| Ethos UK Holdings Ltd | Financial services | 2026 |
| Etoile Blue Ltd | Wholesale & retail | 2019 |
| EU Travel Agency Limited | Administrative & support | 2020 |
| Euanthus Limited | Information & communication | 2020 |
| Euclid Lighting Limited | Manufacturing | 2010 |
| Eurasia Stones Ltd | Wholesale & retail | 2014 |
| Eurhythmy Architecture Ltd | Professional & scientific | 2020 |
| Euro Car Spares Ltd | Wholesale & retail | 2025 |
| Euromobile International Dooh Limited | Professional & scientific | 2001 |
| Eurospark Global Limited | Wholesale & retail | 2003 |
| Eutopia Shows Limited | Hospitality | 2026 |
| Eutopia Smart Solutions Ltd | Professional & scientific | 2024 |
| EV ADN Limited | Administrative & support | 2025 |
| EV Charge Services Limited | Administrative & support | 2025 |
| Eva-G Visuals Ltd | Information & communication | 2022 |
| Evaapio Ltd | Arts & recreation | 2019 |
| Evakat Investments Ltd | Financial services | 2020 |
| Evamina Limited | Real estate | 2015 |
| Evans Mockler Limited | Professional & scientific | 2002 |
| Evantis Ltd | Information & communication | 2007 |
| EVE Hughes Marketing Limited | Professional & scientific | 2025 |
| EVE Tech Ltd | Information & communication | 2026 |
| Evecross Limited | Administrative & support | 2007 |
| Evelina's Patisserie Limited | Manufacturing | 2014 |
| Event Logistics & Design Limited | Administrative & support | 2023 |
| Event Serve Co Ltd | Hospitality | 2019 |
| Eventi Consulting Ltd | Professional & scientific | 2021 |
| Ever Brite Medical Cleaning Services Ltd | Administrative & support | 2015 |
| Evercrest GAS and Heating Limited | Construction | 2026 |
| Evereverest Ltd | Health & social care | 2024 |
| Evergreen Arts Ltd | Arts & recreation | 2017 |
| Everkynd Ltd | Real estate | 2025 |
| Everlight Estates Limited | Real estate | 2024 |
| Everlong Retreats Ltd | Real estate | 2025 |
| Evermind Digital Ltd. | Information & communication | 2013 |
| Eversholt Court (Barnet) Management Company Limited | Households | 1987 |
| Everthrive Estates Limited | Real estate | 2022 |
| Everything Genetic Ltd | Other services | 2016 |
| Everything's Yummy Ltd | Hospitality | 2012 |
| Eviglam's Limited | Other services | 2023 |
| EVO Facades Limited | Construction | 2018 |
| Evolve Building Construction Ltd | Construction | 2025 |
| Evri Investments Limited | Real estate | 2017 |
| EWC South East Limited | Construction | 2014 |
| Exall Productions Ltd | Arts & recreation | 2007 |
| Excel Accounting Services (UK) Limited | Professional & scientific | 2012 |
| Excel RAE Properties Ltd | Real estate | 2018 |
| Excellence Estates Ltd | Real estate | 2019 |
| Excellence Hair Ltd | Other services | 2016 |
| Excellent Cleaning Solutions Ltd | Administrative & support | 2015 |
| Excellent Healthcare Planet Limited | Health & social care | 2023 |
| Excellere Consultants Limited | Information & communication | 2014 |
| Excelsior Property Investments Limited | Real estate | 2017 |
| Exceptional Prime Properties Ltd | Real estate | 2025 |
| Exclusive Chroming Limited | Other services | 2018 |
| Exfam Ltd | Professional & scientific | 2022 |
| Exidium Properties Limited | Real estate | 1986 |
| Exitbetter Ltd | Administrative & support | 2025 |
| EXO Studio Ltd | Professional & scientific | 2025 |
| Exosmile Ltd | Manufacturing | 2024 |
| Expectation Mgmt Ltd | Arts & recreation | 2024 |
| Expert Polishers Ltd | Manufacturing | 2020 |
| Exploration Architecture Limited | Professional & scientific | 2007 |
| Exploring Agility Limited | Information & communication | 2011 |
| Expopet Green INT. Ltd | Wholesale & retail | 2011 |
| Expopet Limited | Manufacturing | 2008 |
| Export Autos Limited | Wholesale & retail | 2025 |
| Express Stairs London Ltd | Manufacturing | 2025 |
| Express Telephony Limited | Construction | 2009 |
| Expressive ICT Limited | Information & communication | 2005 |
| Extend Education Ltd | Information & communication | 2018 |
| Extreme Drainage Ltd | Administrative & support | 2026 |
| Eyecura Limited | Health & social care | 2022 |
| Ezel Esin Limited | Hospitality | 2020 |
| Ezey Consultancy Ltd | Professional & scientific | 2022 |
| F & B Contractors Ltd | Construction | 2021 |
| F a Handyman Limited | Construction | 2025 |
| F C Exports Limited | Wholesale & retail | 2003 |
| F C Properties (London) Limited | Real estate | 2016 |
| F Silverstone Training Limited | Administrative & support | 2020 |
| F.A.T Structures Ltd | Professional & scientific | 2018 |
| F.T.L. Trading Ltd | Administrative & support | 2018 |