| Elliroux Notts Investments Ltd | Real estate | 2019 |
| Ellisclare Limited | Construction | 2015 |
| Ellpress Limited | Professional & scientific | 2016 |
| Ellum Limited | Information & communication | 2021 |
| ELM Grove Food & Wine Ltd | Wholesale & retail | 2016 |
| Elphick Chiropractic Limited | Health & social care | 2014 |
| Elpro UK Limited | Administrative & support | 2008 |
| Elreg House Limited | Health & social care | 2012 |
| ELS Capital Limited | Financial services | 2023 |
| Eltra Electrical Limited | Construction | 1995 |
| Elverlands Ltd | Professional & scientific | 2018 |
| Elysium Car Sales Ltd | Wholesale & retail | 2016 |
| EM Media Ltd | Other services | 2025 |
| Emaci 2028 Ltd | Arts & recreation | 2026 |
| Ember Holdings Limited | Information & communication | 2022 |
| Embered Food and Beverage Ltd | Hospitality | 2024 |
| Emea Power Limited | Professional & scientific | 2016 |
| Emerald Conveyancing LLP | | 2017 |
| Emerald Elderly Care Ltd | Health & social care | 2026 |
| Emerald Finance Limited | Financial services | 2005 |
| Emerging Landscape Design Limited | Administrative & support | 2015 |
| Emily Gunnis Ltd | Arts & recreation | 2018 |
| Emilyvicuk Limited | Information & communication | 2015 |
| Eminence Management Ltd | Professional & scientific | 2021 |
| Eml.Claims Ltd | Water & waste | 2019 |
| Emma Hopper Limited | Other services | 2016 |
| Emma Wells Limited | Health & social care | 2016 |
| Emmerald Estates Ltd | Real estate | 2024 |
| Emmerton Developments Limited | Construction | 1965 |
| Empire Environmental Services Limited | Water & waste | 2015 |
| Empire Property Facilities Ltd | Administrative & support | 2009 |
| Employment Guardian Limited | Professional & scientific | 2013 |
| Empyraen Property Maintenance Limited | Administrative & support | 2018 |
| Empyraen Secretaries Limited | Professional & scientific | 2007 |
| Empyrean Audio Limited | Administrative & support | 2018 |
| Emru Holdings Limited | Financial services | 2018 |
| Emsach Technologies Limited | Administrative & support | 2019 |
| Emsee Consulting Ltd | Information & communication | 2015 |
| Emugen Energy Limited | Professional & scientific | 2018 |
| Emunah Interior Ltd | Wholesale & retail | 2024 |
| EMZ Studio Limited | Other services | 2026 |
| Enaccord Limited | Construction | 2001 |
| Enad Services Limited | Education | 2025 |
| Enamelhappy Limited | Wholesale & retail | 2019 |
| Enchanted Horsham Limited | Administrative & support | 2017 |
| Enchanted Places Ltd | Arts & recreation | 2015 |
| Encore Vocal Choir Ltd | Arts & recreation | 2020 |
| Eneco Consulting Limited | Professional & scientific | 2005 |
| Enemydown Ltd | Professional & scientific | 2024 |
| Energy Design Solutions Ltd | Construction | 2009 |
| Energy Market Square Ltd | Information & communication | 2015 |
| Energy Storage Publishing Holdings Limited | Financial services | 2018 |
| Energy Storage Publishing Ltd | Information & communication | 2002 |
| Energypathways Irish Sea Limited | Mining & quarrying | 2021 |
| Energypathways PLC | Financial services | 2021 |
| Energypathways UK Holdings Ltd. | Mining & quarrying | 2021 |
| Enfield Rolling Mills,Limited | Professional & scientific | 1924 |
| Engage Resources Limited | Information & communication | 2015 |
| Engaging Conversations Ltd | Professional & scientific | 2013 |
| Engam Limited | Manufacturing | 2010 |
| English Like a Native Limited | Education | 2021 |
| Enhance Developments J D Ltd | Real estate | 2019 |
| Enhance Developments Limited | Construction | 2007 |
| Enhance Electrical Services Ltd | Construction | 2016 |
| Enhance Power Solutions Ltd | Construction | 2024 |
| Enhanced Clinical Aesthetics Ltd | Other services | 2021 |
| Enigma Health and Safety Management Limited | Professional & scientific | 2015 |
| Enlight Pilates Studios Ltd | Arts & recreation | 2025 |
| Enso Health Ltd | Health & social care | 2012 |
| Ensogram Limited | Information & communication | 2009 |
| Ensonglopedia | Arts & recreation | 2019 |
| Enterprise Efficiency & Effectiveness Ltd | Professional & scientific | 2015 |
| Environmental Design & Management Consultants Limited | Professional & scientific | 2001 |
| Envis Foods Limited | Wholesale & retail | 1958 |
| Envoda Limited | Real estate | 2005 |
| ENZ Care Limited | Health & social care | 2019 |
| ENZ Limited | Administrative & support | 2017 |
| Eodex Group Limited | Financial services | 2025 |
| Eodex Holdings Limited | Financial services | 2025 |
| Eodex UK - Defence Ltd | Professional & scientific | 2018 |
| Eodex UK - Management Ltd | Professional & scientific | 2018 |
| Eodex UK - Subsea Ltd | Professional & scientific | 2018 |
| Eodex UK Ltd | Professional & scientific | 2017 |
| EOS Lighting Ltd | Manufacturing | 2015 |
| Eostre Ltd | Wholesale & retail | 2023 |
| EP Comps Ltd | Arts & recreation | 2024 |
| EP Pro Exterior Cleaning Ltd | Administrative & support | 2026 |
| Ephraim Healthcare Ltd | Health & social care | 2022 |
| EPI Labels Limited | Manufacturing | 2010 |
| Epione Medical Services Ltd | Education | 2010 |
| Epuk Trading Ltd | Wholesale & retail | 2025 |
| Eqss International Ltd | Professional & scientific | 2024 |
| Equico Group Ltd | Administrative & support | 2025 |
| Equilibrium Therapy Clinic Limited | Health & social care | 2016 |
| Equiniti (UK) Finance Ltd | Financial services | 2017 |
| Equiniti Benefactor Limited | Administrative & support | 2002 |
| Equiniti Corporate Nominees Limited | Administrative & support | 1999 |
| Equiniti Data Limited | Information & communication | 2005 |
| Equiniti David Venus Limited | Administrative & support | 2007 |
| Equiniti Finance (Holdings) Ltd | Financial services | 2017 |