| EPG Contracting Limited | Construction | 2014 |
| EPG Contracts NW Limited | Construction | 2024 |
| EPG Fire Protection Limited | Administrative & support | 2024 |
| EPG Manlet Ltd | Administrative & support | 2014 |
| EPG NW Holdings Limited | Construction | 2024 |
| Ephata Security Limited | Administrative & support | 2018 |
| Ephemera (Retails) Limited | Wholesale & retail | 2026 |
| EPI Americas Ltd | Professional & scientific | 2014 |
| EPI Global Ltd | Administrative & support | 2014 |
| EPI Group Holdings Ltd | Professional & scientific | 2014 |
| Epi-Rp Trading Ltd | Wholesale & retail | 2024 |
| Epi-Use Labs Limited | Information & communication | 2014 |
| Epic Coaching Limited | Education | 2023 |
| Epic Developers Ltd | Construction | 2022 |
| Epic Exprt Ltd | Construction | 2021 |
| Epic Retail Limited | Wholesale & retail | 2018 |
| Epic Roofing Services Ltd | Construction | 2021 |
| Epic Sales Solutions Ltd | Other services | 2025 |
| Epicademy Limited | Information & communication | 2019 |
| Epicland Limited | Arts & recreation | 2026 |
| Epicom International Limited | Water & waste | 2023 |
| Epiderma Distribution Ltd | Wholesale & retail | 2018 |
| Epigram Communications and Design Limited | Administrative & support | 1993 |
| Epigram International Limited | Financial services | 2024 |
| Epil Developments Limited | Real estate | 2016 |
| Epileum Solutions Limited | Information & communication | 2020 |
| Epineio Homes Ltd | Hospitality | 2024 |
| Epione Care (NW) Ltd | Administrative & support | 2021 |
| Epiphany Capital Ltd | Financial services | 2006 |
| Epiphany Investment Limited | Financial services | 2025 |
| Epiphany Properties Ltd | Real estate | 2025 |
| Epiphiny Flow Ltd | Information & communication | 2025 |
| Episaw Limited | Professional & scientific | 2022 |
| Epistem Limited | Professional & scientific | 2017 |
| Epistem SIP Trustee Limited | Administrative & support | 2008 |
| Epistle One Ltd | Administrative & support | 2025 |
| Epitech Ltd | Information & communication | 2017 |
| Epix Holdings Limited | Financial services | 2019 |
| Epix Systems Limited | Information & communication | 1991 |
| EPK Consultancy Ltd | Professional & scientific | 2021 |
| EPK Estates Limited | Professional & scientific | 2015 |
| EPM Coding Services Ltd | Information & communication | 2024 |
| EPM Financial Services Limited | Financial services | 2011 |
| EPM Jobs Limited | Administrative & support | 2019 |
| EPO Lettings Limited | Real estate | 2025 |
| Epoch 8 Limited | Professional & scientific | 2023 |
| Epoch Gaming Ltd | Information & communication | 2025 |
| Epoch Nexus Energy Holding Ltd | Extraterritorial | 2026 |
| Epoch Photography Limited | Professional & scientific | 2025 |
| Epochix Ltd | Information & communication | 2026 |
| Epod Space Ltd | Wholesale & retail | 2025 |
| Eportfolios Ltd | Information & communication | 2016 |
| Epos G-Tech Limited | Wholesale & retail | 2016 |
| Epos Infinity Ltd | Information & communication | 2019 |
| Epos Lite Ltd | Information & communication | 2016 |
| Epoxynova Ltd | Construction | 2026 |
| Eprint Digital Ltd | Administrative & support | 2010 |
| Epropulsion UK Limited | Wholesale & retail | 2022 |
| EPS Legal Services Ltd | Professional & scientific | 2019 |
| Epsar Medical Glasses Ltd | Manufacturing | 2026 |
| Epsenv Limited | Professional & scientific | 2016 |
| Epsilon Building Services Ltd | Construction | 2022 |
| Epsilon for Trading & Services Ltd | Extraterritorial | 2026 |
| Epsom Assets (NO 2) Limited | Extraterritorial | 2014 |
| Epsom Assets Limited | Extraterritorial | 2014 |
| Epsom FQ GP LLP | | 2026 |
| Epsom FQ LP | | 2026 |
| Epsom FQ Nominees 1 Limited | Real estate | 2026 |
| Epsom FQ Nominees 2 Limited | Real estate | 2026 |
| Epsom Security Services Ltd | Administrative & support | 2025 |
| Epstein Audit and Consultancy Limited | Professional & scientific | 2020 |
| EPT Consult Limited | Wholesale & retail | 2010 |
| Epworth Transport Ltd | Transport & logistics | 2019 |
| EQ Costs Ltd | Professional & scientific | 2024 |
| EQ Group Ltd | Health & social care | 2019 |
| EQ Live Event Solutions Limited | Administrative & support | 2022 |
| EQ22 Unlimited | Financial services | 2023 |
| EQ3 Limited | Administrative & support | 2025 |
| Eqms Consulting Ltd | Administrative & support | 2024 |
| Eqsu Ltd | Wholesale & retail | 2023 |
| Eqty in Music Ltd | Arts & recreation | 2012 |
| Equa Medical Ltd | Professional & scientific | 2022 |
| Equal Employer Limited | Administrative & support | 2021 |
| Equal Tea Ltd | Hospitality | 2026 |
| Equaliser Ltd | Professional & scientific | 2024 |
| Equalscale Limited | Administrative & support | 1997 |
| Equalunit Limited | Real estate | 1992 |
| Equanimity Independent Financial Advisers Limited | Financial services | 2004 |
| Equanimity Search Ltd | Administrative & support | 2023 |
| Equatel (UK) Limited | Information & communication | 2012 |
| Equator (GJ) Limited | Professional & scientific | 2009 |
| Equator Motors International Ltd | Administrative & support | 2012 |
| Equator Solar Limited | Energy | 2024 |
| Equest (Hale) Limited | Real estate | 2019 |
| Equest Investments Limited | Real estate | 2025 |
| Equestrian Employment Services Ltd | Other services | 2026 |
| Equgen Ltd | Professional & scientific | 2025 |
| Equi Travel Ltd | Agriculture & fishing | 2026 |
| Equilibrium Forces Limited | Information & communication | 2014 |
| Equilibrium International Limited | Arts & recreation | 2016 |