| EPC East Midlands Ltd | Professional & scientific | 2026 |
| EPG Energy Intl Limited | Construction | 2026 |
| EPI Advisory Services Limited | Professional & scientific | 2018 |
| Epic Buddies Ltd | Manufacturing | 2021 |
| Epic Couriers 786 Limited | Transport & logistics | 2019 |
| Epic Holdings (Europe) Ltd | Real estate | 2015 |
| Epic Partners | Education | 2011 |
| Epic Storytelling Ltd. | Arts & recreation | 2019 |
| Epid Limited | Real estate | 2025 |
| Epigram Games Limited | Wholesale & retail | 2024 |
| Epiluse Consulting Ltd | Professional & scientific | 2016 |
| Epiphany Promotions Limited | Administrative & support | 2018 |
| Epiretinal Limited | Health & social care | 2019 |
| EPJ Associates London Limited | Real estate | 2025 |
| EPJ Associates Ltd | Wholesale & retail | 2004 |
| Epos Ready Ltd | Information & communication | 2017 |
| Eposgo Limited | Wholesale & retail | 2025 |
| Epoxy LAB Ltd | Construction | 2021 |
| Epperstone By-Pass Garage Limited | Wholesale & retail | 2006 |
| Epperstone Properties Ltd | Construction | 2026 |
| EPQ Skills Limited | Professional & scientific | 2022 |
| EPS EOT Limited | Financial services | 2022 |
| EPS Property Solutions Ltd | Construction | 2026 |
| EPS Sales Ltd | Agriculture & fishing | 2025 |
| EPS Solutions (UK) Limited | Wholesale & retail | 2006 |
| Epsilon Auto Technologies Limited | Professional & scientific | 2018 |
| EQ Commercial Consulting Limited | Professional & scientific | 2023 |
| EQ Entertainment Limited | Hospitality | 2010 |
| Eqra Limited | Wholesale & retail | 2022 |
| Equal Feet Ltd | Manufacturing | 2021 |
| Equality Care Ltd | Public administration | 2025 |
| Equalocean Limited | Other services | 1993 |
| Equals Trading Company Ltd | Education | 2016 |
| Equals Trust | Education | 2016 |
| Equaltrans Limited | Real estate | 1988 |
| Equation Nottinghamshire | Other services | 2002 |
| Equi-Therapy UK Limited | Other services | 2006 |
| Equibox Jumps Ltd | Arts & recreation | 2019 |
| Equideck Limited | Construction | 2000 |
| Equinest Ltd | Real estate | 2022 |
| Equinig Capital Ltd | Real estate | 2025 |
| Equinox Accounting Limited | Professional & scientific | 2022 |
| Equinox Business Developments Limited | Professional & scientific | 2015 |
| Equinox Media and Events Ltd | Information & communication | 2014 |
| Equinox Moon Limited | Other services | 2023 |
| Equip Education and Support Services Ltd | Education | 2012 |
| Equipment and Maintenance Solutions Ltd | Manufacturing | 2010 |
| EQUIPPED2SUCCEED Limited | Administrative & support | 2019 |
| Equipsure Limited | Manufacturing | 2017 |
| Equitix Education (Derbyshire) Holdings Ltd | Professional & scientific | 2008 |
| Equitix Education (Derbyshire) Ltd | Financial services | 2008 |
| Equitix Giraffe Finco Limited | Financial services | 2018 |
| Equitix Giraffe Holdco Limited | Financial services | 2018 |
| Equitix Kessingland Limited | Energy | 2007 |
| Equitix Proton Cancer Centre LLP | | 2021 |
| Equitix Rory Limited | Financial services | 2019 |
| Equitix Rory Midco Limited | Financial services | 2019 |
| Equitix Rory Topco Limited | Financial services | 2019 |
| Equitix Wern DDU Limited | Energy | 2002 |
| Equity 55 (Financial Solutions) Ltd | Financial services | 2020 |
| Equity 55 Limited | Extraterritorial | 2021 |
| ERA Accountants Ltd | Professional & scientific | 2021 |
| ERA AI Ltd | Professional & scientific | 2026 |
| ERA Leisure 1 Limited | Hospitality | 2011 |
| ERA Leisure 2 Limited | Hospitality | 2011 |
| ERA Leisure 3 Limited | Financial services | 2012 |
| ERA Leisure 4 Limited | Arts & recreation | 2014 |
| Eraring Ltd | Administrative & support | 2017 |
| Eray Apps Ltd | Information & communication | 2021 |
| ERAZED4GOOD Limited | Information & communication | 2023 |
| Erbil Barber Ltd | Other services | 2021 |
| Erdogan Property Group Ltd | Real estate | 2025 |
| Eresearchtechnology Limited | Professional & scientific | 1987 |
| Eresearchtechnology UK 1 Limited | Professional & scientific | 2010 |
| Eresearchtechnology UK 2 Limited | Professional & scientific | 2010 |
| Erewash Blinds Limited | Construction | 2007 |
| Erewash Community Media CIC | Professional & scientific | 2026 |
| Erewash Garage Limited | Wholesale & retail | 1994 |
| Erewash Holdings Limited | Transport & logistics | 2019 |
| Erewash Services Limited | Administrative & support | 2012 |
| Erewash Voluntary Action - Council for Voluntary Service | Health & social care | 1998 |
| ERF Electrical Wholesalers Ltd. | Wholesale & retail | 1967 |
| Erfinden Limited | Information & communication | 2017 |
| Ergo Electricals LLP | | 2007 |
| ERI C Limited | Hospitality | 2024 |
| Eric Howard Carpentry Ltd | Construction | 2025 |
| Eric Newman Associates Limited | Professional & scientific | 1968 |
| ERICA07 Ltd | Transport & logistics | 2025 |
| Erick Construction Limited Ltd | Construction | 2024 |
| Ericson Group Ltd | Financial services | 2024 |
| Eriesis Healthcare Group Ltd. | Administrative & support | 2023 |
| Eriesis Homescape Ltd | Hospitality | 2025 |
| Erijas Limited | Wholesale & retail | 2021 |
| Erinstar Limited | Professional & scientific | 1996 |
| Eritit Limited | Transport & logistics | 2024 |
| Erjon Holdings Ltd | Financial services | 2021 |
| Erjon Properties Limited | Real estate | 2018 |
| Ermine Retail Limited | Hospitality | 2020 |
| Erms Limited | Information & communication | 1999 |
| ERN Consultants Limited | Health & social care | 2009 |