| Envirophone Limited | Harrogate | 2011 |
| Enviropro Limited | Portsmouth | 1995 |
| Envirosol Limited | Burntwood | 1989 |
| Envirotec Controls UK Limited | Hornchurch | 2011 |
| Envirotechnic Limited | Redhill | 1983 |
| Enviroval Limited | Northampton | 2001 |
| Envirowaste (Southern) Ltd | Fareham | 2006 |
| Envirowaste Inc Ltd | Graveley | 2010 |
| Envirowattle Ltd | Bolton | 2011 |
| Envisage Childrens Care Limited | Wolverhampton | 2020 |
| Envisage Classic & Bespoke Limited | Coventry | 2011 |
| Envisage Live Limited | Stoke On Trent | 2023 |
| Envisage Spaces Group Limited | Stoke On Trent | 2023 |
| Envision Energy Limited | Kettering | 2022 |
| Envision Energy Solutions Ltd | Salford | 2015 |
| Envision Financial Solutions Limited | Sandhurst | 2013 |
| Envision Market Access Solutions Limited | Horsham | 2015 |
| Envision Training Ltd | Nottingham | 2011 |
| ENVISION4GLASS Limited | Dover | 2012 |
| Envitrol Ltd | Hereford | 2023 |
| Envoflute Ltd | Watford | 2026 |
| Envomax Technologies Limited | Maidstone | 2012 |
| Envoy Recruitment Ltd | York | 2000 |
| Envoyager Ltd | Purley | 2011 |
| Enworld Group Co., Ltd | Beckenham | 2020 |
| Enzo Cars Limited | Sunbury-On-Thames | 2021 |
| Enzo Security Ltd | Glasgow | 2021 |
| Enzo's Developments Latep (SPV2) Limited | London | 2022 |
| EO Limited | Newmarket | 2008 |
| EO Restaurant Limited | Elstead, Godalming | 2012 |
| Eocene Property Developments Limited | Barnet | 2016 |
| EOD Management Ltd | Godalming | 2017 |
| Eoghan RUA Ireland NO.249 Limited | Belfast | 2024 |
| Eoin Smith Limited | Newry | 2013 |
| EON Commerce Limited | Buckinghamshire | 1999 |
| Eormen Ltd | London | 2026 |
| EOS BBI (KCP Nominees) Ltd | London | 2023 |
| EOS Biotech Co., Ltd | Cambridge | 2011 |
| EOS Construction Limited | Crowborough | 2005 |
| EOX Limited | Waterlooville | 2009 |
| EP Limited | Saffron Walden | 2007 |
| EP Ventures Ltd | Peterborough | 2024 |
| EPA Products U.K. Limited | Hitchin | 2017 |
| Epaod CYF | Bangor | 2025 |
| Epath Limited | Croydon | 2015 |
| Epathusa Limited | Croydon | 2012 |
| EPC Energy Services Ltd | Holyhead | 2022 |
| Epco Property Management Limited | Hornchurch | 2016 |
| Epco Utilities Group Ltd | Aylesbury | 2017 |
| EPE Brand Management Limited | Bradford | 2013 |
| EPE Division Descendants Union | Swanley | 2006 |
| EPF Energy Ltd | Nr Tamworth | 2024 |
| EPF Land Ltd | Nr Tamworth | 2024 |
| EPG Nominees Limited | Reading | 2009 |
| EPH Contractors (Swindon) Limited | Royston | 1959 |
| Ephelia Global Services Ltd | London | 2020 |
| Ephraim Group Limited | Birmingham | 2012 |
| Ephraim Organ & SON Limited | Waterstock | 1958 |
| Ephratah Seed Group Ltd | Sheffield | 2023 |
| EPI Holdings Limited | Cardiff | 1996 |
| Epic 7 Limited | Stirling | 2020 |
| Epic Action Media Ltd | Milton Keynes | 2025 |
| Epic Horsewear Ltd | Blackburn | 2014 |
| Epic Icons Limited | Burgess Hill | 2003 |
| Epic Makers Ltd | Morden | 2016 |
| Epic Performance Engineering Ltd | Colne | 2010 |
| Epic Productions Ltd | Larne | 2020 |
| Epic Projects Limited | London | 2015 |
| Epic Renewables Ltd | Bournemouth | 2025 |
| Epic Suite Limited | Darlington | 2023 |
| Epicenter Market Limited | London | 2013 |
| Epicure Limited | Milton Keynes | 1993 |
| Epicurean 63 Limited | Lichfield | 2019 |
| Epiderm Elite Ltd | Coventry | 2025 |
| Epifini Limited | Bexhill On Sea | 2020 |
| Epig Co., Ltd | London | 2013 |
| Epilepsy Action | Leeds | 2000 |
| Epiphany Media Limited | London | 2015 |
| Epiphany Prime Limited | Bristol | 2016 |
| Episciences UK Limited | Maldon | 2023 |
| Epistata Ltd | London | 2017 |
| Eplay Entertainment Ltd | Tamworth | 2009 |
| Eplim Ltd | Crook | 2013 |
| EPM Construction Consultants Ltd | Melton Mowbray | 2016 |
| EPM Liquitek Ltd | Corby | 2021 |
| Epmc (UK) Limited | Portsmouth | 2009 |
| Epmg Legal Limited | Cambridge | 2011 |
| Epmg Surveyors Limited | Cambridge | 2012 |
| Epoc Developments Limited | Guildford | 2023 |
| Epoch Garden Design Limited | Bletchley | 2020 |
| Epoch Nexus Energy Holding Ltd | Manchester | 2026 |
| Epoch Property Developments Limited | Barnet | 2016 |
| Epok Bikes Limited | Birmingham | 2017 |
| Eponymous Public Relations Limited | London | 2009 |
| Epos Plus Ltd. | Hampshire | 1999 |
| Epower Projects Limited | Shoreham-By-Sea | 2021 |
| EPP (London) Limited | London | 2010 |
| Epping Garden Care Ltd | Epping | 2025 |
| Eppos Ltd | Bristol | 2012 |
| Epps Builders Limited | Ashford | 2001 |