| English National Opera | London | 1947 |
| English Pro Musica | Chesterfield | 2003 |
| English Rose String Quartet Limited | London | 1994 |
| English Schools' SKI Association Limited | Liverpool | 2012 |
| English Sports Development Trust Limited | Loughborough | 2001 |
| English Stage Company Limited(The) | London | 1954 |
| English Subbuteo Association Limited | Gravesend | 2024 |
| English Table Tennis Association Limited | Milton Keynes | 2001 |
| English Target Shooting Federation Limited | Tattenhall | 2003 |
| English Touring Opera Limited | Sheffield | 1979 |
| English Touring Theatre Limited | | 1992 |
| English Voices Singers Ltd. | London | 2011 |
| English Volleyball Association Limited | Loughborough | 1986 |
| Engolf Ltd | Wallingford | 2019 |
| Engraved by Lave Ltd | Telford | 2025 |
| Enhance Fitness Limited | London | 2017 |
| Enhance JLR Ltd | Colchester | 2022 |
| Enhance Old Town Limited | London | 2023 |
| Enhance Performance Coaching Ltd | Colchester | 2026 |
| Enhance Performance Ltd | Manchester | 2025 |
| Enhance Performance Systems Limited | Holywood | 2019 |
| Enhance Physique Ltd | Manchester | 2024 |
| Enhance Sports Group Limited | Stockport | 2022 |
| Enhance Training Performance Academy Ltd | Cwmbran | 2025 |
| Enhance Wellness Ltd | Colchester | 2026 |
| Enhanced Football Coaching Ltd | Merthyr Tydfil | 2025 |
| Enhanced Masters of Art and Technology Limited | Bristol | 2017 |
| Enhanced Performance Supplements Ltd | Newark | 2023 |
| ENI ENT Ltd | Gatwick | 2021 |
| Enigma City Ltd | Folkestone | 2025 |
| Enigma Concerts Ltd | Halesowen | 2025 |
| Enigma Escape Limited | London | 2014 |
| Enigma Escape Rooms Ltd | Ware | 2024 |
| Enigma Fight Series Ltd | London | 2024 |
| Enigma Fitness Limited | Milton Keynes | 2019 |
| Enigma Fusion Limited | Hook | 2011 |
| Enigma Imagery Ltd | Dover | 2019 |
| Enigma London Ltd | Uxbridge | 2022 |
| Enigma Media Limited | London | 2026 |
| Enigma Motorsport Limited | Letchworth | 2008 |
| Enigma Music Services Ltd | Stevenage | 2019 |
| Enigma Performance Centre Ltd | Wigan | 2026 |
| Enigma Productions Limited | London | 1976 |
| Enigma Projekt Limited | Hailsham | 2025 |
| Enigma Records Limited | Whitchurch | 2019 |
| Enigma Rooms Grimsby Ltd | London | 2023 |
| Enigma Rooms Leisure (Doncaster) Ltd | Doncaster | 2026 |
| Enigma Rooms Leisure (Hull) Ltd | Doncaster | 2026 |
| Enigma Rooms Leisure (Pontefract) Ltd | Doncaster | 2026 |
| Enigma Rooms Leisure Ltd | Doncaster | 2026 |
| Enigma Rooms Ltd | Doncaster | 2018 |
| Enigma Running Limited | Milton Keynes | 2015 |
| Enigma Talent Ltd | Harrow | 2020 |
| Enigma Variations: the SIR Edward Elgar Immersive Experience. Ltd. | Droitwich Spa | 2026 |
| Enigmania Limited | Chichester | 1987 |
| Eniko Tattoo Ltd | Worcester | 2026 |
| Eniola Dare Limited | Surrey | 2026 |
| Enjoy Arts CIC | Stockport | 2016 |
| Enjoy East Lothian Limited | Musselburgh | 2009 |
| Enjoy East Lothian Trading Limited | Musselburgh | 2013 |
| Enjoy Fitness Limited | Southampton | 2025 |
| Enjoy Irresponsibly Events Ltd | Burgess Hill | 2025 |
| Enjoy Tomorrow Limited | Croydon | 2025 |
| Enjoy Wellness Centre Limited | Clitheroe | 2014 |
| Enjoy-A-Ball (UK) Limited | Dunfermline | 2006 |
| Enjoy-Able Art CIC | Aviemore | 2025 |
| Enjoyable Entertainments Ltd | Minehead | 2023 |
| Enkh Star Ltd | London | 2017 |
| Enki Collective Limited | Sheffield | 2020 |
| Enkuuka YA Buganda Ltd | Anerley | 2024 |
| Enlight Land Ltd | London | 2023 |
| Enlight Pilates Studios Ltd | Worthing | 2025 |
| Enlighten Ventures Ltd | London | 2025 |
| Enlightened Group Ltd | Bristol | 2025 |
| Enlightened Lighting Limited | Bristol | 1999 |
| Enlightenup Ltd | Oxford | 2019 |
| Enlite Fitness Limited | London | 2011 |
| Enlx Ltd | Bristol | 2025 |
| Enmascarada Entertainment, Ltd. | Dundee | 2010 |
| Enmei Bayswater Limited | London | 2026 |
| Enmei Canary Wharf Limited | London | 2026 |
| Enmei Holding Limited | London | 2024 |
| Enmei Knightsbridge Limited | London | 2024 |
| Enmei London Bridge Limited | London | 2025 |
| Enmei Marylebone Limited | London | 2025 |
| Enmei Shoreditch Limited | London | 2026 |
| Enmore Park Golf Club Limited | Bridgwater | 2015 |
| ENN Sports Limited | Bristol | 2025 |
| Ennine Limited | London | 2018 |
| Ennis Rock Ltd | Enniskillen | 2022 |
| Enniskillen & District Motorcycle Club Limited | Enniskillen | 2021 |
| Ennittproteam Ltd | Hull | 2025 |
| Enpointe Dance Company Ltd | Darlington | 2021 |
| Enpointe Productions Ltd | Market Drayton | 2022 |
| ENRICH360 Ltd | London | 2018 |
| Enrich: Your Fitness Ltd | Bromsgrove | 2021 |
| Enriching Communities C.I.C. | Heanor | 2020 |
| Enrico David Ltd | London | 2013 |
| Enrique Sarano Ltd | Bloxham | 2025 |
| Enrych Living Ltd | Romford | 2025 |