| Erith Theatre Guild Limited | Erith Kent | 1947 |
| Erith Town Football Club (2017) Limited | Orpington | 2017 |
| Erlyco Gym Limited | Stalybridge | 2026 |
| ERM (Eastern Region Media) CIC | Norwich | 2011 |
| Erne Adventures Limited | Enniskillen | 2023 |
| Erne Boat Hire Limited | Carrickfergus | 2016 |
| Erne Paddlers | Enniskillen | 2016 |
| Erne Vintage Car Club Limited | Enniskillen | 2006 |
| Erne West Regeneration T/A Teemore Sports Development Limited | Teemore | 2025 |
| Ernest Edits Limited | London | 2000 |
| Ernest Entertainment Group Ltd | Bristol | 2025 |
| Ernest Music Limited | Glasgow | 2017 |
| Ernest Parks & Events Limited | Bristol | 2026 |
| Ernest Sports Ltd | Bristol | 2026 |
| Ernesto Canovas Studio Ltd | London | 2014 |
| Ernie Coates Track Days Ltd | Ballyclare | 2021 |
| Ernie the Dog Limited | London | 2017 |
| Erodynamic Training Limited | Leeds | 2023 |
| Eros Siringo Professional Tennis Coaching Ltd | Nelson | 2022 |
| Erotic Secrets of Pompeii Ltd | Bristol | 2024 |
| Erotica Gardens Ltd | Colchester | 2017 |
| Erreformer Ltd | Hull | 2020 |
| Errigal Consultancy Ltd | Dungannon | 2023 |
| Errigal Productions Limited | London | 1994 |
| Errinella Limited | London | 2003 |
| Errol Outdoor Activities Limited | Errol | 2007 |
| Errolbrook Limited | London | 1983 |
| Erskf Karate Club Ltd | Dartford | 2016 |
| Erskine Arts | Erskine | 2014 |
| Erskine Golf Club Limited | Bishopton | 1935 |
| Erskine Records Limited | London | 2016 |
| Erspinecare Ltd | Hull | 2020 |
| Ertheo Limited | London | 2022 |
| Erymanthian Ltd | London | 2021 |
| Eryri Limited | Anglesey | 1998 |
| ES 1961 Ltd | London | 2020 |
| ES Charters Ltd | London | 2022 |
| ES Collective Group Ltd | London | 2026 |
| ES Equestrian Services Ltd | Yarmouth | 2024 |
| ES Lifestyle Ltd | Liverpool | 2016 |
| ES Moylan Limited | St. Albans | 2009 |
| ES Sports Limited | New Malden | 2023 |
| ES Topsport Limited | Banbury | 2003 |
| Es-O Racing Limited | Hungerford | 2023 |
| ES07 Limited | Tiverton | 2026 |
| Esakhelvi Music Academy & Promotions Limited | London | 2025 |
| Esanef Ltd | Stafford | 2021 |
| Esbeare Ltd. | Wirral | 2023 |
| Esbrboxing Ltd | London | 2022 |
| ESC Dance Management Ltd | Chesterfield | 2015 |
| ESC Films Ltd | Belfast | 1999 |
| ESC Media Group Ltd | Manchester | 2016 |
| ESC Sport Limited | Glasgow | 2014 |
| Esc-Room Limited | St. Ives | 2017 |
| Escal Investments Limited | Barry Island | 1972 |
| Escala Music Limited | Southwark | 2011 |
| Escalade Weston Ltd | Churchill | 2025 |
| Escalator Productions CIC | Colchester | 2012 |
| Escapade Aqua Park Colwick Limited | Nottingham | 2018 |
| Escapade Dance Academy Limited | Derby | 2021 |
| Escapade Group Limited | Epsom | 2011 |
| Escapade HQ Ltd | Belfast | 2018 |
| Escapade Ltd | Reading | 2020 |
| Escapade Mountaineering Ltd. | Arbroath | 2019 |
| Escapageddon Limited | Halifax | 2020 |
| Escapaholics Ltd | Milton Keynes | 2016 |
| Escapar Ltd | London | 2018 |
| Escape (Derby) Ltd | Preston | 2016 |
| Escape (LIV) Ltd | Preston | 2016 |
| Escape (Shef) Ltd | Preston | 2017 |
| Escape 2 Play Limited | Mansfield | 2015 |
| Escape 360 Limited | London | 2015 |
| Escape and Break Ltd | Manchester | 2025 |
| Escape and Create Limited | St. Ives | 2015 |
| Escape Artist Management Ltd | London | 2011 |
| Escape Artists Limited | Torquay | 2002 |
| Escape Aviemore Ltd | Aviemore | 2021 |
| Escape Beauty and Wellbeing Limited | Thrapston | 2007 |
| Escape Berwick Ltd | Berwick-Upon-Tweed | 2019 |
| Escape Brum Limited | Birmingham | 2017 |
| Escape Chorley Ltd | Chorley | 2025 |
| Escape Coalville Limited | Coalville | 2024 |
| Escape Community Hub CIC | Dundee | 2024 |
| Escape Dundee Ltd | Dundee | 2024 |
| Escape Envelope Ltd | Glasgow | 2023 |
| Escape Everything Ltd. | Kettering | 2014 |
| Escape Experience Limited | Slough | 2018 |
| Escape From the Room Limited | Sutton | 2024 |
| Escape Game Enterprises Ltd | Brighton | 2015 |
| Escape Game Events Ltd | Chesterfield | 2015 |
| Escape Games Chelmsford Ltd | Meridian Business Park | 2019 |
| Escape Games Essex Limited | Meridian Business Park | 2015 |
| Escape Games Leeds Ltd | Leeds | 2021 |
| Escape Great Yarmouth Limited | Great Yarmouth | 2021 |
| Escape Hub Limited | Maidstone | 2017 |
| Escape Hunt USA Franchises Ltd | London | 2020 |
| Escape in 60 Limited | Chertsey | 2019 |
| Escape Ipswich Limited | Hadleigh | 2017 |
| Escape Kent Ltd | Canterbury | 2016 |
| Escape Leamingtonspa Ltd | Leamington Spa | 2020 |