| Essun Limited | Beckenham | 2006 |
| EST - Energy Systems & Technologies Limited | London | 2006 |
| Esta Desk Ltd | London | 2023 |
| Established Counsel Limited | Bedlington | 2026 |
| Estante 032 Limited | Christchurch | 2017 |
| Estate Administration Limited | Guildford | 2012 |
| Estate Agency Group Ltd | Cardiff | 2020 |
| Estate Insurance Brokers Limited | London | 1999 |
| Estate Planning Limited | Sheffield | 2021 |
| Estate Planning Seminars Ltd | Congleton | 2021 |
| Estate Reservations Ltd | Birmingham | 2023 |
| Estate-Eagle Ltd | Wolverhampton | 2023 |
| Estates of London Limited | Cockfosters | 2018 |
| Estates Solutions Ltd | Braintree | 2025 |
| Estatico Limited | Bristol | 2025 |
| Esteebridge Ltd | Salford | 2003 |
| Esteem EOT Limited | Glasgow | 2022 |
| Estelence Ltd | London | 2012 |
| Estella & Associates Limited | Sutton Coldfield | 2013 |
| Ester RON Van Langen Limited | London | 2023 |
| Esteworld Ltd | London | 2014 |
| Esther & Co Productions Ltd | London | 2024 |
| Esther Boateng Ltd | London | 2022 |
| Esther's Cakes Limited | London | 2012 |
| Esther's Restaurant Ltd | London | 2025 |
| Estilo Group Limited | Halesowen | 2010 |
| Estilo Limited | Halesowen | 2010 |
| Estilo Mechanical Services Limited | Halesowen | 2010 |
| Estilo Translations Ltd | London | 2009 |
| Estimators Limited | Manchester | 2002 |
| Estival Home and Garden Limited | Chertsey | 2019 |
| Estmanco (Watling Avenue) Freehold Limited | Edgware | 2005 |
| Esto Ltd | London | 2025 |
| Estree Holdings Limited | Haywards Heath | 2022 |
| Estreed Ltd | Dagenham | 2021 |
| Estrella Chalus Limited | Beckenham | 2021 |
| Estuary Banks Management Company Limited | Burnley | 2012 |
| Estuary Bathrooms Ltd | Benfleet | 2024 |
| Estuary Waterfront RTM Company Limited | Shoreham-By-Sea | 2025 |
| Estwen Limited | Newark | 2014 |
| Esuasive Limited | London | 1996 |
| Esuk Aerospace and Simulation (Holdings) Limited | London | 1994 |
| Esun Energy Co., Ltd | Manchester | 2013 |
| Esvr Energy Limited | Hertford | 2025 |
| Eswap.Uk Limited | Southminster | 1998 |
| Esyncolor Co., Ltd | Beckenham | 2016 |
| ET Capital Directors Limited | Cambridge | 2024 |
| ET Marine Limited | Chelmsford | 2012 |
| ET1 Limited | Spalding | 1999 |
| ET4U Ltd | Didcot | 2014 |
| ETA Sound Ltd | Blythe Gate | 2008 |
| Etail Fulfilment Services Limited | Huddersfield | 2015 |
| Etalon Ireland Limited | Belfast | 2015 |
| Etaxation Ltd | Telford | 2021 |
| ETC Ltd | Cambridge | 2023 |
| Etched Art Ltd | Bournemouth | 2010 |
| Etchersend Ltd | Watford | 2022 |
| Etchingham Motorsport Limited | London | 2024 |
| Etchingham Park Farm Limited | London | 2024 |
| Etchingham Properties Limited | London | 2024 |
| Etci Meathouse Ltd | Manchester | 2016 |
| Etdd Group Ltd | Ilford | 2019 |
| Eternagy Ltd | Haverfordwest | 2025 |
| Eternal Desires Ltd | London | 2024 |
| Eternal Essence Ltd | London | 2024 |
| Eternal Silver Limited | London | 2014 |
| Eternal Skincare Limited | Chichester | 2020 |
| Eternal Sparks Ltd | Paignton | 2024 |
| Eternal Time Limited | Manchester | 2001 |
| Eternita (UK) Ltd. | London | 2023 |
| Eternity Bathrooms Limited | Wednesbury | 2016 |
| Eternity Investments Limited | Manchester | 2014 |
| Etex Finance Limited | Worcester | 2018 |
| Etex Group Limited | Worcester | 2019 |
| Etex Holding Limited | Worcester | 2018 |
| Etex Limited | Worcester | 2018 |
| Ethan Girling Enterprise Ltd | Solihull | 2021 |
| Ethan Reggie Ross Limited | London | 2022 |
| Ethedo Marine Limited | Thame | 1978 |
| Ethel Starkey Properties Ltd | York | 2024 |
| Ether Realm Global Trading Ltd | Manchester | 2025 |
| Ethereal Beauty Biotechnology (UK) Company Limited | Cardiff | 2020 |
| Ethereal Property Ltd | Newcastle | 2024 |
| Ethereal Real Estate Solutions Limited | Warwickshire | 2025 |
| Ethergas Limited | Hoddesdon | 2018 |
| Etherley Moor Management Company Limited | Bishop Auckland | 2014 |
| Ethica Leather Limited | Northampton | 2016 |
| Ethical Bear Limited | Aylesbury | 2020 |
| Ethical Collections Limited | Dewsbury | 2010 |
| Ethical Compliance Ltd | Telford | 2024 |
| Ethical Energy Offsetters Limited | Chelmsford | 2012 |
| Ethical Finance Ltd | London | 2018 |
| Ethical Independent Advice Limited | Cheltenham | 2002 |
| Ethical Investors Group Limited | Cheltenham | 1998 |
| Ethical Investors Limited | Cheltenham | 1998 |
| Ethical Parking Management Ltd | Worthing | 2004 |
| Ethical Records Limited | Bourne | 2007 |
| Ethical Screening Limited | Cheltenham | 2001 |
| Ethical Screening Services Limited | Cheltenham | 1998 |
| Ethical Shopper Limited | Berkhamsted | 2000 |