| E. & J. Gallo Winery Europe | Uxbridge |
| EA Sports / Electronic Arts Ltd | Guildford |
| Earl & Thompson Marketing Ltd | Gloucester |
| EAS UK Ltd | Blackburn |
| Easynet | London |
| Economic & Social Research Council (ESRC) | Swindon |
| The Economist Newspaper Ltd | London |
|
EdComs | London |
| Edelman UK | London |
| Eden Rock Sports Management | Buckingham |
| EDF Energy | London |
| Edinburgh Bicycle Co-operative | Manchester |
|
Edinburgh Festival Fringe | Edinburgh |
| The Edrington Group | Glasgow |
| Education Connections Ltd | London |
| EIAT UK | Thetford |
| Electronic Data Systems Ltd (EDS) | London |
| Eli Lilly & Company Ltd | Basingstoke |
|
The Elisabeth Svendsen Trust for Children & Donkeys (EST) | Sidmouth |
| Elizabeth Arden Ltd | London |
| Elmwood Design Ltd | Leeds |
| EMI Group plc | London |
| Emirates Airline | London |
| Engage Mutual Assurance | Harrogate |
| England & Wales Cricket Board (ECB) | London |
| England Basketball | Sheffield |
| England Handball Association | Rossendale |
| England Hockey | Milton Keynes |
| England Netball | Hitchin |
| England Rugby Football Schools' Union (ERFSU) | Twickenham |
| England Squash | Manchester |
| English Amateur Dancesport Association (EADA) | Hook |
| English Baseball Association | Liverpool |
| English Bowling Federation | Worksop |
| English Bowls Players Association (EBPA) | Eastbourne |
| English Curling Association (ECA) | Bedford |
| The English Golf Union Ltd | Woodhall Spa |
| English Heritage | London |
| English Indoor Bowling Association (EIBA) | Melton Mowbray |
| English Institute of Sport | Manchester |
| English Lacrosse Association | Manchester |
| English Ladies' Golf Association (ELGA) | Birmingham |
| English Schools' Athletic Association | New Malden |
| English Schools' Basketball Association | Paignton |
| English Schools' Cricket Association (ESCA) | Hull |
| English Schools' Football Association (ESFA) | Stafford |
| The English Schools Golf Association | Bury St Edmunds |
| English Schools' Swimming Association (ESSA) | Woking |
| English Short Mat Bowling Association | Shrewsbury |
|
English Table Tennis Association Ltd (ETTA) | Hastings |
|
English Touring Theatre | London |
| English Volleyball Association | Loughborough |
| English Women's Indoor Bowling Association (EWIBA) | Northampton |
| ENS | London |
| Entbe Ltd (Singha Beer UK) | Slough |
| Enterprise plc | Preston |
| The Environment Council | London |
| E.ON UK plc | Coventry |
| Epson (UK) Ltd | Hemel Hempstead |
| Equality and Human Rights Commission | Stratford-upon-Avon |
| Equestrian Surfaces Ltd | Burnley |
| Ernst & Young LLP | London |
| Esporta plc | Wokingham |
| Esportif | London |
| Essentially | London |
| Esure Insurance Ltd | Reigate |
| Etihad Airways | London |
| Eton Fives Association (EFA) | Sevenoaks |
| Euro RSCG KLP | London |
| The European Sponsorship Association (ESA) | Surbiton |
| Eurosport Television Ltd | London |
| Eurostar Group Ltd | London |
| Eurotunnel Plc | Folkestone |
| Evans Property Group | Leeds |
| Eveden Ltd | Desborough |
| The Event & Sponsorship Club | Frederiksberg |
| Eventia - The Events Industry Association | Birmingham |
| The Events Group Ltd/ Sport for Television | Esher |
| Eventuality UK Ltd | Fairford |
| Everards Brewery Ltd | Leicester |
| Eversheds Solicitors LLP | London |
| Exito Sports Co Ltd | Warrington |
| Expedia.co.uk | London |
| Experian Ltd | Nottingham |
| Experience | London |
| Express Newspapers Ltd | London |
| Extreme International | London |
