\link{http://www.dh.gov.uk/PolicyAndGuidance/HealthAdviceForTravellers/LatestHealthUpdates%20/fs/en?CONTENT_ID=4086783&chk=RCXH0G\Dept of Health.}
Saw this in the Guardian today. All current E111s expire on 31/12, and from then on each person in a family needs their own, but you only have to complete one form for the family for everyone to get one.