This letter seems to be step one in the individual registration process. There was a piece about it on The Daily Politics today and, although I am a bit of a politics geek, much of it had passed me by. I looked it up and found this on the Electoral Commission site:
^Previously, one person in every household was responsible for registering everyone else who lives at that address. Under individual electoral registration, each person is now required to register to vote individually, rather than by household.
Under Individual Electoral Registration you need to provide 'identifying information', such as your date of birth and national insurance number, when applying to register and your application will need to be verified before you are added to the register. Anyone unable to supply this information can provide an alternative form of evidence of their identity.^
The only additional thing I gathered from the DP item was that previously Universities used to sign up student (in bulk?) and now they will have to do it individually.
If anyone has more insight into this I would love to know.
(Just previewed this and the italics don't seem to work - sorry)