Presumably to reduce fraud, they've got the same thing here already which recently changed to individual registration. I think they were even going to fine people for not registering.
http://www.markpack.org.uk/27056/wha...egistration-2/
The current old electoral registration system is based on one registration form being delivered to each household, with the head of the household completing the form on behalf of everyone there and sending it back (“household registration”).
One reason therefore for switching to individual registration is a point of principle: someone’s ability (if they aren’t the head of a household) to vote shouldn’t be dependent on whether or not someone else has filled in a form for them.