Totally agree Mishap we have just done the same and also think it is disgusting that you have to opt out from having your details sold to marketing firms.
I have just had to fill in a form online to go on the electoral register for 2014. I was not thrilled to find that I have to specifically opt OUT of allowing our names to be sold by the the council to marketing firms - and the new law is that we have to opt out every year! I think this is disgraceful. This is not what the electoral register is for. Signed: Disgusted of Tonbridge Wells.