The last time I went to vote was in the by election last October in Heywood and Middleton. I handed my polling card to the woman and she asked where I lived. I said there's a big clue on the card just under my name. She said I had to SAY my address. I could see no reference to this on the card and told her she was being over officious and making it up as she goes along. She wasn't happy. But neither was I, as I had never been asked this before when voting. So I told her where to stick the ballot paper and walked out.
^^Are you sure it was not the polling station ID number that they put on the voting paper, that can be done if they don't have an indent press?
Putting a voters ID on the ballot slip is a clear breach of the requirement for a secret ballot, it would invalidate the election, in addition to being an imprisonable offence.