I probably don't need to have permission to park at the university before the end of September 2016 any more.
It wasn't even stuck on; it was in a plastic pouch that was stuck on. I could have removed it at any time, but as I only ever saw it from behind it wasn't uppermost in my thoughts. I only removed it because the Automobile Association sent me a sticker and I thought I'd give it a chance.
I now realise that visitors to the UK who have never heard of the Automobile Association will see my sticker and think I'm a member of Alcoholics Anonymous. Maybe I'll take it off six years from now.