I've just remembered a couple more:
When I was teaching, I met Ken Loach, who was filming scenes for his film 'Looks and Smiles' at our school. (I've watched the movie since though and can't recognise any shots in the school. However there's a lovely cameo of the lady that we teachers employed to make our tea, as she was given a small part in the movie).
Also, when I was a sixth-former running the school library there was a cheeky little second year kid who helped out a lot, called Nicholas Kershaw. I understand that he was quite good at music ;-)