There was a St Trinians film which featured the Westminster Morris men (something they've tried to live down ever since), dancing on stage as part of the schools' parents' day festivities. The plot involves the girls breaking up a gang of bank robbers who are lead by Frankie Howerd (It could be Alfie Bass, it's been a while since I've watched them, don't want to give Bratling any ideas worse than those she has already)who evades capture by hiding in the team, disguised as Fool. The film also features one of the best ever train chases.

Sheffield Morris men appear briefly at the beginning of The Full Monty.... and of course, there are the morris dancers in Dr Who 'The Daemons' although this is a serial programme rather than a film.

Hope this is useful.... I knew it would be one day!

LTS