I've happened upon a BitTorrent site called
UKNova.com which specializes in UK TV shows.
There's only one game show up there right now -- a 2004 episode of
Mastermind. It is a 200MB AVI file, but well worth it -- the video quality is amazing.
I have requested that other game shows be posted, but it is a volunteer organization and, well, no one has cooperated so far.
You do need to sign up, but it's a fairly simple process.
The site tracks how much you've uploaded and downloaded...and leeching (downloading more than you've uploaded) is frowned upon.
Enjoy!
Curt