Sir Prancelot

I remember this programme from about 1970. I think it is from the people who did Captain Pugwash. Sir Prancelot went on a strange crusade with loyal soldiers Bert and Harold, (sounding like they were fresh from the London docks) the Lady Hysteria and baddie Count Otto the Blott.

There was also a hip type minstrel who would finish playing this tune. The minstrel, as I remember, would talk to the audience - looking out at you through the screen. He was a cartoon too. I wonder if it was a show that has been lost in the archives because I'm sure it is not out on video or DVD.