Don't be embarrassed Alec! It was actually an episode of "Happy Ever After" (pre - T&J but same old rubbish with a different name) called "The Hut Sut Song". Nobody had heard of this song apart from the lady in the record shop (played by Damaris Hayman) I think they did eventually track down the record and were all dancing along with it at the end of the show - not that I ever watched the programme you understand! (Actually it's one of the few episodes of this show I can remember purely because of the song.)

Cheers
Mark