It was done to death in the 60s & 70s, together with Ralph McTell's Streets of London and most aficionados (aficionadoes aficionadi?) wouldn't do it in a club these days. Every so often a tyro does it and we all join in though.   Clive (who runs the Bothy) does it to at least two different tunes now and then.

Quite good fun trying to sing one to the tune of the other. I've heard Mr Happy sing Ken Dodd's Happiness to the tune of Hughie Jones's Ellen Vannin too - that's quite a laugh!

Steve