Ralph McTell at Cousins allnighter - autumn 1968.

he wearing a turquoise Levi suit, big white desert boots that used to waggle up and down when he was playing ragtime.

someone said, ain't you the bloke who wrote that Streets of London song?

he said, yeh that's me

And he played it.

I'd never heard it before - I think everybody thought it was utterly stunning.