Invertoty is purely fictional.
The Title was as introduced by Alex Norton.
Alex may not list his time as a folksinger or his residency at the London Troubadour in 1969-1971, but he was there (as was I). Come to that, he doesn't make much of his time on the kids' TV show "Playaway", either! He used to own Marty Wilde's old Gibson J200, which I still covet.
The composer might have been Alex himself. It was not by any of the usual suspects (Hamish Imlach, Matt McGinn), and I have never seen it on anyone's album, nor have I heard it sung in thirty years, other than by me.
Do Captain Swing or Jon Bartlett know any better, I wonder?
Alan