Brilliant GuysIt is the Harvey Kershaw one shown above that I wanted. I had about 30% of the words, gleaned from a very poor quality recording from a Whitby folk festival circa 1980. I do not even know who was singing it then and it is a bit academic now as I have lost the tape anyway!
I did a bit of research on the event myself many years ago and the song does seem a good reflection of what the historians say.
What this one doesn't mention - but others do - is that the crowd had gathered to listen to Henry Hunt. The one I have heard most is "With Henry Hunt we'll go my boys, with Henry Hunt we'll go. We'll
... In spite of Nadin Joe." Joseph Nadid was the head of the local Police at the time. There is a good, factual if rather dry, account at http://www.fordham.edu/halsall/mod/1819peterloo.html
Enjoy. And once again thanks to all contributors.
D the G