Stewie, I still have the (now ragged) paperback "100 FolkSongs Old and New" compiled by Alasdair Clayre and published by Wolfe Pub. Ltd and World's End Music in 1968.
The "new" includes 10 of his own songs :
Two Evenings / Hawthorn Berries / Old Man's Song / The Tyre Fitter / A Cold Wind Blows / Break-up / Springtime Song / Ballad of London / Guerilla / Three Loves / + English words to Jacque Brel's The Dove (La Colombe).
However, there's nothing about HIM - apart from his songs, that is ...

Cheers! R-J