I met Paul busking in Basel in about 1982. He played a small Martin and had the strongest voice I have ever heard on the street. I hung out for a few days with him, Phil Free and another busking friend of Phil's called Seamus. At the time he lived in Friebourg, Switzerland, with his wife. He spoke French fluently. An exchange of e-mails with Lanfranc a year or so back confirmed that this was the same Paul McNeill whom he knew.
The busking pipeline is not the world's most authentic source of information, but New Zealand John, whom I met in 1986, told me that he had died of cancer of the liver in Sweden or Norway a year or two previously. Paul would have been a year or so short of fifty at the time.
Paul knew most of the luminaries of the British folk scene. He had also worked with several leading British comedians, including the Monty Python team. John produced his last album, but I don't know what became of it.