Alistair posts to the Footstompin forum occasionally and will doubtless read anything you ask about him there.

http://www.folkicons.co.uk/alistair.htm
http://www.folkmusic.net/htmfiles/inart516.htm
http://www.footstompin.com/artists/alistair_hulett

"Swarb collaborator"? You *do* realize Paul McCartney was in a band before Wings? (I've heard quite a bit of Hulett, very little of Swarbrick and nothing of their collaboration).