It's Steve Anglesey here - I'm the bloke writing the Alan Groves feature for FourFourTwo - thanks for all your help so far.
Another fan has suggested I should get in touch with Pete Mason of the Beyond The Boundary zine, who ran a monthly 'Alan Groves Story' feature in the 1990s - are you out there, Pete? Or does anyone else know how to contact him.
Thanks again for all your help.