Z1OwnersClub GB

Good mate of mine is looking to buy a good rideable z1a or z1b in fairly standard condition if anyone has one for sale, he has been a member of the club in the past, he's a race mechanic for one of the top tt superbike teams so even something that need a little work, but he did say one he could get on and ride. Idealy Yorkshire/Lancashire etc though he will travel for the right bike.
thanks,
peter.