I have the feeling you only belong to this FNZAS site. This does not make you a member of the FNZAS. To be a member, you need to join an affiliated club or society.
Actual FNZAS members get a Year Book which lists all names and addresses of all affiliated members nationwide. They are listed by club so easy to find fellow Chritchurch members. Of course, if you actually belonged to a club you would know these others members.