In reply to Iain Peters:
So FRCC, Wayfarers and MAM etc
http://www.climbers-club.co.uk/cms/huts/reciprocal-rights-huts/ are Kindred Clubs, but what about the Alpine Club? , joint meets with them so you could say it is, but what if you did not have a joint meet with them for a few years, would they cease to be, kindred.
Is it all a bit nebulous and a case of you know one when you see one, or is there a formal definition?
ps This is nothing to do with CC, but it is a good example.