I'm afraid I'm a "NO" too.
I agree with others comments on here so far there appears to be clubs within clubs popping up. I'm all for sharing/getting information but do too many clubs dilute the information and also frustrates people trying to search numerous sites/forums just to find the information or advice that they're looking for.
Having been a member of a number of car clubs in the past I've found that some are full of people that haven't shared the same common ground as me.
I know that we can't/don't like the same things but NMS ticks all the right boxes for me. As Pete rightly said the club is more people focused over car focused however we all share the same starting ground "The New MINI".
You could pick up the phone or contact most of the members within the club and ask for help with something and I'm sure they'll assist without even batting an eye. Could you do that with a larger "general" club?
Having been luckily enough invited into the heart of the club I'm happy to do what I can to make NMS move forward and help the members as best I can. I'm not sure that I could feel so involved in a larger general national/international club.
NMS asks for nothing from its members other than you enjoy the club and get involved, however consider the costs and time involved in running this club.
I wouldn't pay £40 a year to be part of a club that I had a partial interest in would anyone else ?