Tac, Turnup - you have both provided a great deal of helpful and common-sense information. Your comments reveal that both of you have read between the lines very astutely!
I have enough to go on now, and believe that if necessary I can make a case for supporting certain BP activity if members wish it to be so. If a committee feels that BP is inappropriate for other reasons, then that's a different matter.
Excellent advice from you all as usual. Thanks again.