As of today, BASSA's declared membership was 9757. So the vote suggests 65% of its members either voted for the offer or tacitly accepted it by abstaining.
Given there is something like 12000+ cabin crew, some 3000 of so were free to take BA's offer on an individual basis. Whereas I doubt BA will declare the numbers of non union crew accepting the offer, it's apparent some 9342 cabin crew are on the other end of the balance leaving only 3419 in BASSA's corner.
It says something for a Union that so many of its own members have failed to support it. I guess those who abstained can truthfully say to their militant colleagues "I didn't vote for the offer".
Oh, I've just seen the post from BASSA's duty apologist on the crew forum. It appears the reason for the low turnout was because members got their ballot papers to late to submit them. Oh, so that's another BASSA admin fiasco then.