Ridiculously expensive, achieved very little tangible or worthwhile whilst with BM, and then BALPA refused to assist and were hugely unhelpful during the whole BA / BACX farrago.
British
Airways
Line
Pilots
Assoc.
BA might obviously disagree, buts that the way it was / is.
Now with the IPA - huge saving, pretty much the same benefits, legal protection, insurance, financial advice etc etc Also much easier to communicate with / to and far more helpful.