The question asked is:
Why are the rules different for BA CC that fly out of LHR than they are out of LGW?
Answer seems to be that a few years ago BASSA agreed to allow LGW crews to be paid less,
with worse T&C's, in order to protect the LHR "pay & practices". LGW crew numbers were relatively small then and LHR "reps" sold those fine LGW folks down the river to protect themselves. Now you know how "solidarity" works at BASSA ! ! !