Da Dog and others were you comparing like with like at CFE and EOG?
At CX you have two groups of pilots flying the same type of aircraft on the same routes with a common employer, BA. but very different rates of pay. I would suggest this is discrimination.
I am somewhat bemused that as a member of BALPA (?) you don't feel that the association owes you something for your monthly contribution.
Taking advice would not cost BALPA much and it can afford it and it owes you all something.
Lastly a successful Tribunal (which does not require a barrister unlike say the high court) can award back pay. In short legal action although more time consuming and less macho than a strike may be far more effective.
Regards BP