The demand for OS pilots being on the MSL is not intended as a compensation for their lower Ts&Cs, those Ts&Cs would be applied regardless of being on or off the BA MSL.
The demand for the joint seniority is intended to stop those Pilots in OS from being used as a lever to undermine the Ts&Cs of mainline BA Pilots (and effectively all other Pilots in the UK) - it is demanded as it already is an integral part of the intent of our agreements with BA.
"So the BA pilots union didn't have the foresight to negotiate an agreement that would cover all BA operations any where in the world. BA pilots are now threatening to go on strike because this agreement no longer suits them and the BA management wont go back and correct the union's original mistake?"
The opening line of the agreement states that the intent is that BA pilots will fly BA aircraft - does that not cover OS?
".. seconded staff will be paid for by OS at market rates, "
actually, the seconded managers are not taking pay cuts to set up OS.