The trouble is, Mr Lurker, just whom is New Fleet an imposition upon? Not existing staff as their contract of employment remains the same. Surely any company has the right to employ new people on whatever (legal) contract they like - as long as people are prepared to sign, thats it.
This is why so many of us are so frustrated with BASSA. New Fleet cannot be stopped by the union - only negotiation could have secured all new joiners onto existing contracts. Remember what came out of the racecourse 'meetings'? No to any negotiations. So thats it then. New Fleet will arrive because BA can do it. Anything else; crewing levels, disruption agreements, days off, finishing times or numbers of seniors on board is merely froth on the ocean of change that New Fleet will bring.
BASSA could have stopped New Fleet but they (not the 14000 members) decided on a No Negotiations stance. Just remember that in 5 years time.