Just as a matter of interest, why do you want to work for BA?
This is a serious question, because it would be sad if your life goal was based on false premises.
For myself, since my previous employer was taken over by BA, I can honestly say that it leaves a lot to be desired.
Thats not to say that it doesn't have its good points. Certainly, given the current state of the industry, simple inertia will probably keep me there for the time being. But I could not in good conscience recommend it as an employer, and certainly I wouldn't relocate to a different country to work for them.
That said, everything depends on your personal and professional circumstances, which is why I was wondering what you think is so great about BA. It would be a shame if your life goal was based on myth rather than reality!
CPB