I am not sure why retired BMI pilots would expect any staff travel concessions from BA, given that their airline is now defunct. If you were to lose your pensions, that would be an absolute tragedy that would have to be challenged - but to lose staff travel concessions for an airline you never worked a day for? I am a slight loss to understand the problem. Your airline no longer exists therefore there is no airline to give you staff travel benefits - how unfair is that?