"I may sound like I am supporting the CC here, but you do have to ask whether the union actually asked any working crew...."
You would assume that they had, but from BASSA's no response to BA I would hope that they hadn't asked - otherwise I'd be very worried and thinking rank and file BASSA members would be vindictive and selfish enough to prevent BA ferrying desperate, worried and stranded passengers home as quickly as possible.....
