Unite have said that lines of communication are still open with BA. I'm tempted to imagine that the only "communication" unite is having with BA is with the switchboard operators at WTS.
Something like:
McClueless: "ALLO? McClusky 'ere, put me frew t'Walsh".
Switchboard: "Sorry, he's busy running the airline".
McClueless: "Err, yeah, err, tell 'im, err, well just err say, err. Oh never mind, I'll bell 'im back on Monday".