ShortfinalFred
You said:-
"If GB had to pay its true share of the BA overhead, it wouldn't make a profit just as BACX found when it was taken in to the BA fold as a wholly-owned subsidiary."
That, I'm afraid, says everything about fat BA overheads and how much BACX have been disadvantaged now they are unable to negotiate the going rate for handling with their new owners. A quick look at this would provide a perfect illustration to WW of inefficiencies, the solutions to which are painfully obvious in this particular case.
In my experience as a regular pasenger, GB are a pleasure to fly with, although this pleasure has been somewhat eroded since last year, when the catering was downgraded to the standard BA shorthaul fare. All day Deli indeed!