If GB at MAN is going BACON, but at LGW is remaining British Airways - surely that would cause some differences if a crew was flying (inc nightstops) MAN-TFS-EMA-TFS-LGW.
Plus - BACON is Purchase on Board catering isn't it?
Book a flight on the BA website and it states:-
Included in your fare Operated by GB Airways
Comfortable 30-31in seat pitch (76-78cm)
Complimentary food and drink to suit the time of day
Reserved seating at check-in
Complimentary newspaper available