I note BA are sending A319s to Sofia for routine maintenance. Are BA moving this offshore for good or is this due to a lack of hangar space at Heathrow. I didn't realise they've been doing this since 2012 at least, who is the 3rd party contractor?
e.g. TBA South is no longer a hangar and TBK west is now out of action as the paint bay is obsolete. With BA titles removed from the Cathedral hangar, what's the plan for BA Engineering at Heathrow?