T1 full
With ba potentially moving to T1 who is moving out? T1 is full at peak times (especially early morning) when aircraft are parked remote and tugged over to contact stands once the early flights have gone. It's also worth remembering that the airbridges on T1 aren't connected to domestic arrivals so pax would have to be bussed round to arrivals.
Would tcx move to T2? Maybe jet2?