If LHR is to build a third runway, and the airport have mixed operations on all three (which I am assuming will happen), will there be excess slots?
If so, could U2 venture into the world's busiest international airport? They serve many of Europe's biggest airports including AMS, CDG, MAD, ZRH, LGW, MAN etc. so could they not fit any flights into LHR? They would be able to clean up and it BA where it really hurts on short haul. They are giving them a hard time at LGW but if they were to get into BA's current safe haven would they be able to set the cat amongst the pigeons?
It would be a great achievement if they were able to do that but I would not put them as the first major LCC to enter the airport: Air Berlin and Air One look more likely due to their more expansive services. I wouldn't put them as the last airline to fly into the airport either! I think FR would hold that prize proudly.