A good point Rivet Joint but I doubt that the airport would have pushed Vueling away because of pressure from a dominant airline. If an airport meets the terms of its' operating licence, it wouldnt be able to favour one particular airline over another. The reality is that Vueling have more to lose at other UK airports by going up against FlyBe at SOU. I suspect that this was a commercial decision from Vueling and am certain that SOU will be very disappointed at the loss of a potentially strong airline partnership.