BFS sale...
MAG is no doubt out of the question because of the Stansted takeover.
GIP have already got the much bigger Gatwick and Edinburgh airports and are still focusing very much on those. Would they really want to take Belfast on as well?
Would BAA (Heathrow Airport Holdings) be allowed to buy Belfast?
Perhaps the peel group who own Liverpool, Doncaster and Teesside? (Might be good for Wizz if they got LTN, since they already work with them at LPL and DSA).
I think the Peel Group would suit best out of the main ones in the UK but not sure how realistic that would be. Perhaps somebody else may pop up from somewhere, may be somebody who would take on both Belfast and Luton? It seems Cardiff is already on track to being bought by the Welsh government.