The common missconception here is that prices @ airports will be pushed down by competiton. At present there are few if any of the larger UK airports claimimg to make any sizeable profits. This is reflected in the lack of investment apparent at all / most UK airports. At the outset there might be some introductry offers but prices will stabilise to the across the board, there are a limited number of airports that offer exactly the same services basically, with a foresight of exactly what business is out there. For the present there are few if any new airlines, likewise few if any new routes so whom ever gets EDI or GLA I doubt you would see any changes for a number of years and charges would remain the same. The main losers would be BAA employees who would see their wages diminish rapidly.