RE: regional
I think one of the major problem in the development of regional ariports, are the big airlines because they find more profitable cutting radial routes and posicionate planes in trunk lines which are fed by feeder flights. At least that´s what happens in Spain where the three major airlines use MAD as main hub. In the case of UK, BA has cut lots of connections from regional airports and doesn´t have gut connections from Manchester, Glasgow or others. One of the major problems is that independent airlines which could offer alternatives can´t stand losses (lack of financial back up) because they have to open new routes and make the public to use them. I think local authorities play an important role because they should to make bigger effords in this. In the UK things are fine since airports are private (at least many of them) but in Spain belonging to the state this local iniciatives are senseless.
wishes.