Why no expand the following.
Doncaster, massive runway, massive amount of land for terminal expansion.
East Midlands, Central England location, easy motorway access.
Manchester, North England lacks USA flights, Manchester only serves 4 or 5 american cities, LHR serves double figuires.
Birmingham, Large populated area.
Leeds, Large populated area.
Manston, why not make this into a major uk airport, massive runway.