surely the same argument applies to LGW, STN.....all we need do is carpet the South East and a solution is at hand !
Bagso,
Ever heard of Castellón Airport? Building an airport where there's space isn't good enough - it's not Field of Dreams. If the SLF don't want to use it, then you can't force them to. Same principle applies to extending an existing one.
3rd rwy @ LHR would solve an existing problem of providing capacity during low viz conditions alongside the growth in use of Code F aircraft and those problems listed earlier. IMHO, the political requirement to spare residents the noise have created more problems than it solves.
True that multiple runways won't work unless flexible departure tracks are made available over West London to optimise sequencing whilst maintaining adequate separation.