Fairdeal:
However in your recent posts you have been, probably unintentionally, making the argument for a massive LHR expansion so that.
No, I am making the argument for a decent interlining airport with full international and domestic capability - something with four international runways and two 'domestic' runways and modern terminals and good surface transport links to match its position and size.
As has been explained many times, LHR is simply too constrained and in totally the wrong location to be that new, modern, 21st century airport.
Silver