cj
Thanks for the confirmation.
I am with you in regard to the south being the better Option.
The airport seem to have initially ruled this out, probably due to the fact that they have already obtained the land to the North and have already started to move soil in that direction.They see this as the easier option(not necessary the best)
They would have the problem of getting permission to build on Green Belt land and overcoming the objections for Someries in the South ,but surely it's better than the chaos that will surely ensue with 20 Million more pax trying to use a road network , that at present can't even cope at peak time for 16 Million pax.
They have said they would return to the South Option at a later date if the North was ruled out.
Cant see it happening but you never know.