Two quotes interest me;
.The Norman Foster plan eventually proposes that the land at Heathrow could be turned over to housing and other development releasing cash for the Thames Estuary project.
Yeah because Im sure BAA will just sell one of the world's most commercially successful airports for housing!
And secondly;
But it would be worth retaining some private jet capacity at Heathrow as well to deal with the building corporate traffic, especially along the M4 corridor.
So you're going to keep LHR open after all then and not build housing on it?! We all know there is no way that you can justify a 4 runway estuary airport without closing LHR, because airlines simply wont go there. So if we keep LHR open, it has to have three or ideally four runways.
If we propose the estuary airport, then LHR must be closed. Quite how you convince BAA to do that, remains to be seen though!