Sorry to be the one to pull this thread back on track (pardon the pun) but rail links, important as they are can be changed to suit any location - with planning and money admittedly. Placing an airport on the Essex or Kent coast or even in the Thames itself certainly makes sense in regards to the available land mass and away from denser areas of populous but where does Boris think the 100,000 workers who are required to make said airport and associated businesses operate come from? You could be looking at 500,000 people migrating into North Kent. Land and house prices would sky rocket, the local roads would become clogged and destroy many local communities. Is there really enough room anywhere near London for a whole new airport and a new city to support it? Sorry I just can't see this happening.
