Silverstrata Quote:- "Easy, you build a new London Gateway airport in the Thames estuary."
Even a Tom Tom or Garmin GPS with an out of date database will tell you that the Thames estuary is nowhere near London - which is where passengers wanting to go to London want to go!
I think you will find that:
a. Many LHR passengers are interlining, and don't want to go to London.
b. The journey Thames to London on a high-speed train would be quicker than the Paddington Express (and much faster than the tube-link).
See this thread:
http://www.pprune.org/airlines-airpo...rt-london.html