Cant believe that we want to have an airport in the middle of a river,
parking will be a bitch.

From the New Civil Engineer magazine

Crossrail top brass 'encouraged' by Boris Island plan
Published: 23 January 2009 17:33 Author: Ed Owen

Boris Island - somewhere north of Sheerness

Crossrail executive chairman Doug Oakervee said today that he was 'encouraged' by the idea of an island in the Thames Estuary to replace Heathrow, and said its construction would be a simpler than either Hong Kong's Chek Lap Kok airport or Osaka's Kansai airport.
Oakervee is conducting a feasibility study into an airport in the Thames Estuary, to report to the Mayor of London in March.

He said: "I'm encouraged - from an engineering perspective it is quite clear that the Mayor's ambitions could be realised and the construction would be easier than other airports such as Chek Lap Kok in Hong Kong and Kansai in Japan."