£15bn just to close the site. How much more to build the new one, including road, rail, infrastructure, hotels, offices, cargo, etc. Seriously, Borris should be given a job in China.
This would be a project twice the scale of HKG.
Think of all the structural unemployment of people working minimum salary jobs who could not afford the transport costs to the new airport and who cannot move out of their houses right beside heathrow. i suppose these people don't vote tory anyway.
