Global warming is a myth. Read
http://www.climateaudit.org/ for some good science not political BS.
MOL ought to be in charge of the strategic development of all London's airports.
Link them all by an ultra-fast underground maglev (kind of like a monster CERN) with spokes to a central downtown underground terminus.
Then, re-allocate traffic based on its outbound track (N, S, E, W) to the respective airport.
The financing should be borne by the public sector workforce only; deduction at source...because I as a tax-payer, have to pay for their bloody pensions...