This all presupposes that the Governement "of the day" will run with Davies !
Politicians lie.
The last Labour government bit the bullet and approved LHR expansion.
Cameron vetoed it for political gain then when in office understood why it needs to happen. Hence Davies gives Tory and Labour cover to make a touch choice forty years too late. We need to pay our way and to do that we need to trade, to do that we need to loosen the constraints on our hub connectivity.
Follow the money :
Crossrail is funded and coming soon.
Further rail enhancements are planned.
Terminal 2 is nearly complete. Terminal 2C is in the planning stages.
Terminal 5 is world class.
Zac Goldsmith (billionaire, nice house under the flightpath), Alexander Boris de Pfeffel Johnson, Boris is his stage name, (clever guy, lazy, repeatedly fired, never had a real job), Edward Milliband, theoretical academic socialist, never had a real job, and whatever's left of the Lib Dems can bleat all they like. Follow the money. See what's happening on the ground and in the planning. Red Ed needs *some* credibility with business and he's not in a position to fund Boris Island or fudge the issue for another decade.
It's not beyond the wit of man to prevent Heathrow flooding in expceptional weather, it's really, really not. It's also somewhat cheaper than spening BILLION of pounds building a magical floating island on the wrong side of London, distant from the M4 corridor and all the jobs it supports. Follow the money, ignore the hot air from windbag opportunist politicians who say what you want to hear then do what they were going to do anyway.