But if WW finds it unacceptable that the project is funded with any aero charge supplement whatsoever at Heathrow, he might have said that to the PM five years ago because that would be curtains for the project. Getting the costs down, yes ; funding it entirely out of growth, out of the question.
Of course as the owner of 60% of a very valuable scarce property, the name Mandy Rice-Davies comes to mind.