First it was £30bn, then £42.6bn, then £70bn (Boris) now £80bn. Next week? Pick a number, any number.
I can see this going the way of so many other government schemes. Billions will be spent on consultants, plans, revised plans, legal wrangles and sweeteners. Oh, hang on, that has already happened. Then one day it will be "discovered" that we cannot afford it, that it will never make a profit and that the project's economic benefits were overstated. Oh, hang on, we already know that.
Quote from Wikipedia:
Peter Mandelson, a key advocate of HS2 when the Labour Party were in government, declared shortly thereafter that HS2 would be an "expensive mistake", and also admitted that the inception of HS2 was "politically driven" to "paint an upbeat view of the future" following the financial crash. He further admitted that the original cost estimates were "almost entirely speculative" and that "perhaps the most glaring gap in the analysis presented to us at the time were the alternative ways of spending £30bn."
And politicians wonder why they are not trusted! Duplicitous barstewards.