LHR27C, as you are obviously advocating a centre rinway at LHR, the answer to your question is, Yes.
It is purely political. The money is not there and nor will it be in the forseeable future. Just where do you think they will raise the £20 billion it will cost?
Would you lend money to Gordon Brown or Alistair Darling or Ferrovial and hope to get it back in the next ten years?
No, I thought not.
Forget the whole expensive waste of time and money.