Planning Bill

I am grateful to the Minister for giving way. What happens if the proposed change is politically driven? For example, the current Secretary of State may decide, after full consultation, that there will be a third runway at Heathrow. However, the Conservative policy is not to have a third runway at Heathrow. Nevertheless, there is an existing national policy statement for a major piece of infrastructure. I refer also to the decision taken on the M40 in 1997, which was changed by the Labour Party. Following the point made by the noble Lord, Lord Woolmer, does one have to go through a further publicity exercise when a subsequent Secretary of State takes a totally different view on the previous consultation and wants to do something different?