I think WW is correct. It is often said that it is easier to get the go-ahead for a project that costs £1m than for one of £10,000 and you probably know the reasoning behind that (ask if you like).
HS2 and R3 fall into this category. Quite apart from the petty party politics and the 21st century modern lobby by individuals. If we had a robust electoral system and many people voted - these voters would not be so threatening. But so few have faith in the system, so few vote and they count for a lot. Thus the downward spiral continues.
I will take the risk of boring you with my oft repeated:
- LHR will remain as it is.
- The battle for seats has already been lost - 20 years ago.