Would have liked to see more detail on why projects are so expensive in the UK - there was some detail in the road section (changes from objections leading to more expensive features to placate these complaints), but can't see that for underground projects, for instance...

I know when the Olympics was in Weymouth and Portland, someone knew a contractor who was doing it, and they were able to charge 3x their normal rate as long as it was guaranteed to be on time. They made a fortune. In addition, a local road building project near me (which is on the road between London and Weymouth) was pushed through to provide a better route - despite it being massively expensive and making a terrible long-term mess of what was a bad junction that needed a flyover, not the awful hamburger junction solution that the local area is now saddled with that is always on the traffic reports.