- Extra tunneling costs, the finance black hole and the problems with predicting demand growth from 6th December 2011.
- Why it's OK to support some large infrastructure projects but not others (following criticism of the ASI's position as purely ideological)
- HS2 and NIMBYism (some findings from related academic research)
- HS2 and the North-South divide
- Benefits and costs both highly uncertain.
- Environmental benefits limited.
- People are in favour of high speed rail, providing they don't have to pay for it.
- The opportunity costs of the project are large (i.e. we could better spend the money on other things)
[Disclosure: I sit on the HS2 Analytical Challenge Panel]