Given the relative success of Crossrail, why hasn't there been more support for getting HS2 built? Crossrail's cut journey times and increased capacity (e.g. with Shenfield local services going from 6 tph to Liverpool Street to 8 tph to Paddington and beyond), which HS2 would do / would have done at a larger scale.
Of course, they're not analogous. I think the difference between the initial and final Crossrail cost was ~20% (£16 bn vs £19 bn) whilst the 2009 estimate of £38 bn for HS2 (£59 bn in 2024 GBP), with that potentially having doubled by the early 2020s. I also don't think there was much debate about the route of the Crossrail core section once Paddington – Liverpool Street was agreed on, whilst HS2's had issues over serving East Midlands and South Yorkshire vs Derby, Nottingham and Sheffield City centres, and how much new infrastructure Manchester and Liverpool should get for it. Crossrail was also lucky in having been largely built pre-Covid.
On the other hand, Crossrail's a – perhaps the most, since the turn of the millennium – visible sign of government investment in London when per capita transport spending in England, at least in 2018, was lowest in the East Midlands, Yorkshire & Humber and North East, and lower in the West Midlands than the four southern regions. I know that WCML capacity's probably worst on the southern sections, but at least starting on the northern sections first, or giving Birmingham – Leeds legislative approval at the same time as London – West Midlands, would have made it seem as if investment in transport between the Midlands and North was happening beyond things like MML electrification.
Of course, they're not analogous. I think the difference between the initial and final Crossrail cost was ~20% (£16 bn vs £19 bn) whilst the 2009 estimate of £38 bn for HS2 (£59 bn in 2024 GBP), with that potentially having doubled by the early 2020s. I also don't think there was much debate about the route of the Crossrail core section once Paddington – Liverpool Street was agreed on, whilst HS2's had issues over serving East Midlands and South Yorkshire vs Derby, Nottingham and Sheffield City centres, and how much new infrastructure Manchester and Liverpool should get for it. Crossrail was also lucky in having been largely built pre-Covid.
On the other hand, Crossrail's a – perhaps the most, since the turn of the millennium – visible sign of government investment in London when per capita transport spending in England, at least in 2018, was lowest in the East Midlands, Yorkshire & Humber and North East, and lower in the West Midlands than the four southern regions. I know that WCML capacity's probably worst on the southern sections, but at least starting on the northern sections first, or giving Birmingham – Leeds legislative approval at the same time as London – West Midlands, would have made it seem as if investment in transport between the Midlands and North was happening beyond things like MML electrification.