Just to note, the 130 billion figure for HS2 isn't just for the London to Birmingham leg.
Also there's a lot of things that went into making it expensive: a lack of high speed expertise, extra tunnels to satisfy nimbys, the government insisting on low risk contracts and changing plans constantly, etc
However, Japan's Chuo Shinkansen is like 90% tunneled or something crazy and the rest of Europe (and China and Japan) has a ton of high speed expertise to draw from.
Just to note, the 130 billion figure for HS2 isn't just for the London to Birmingham leg.
Also there's a lot of things that went into making it expensive: a lack of high speed expertise, extra tunnels to satisfy nimbys, the government insisting on low risk contracts and changing plans constantly, etc
You know what, that's a good point.
However, Japan's Chuo Shinkansen is like 90% tunneled or something crazy and the rest of Europe (and China and Japan) has a ton of high speed expertise to draw from.