Britain is building one of the world’s most expensive railways

Most of the money isn't being spent on building a railway, it's being spent on not building it, such as by redesigning Euston station to be smaller and more expensive, repeatedly, and making sure to spend a large amount of money demolishing buildings and digging a big hole in the ground before cancelling it.

Make no mistake, this was deliberate Conservative policy. They knew (as everyone else did) that they were going to lose the last election, years before the fact, and chose to set money on fire and sabotage the country's infrastructure in order to make life harder for the Labour government that was coming and ensure they couldn't get a win.

Sorry but for some ballance, the current prime minister stood in parliament and opposed the entire HS2 project "on cost and merit" and voted against the project in 2016. He said "the only sensible plan is to abandon the project altogether".

> They knew (as everyone else did) that they were going to lose the last election, years before the fact, and chose to set money on fire and sabotage the country's infrastructure in order to make life harder for the Labour government that was coming and ensure they couldn't get a win.

Actually HS2 was never popular in Conservative constituencies and if they had a manifesto pledge to scrap the project entirely, they might've stood a chance.