British NIMBYs seem unusually strong, even in a world of NIMBYism. Best wishes to the British in defeating the Midsomer Historical Society of Bat-Loving Cranks, which apparently controls the deep state over there.
The issue is that the project has been so badly mismanaged and costs have spiralled so far out of control that even the first small, incomplete section of it is now costing us 3X what the ENTIRE project was supposed to cost. It’s also at least 7 years behind schedule: when they started construction, stage 1 was supposed to open in 2026 - this year!!
Yes, NIMBYism is part of this, but catastrophic project management failure and a culture where contractors view the public purse as an limitless cash cow to be milked to the maximum extent possible have a lot to do with it too.
Bottom line is the UK is not good at building large infrastructure projects, and the bigger they are, the worse it gets. Complete rethink/reboot required.
Or, instead, keep building, so the UK actually gets experience with large scale projects? Establish an anti-corruption body that retrospectively investigates every pound spent on HS2, and places lifetime public-contract bans on contractors found to have acted dishonestly? If the graft is as extreme and obvious as you say, surely this is no hard task.
If the UK has no experience building things, there's only one way to get some, and it's not to stop building for ten years while the government 'rethinks and reboots' (i.e. pays McKinsey for expensive reports exculpating McKinsey for any cost overruns). Ten years during which all the people who were actually involved move on to other roles, often private sector, often overseas. That's how you throw away all the experience accrued during this construction.
Sometimes the perfect is the enemy of the good. In twenty years, when the HS2 is zipping around, bringing down the cost of logistics, making groceries cheaper, lowering house prices as people can live further out, no one will even remember how it was built.