HS2 has scrapped the process to find a contractor to build Grimshaw’s £435m station in the middle of Birmingham because not enough firms were prepared to shoulder the risk to build it.

The railway said it is having to start again for the job at Curzon Street and will be hosting an industry day next Friday to work out what to do next.

It said it would launch a “revised strategy” for the scheme, under which less risk will be handed to the station’s design and build contractor – after admitting contractors had turned their backs on the job.

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