From the HS2 Consultation documents:
The questions on which the Government is seeking views are set out below. In each case, the Government is interested in whether or not you agree with its proposals and why, as well
as any additional evidence that you feel it should consider in reaching its final decisions.
iv: This question is about the specification for the line between London and the West Midlands (Chapter 4):
Do you agree with the principles and specification used by HS2 Ltd to underpin its proposals for new high speed rail lines and the route selection process HS2 Ltd undertook?
p74 Consultation document.
Maintaining high speed would reduce journey times. The proposed route has generally been designed for speeds up to 250 miles per hour – similar to routes currently being designed elsewhere in Europe.
International experts agree that for really high speed trains to be worth building, the distances between stations should be at least 150km apart.
Britain is a small island compared to other European countries, and its major cities are closer together. By the time the proposed route has got out of London to an area where trains can run at maximum speed, the distance is a lot less then 150kph.
So the speed chosen by the DfT and HS2 Ltd is not suitable for Britain.
Stop HS2’s answer to this question is “no”.