Question to the Department for Transport:

To ask Her Majesty's Government what is the current planned maximum speed of HS2 trains on the HS2 tracks (1) in the open, and (2) in tunnels; and what is the expected journey time from London Euston to Glasgow Central of HS2 trains, without using the Golborne Link.

The HS2 Rolling Stock will have a maximum speed of 360km/h but will run slower on certain parts of the infrastructure, including some tunnels, due to specific geographic constraints.

In the current planning assumptions, used to inform the business case for HS2, the journey time from London to Glasgow will be 3 hours 48 minutes once Phase 2a is operational.