Question to the Department for Transport:

To ask Her Majesty’s Government what are the maximum gradients on the proposed HS2 line, and where they are located.

In general the normal limiting gradient on the proposed HS2 line is 2.5%, which occurs at various locations along the route.

However, there are a few instances of steeper gradients where there are physical constraints that do not allow gradients of 2.5% or less to be achieved, namely:

- Between Euston Station and Euston Tunnels (3.4%)

- In the Euston Tunnels before Old Oak Common (3.5%)

- The east end of the Bromford Tunnel (2.9%)

- The approach to Birmingham Curzon St (3.03%)