Question to the Department for Transport:

To ask the Secretary of State for Transport, what the estimated cost of HS2 was in January (a) 2013 and (b) 2023.

A cost estimate for the full HS2 programme was set out in the Outline Business Case published in 2013 and has since been updated regularly to take account of scope changes, improved cost projections and inflation. The last cost estimate for each phase of the programme was published in the six-monthly report to Parliament in October 2022, with the next report due to be published in the coming months.