Question to the Department for Transport:

To ask His Majesty's Government what estimate they have made of (1) the projected outstanding cost of HS2 as of 1 April 2026, and (2) the proportion of which allocated to the development of Euston station and the Euston approaches.

The Government announced in May 2026, the expected cost of delivering HS2 is now in the range of £87.7 - 102.7 billion. This is expressed in a mixed price base, including the cash outturn of works to date and the costs of future work excluding inflation.

This is an initial assessment that will mature further as the work is refined into a full programme baseline. Drawing on lessons learned from previous experience, the Department is taking the time to complete the necessary work to establish a robust baseline before seeking to set budgets for Euston.