Question to the Department for Transport:

To ask His Majesty's Government what assessment they have made of the cost of HS2 to date, and how much it will cost to complete the project in current prices.

Mark Wild, the new CEO of HS2 Ltd, is leading a comprehensive reset of the programme to deliver the remaining works at the lowest reasonable cost. As part of this work, he will advise the Department on a revised cost estimate for HS2.

As Mark Wild set out in his letter to the Secretary of State on 31 March 2025, HS2 Ltd’s unassured estimate of the maximum cost of HS2 excluding Euston in June 2024 was £61.8bn in Q3 2019 prices, however he identified the programme was facing significant additional pressures which he will assess as part of the reset.

Once a revised cost estimate is agreed, this will be expressed in an updated price base in line with the commitment made by the Department to the Public Accounts Committee in December 2024.