Source · Select Committees · Public Accounts Committee
Recommendation 11
11
Department and HS2 Ltd are working to agree cost estimation methodology with Treasury.
Conclusion
Both the Department and HS2 Ltd told us that they were working together to reach an agreed methodology including drawing on third–party technical advice on cost estimation and, to ensure that the underpinning assumptions of future estimates are agreed, establishing an oversight group with HM Treasury representation.18 The Department expressed confidence that there would be agreement on the methodology in the coming two to three months.19
Government Response
A response document is linked to this report, dated 16 May 2025. Response attribution to this conclusion has not been verified. Read the response document ↗