The previous Public Accounts Committee also concluded in its 2023 report on HS2 Euston that it was another example of the Department making the same mistakes and failing to learn lessons from its management of other major rail programmes, highlighting the need for more work on cost estimation, the treatment of contingency and managing the integration of complex projects.81 78 Committee of Public Accounts, High Speed 2: Spring 2020 update, Third Report of Session 2019–21, HC 84, 17 May 2020 79 Committee of Public Accounts, HS2 and Euston, Tenth Report of Session 2023–24, HC 67, 7 February 2024 80 Committee of Public Accounts, High Speed 2: Spring 2020 update, Third Report of Session 2019–21, HC 84, 17 May 2020; 81 Committee of Public Accounts, HS2 Euston, Sixty–third Report of Session 2022–23, HC 1004, 7 July 2023 25