Over the last decade the Department and HS2 Ltd have repeatedly said they are learning lessons but there is little evidence that lessons have been applied effectively and mistakes avoided. Since 2013, the Department and HS2 Ltd have told the Committee that they have been learning lessons. This has included areas such as around management of costs and schedule. The Department and HS2 Ltd say that they are still drawing on work already completed on HS2 to learn lessons for future delivery and have worked with HM Treasury and the Infrastructure and Projects Authority to consider all the lessons to date. However, escalating costs, programme delays and rescoping demonstrate that the Department and HS2 Ltd have not implemented these lessons effectively. recommendation Alongside its Treasury Minute response, the Department should write to the committee setting out the key lessons they have drawn and then, in its six–monthly update, explain how those lessons have been put into practice. 8 1 Resetting the HS2 programme Introduction