Departmental witnesses told us that the extent of these problems can depend on the policy area, but highlighted that sharing lessons across government can be difficult because there is not a single place to find information.19 Cabinet Office told us that it tries to disseminate good practice through the work of the functions and the Evaluation Task Force.20 However, HM Treasury accepted that more needs to be done to share best practice and tell people about the benefits of cross-government working to encourage departments to work together.21 Missing or inadequate data