The Department remains committed to working with Transport for London (TfL) to consider options for the devolution of the Moorgate line. We will always seek to devolve the responsibility for decisions where there is a case for doing so that will benefit all passengers.
I understand the need for GTR to share data with TfL so that they can prepare for the possible devolution of the Moorgate line in good time. However, GTR are focusing on delivering the complete benefits of the Thameslink Programme and this still has a way to go. This means that there is not yet a steady state operational model, and major change continues. As a result, much of the information that TfL will need access to cannot be shared yet as it is still subject to significant change.