Well apparently the news this morning is that Case is on the case and will be investigating the leaks!
So that will be illusory.
It was a risk that Starmer took Gray. If you remember that there was a lot of fuss about her external appointment. Theoretically fine, but of course, if she is the successor advisor then she will know all the skeletons in the cupboard, all the many screw ups of the last Conservative government and presumably any compromises made on direction by certain senior members of the CIvil Service. This is not just bitching. It is a settlement of old matters and about the future.
Who knows what may come to the surface regarding the last government? None of us are indispensable.