It would seem a reminder is in order regarding the subject of cab rides, and in particular gaining access to train cabs for the purpose of.
The forum staff would like to remind members that train cabs are a safety critical environment and that access to them is strictly controlled. The same applies to other safety critical environments such as signal cabins and line control rooms.
This forum should not be used as a means to arrange access to such environments be it by PM (rule 3e) or in a public post. LU/TfL has official points of contact and they should be used in all cases.