This is my 8th attempt at completing this, it's 201D-1 Stonebridge part depot - Stonebridge park. I just sit here at the red light (1 hour is the longest I have done) if I move past the red light, I get an instant fail. Not sure what I am doing wrong? Any suggestions are more than welcome, I'm on PS5 by the way.
Try contacting the signaller. I don't know what real procedures are, but I like to imagine that the signaller does not know that I am ready to join the Bakerloo Line until I tell them. Until then, the Harrow trains will have priority.