Very interesting responses. I would have thought that this is possible as other stations with junctions seem to have them set up e.g Aldgate East and Ealing Common Eastbound (Towards central london).
I take it that due to this, RL will most likely not receive any DMI's until re-signalling is complete on one of the two lines?
But Rayners is still controlled from the signal cabin, unlike Aldgate East and Ealing Common. However, I would naively think that if you can do it at Ricky (as per the title of the thread), you could surely do it at Rayners?