You are right Tom. I thought it was quite good because it was all concentrated on one page, more of a quick reference. It seems though that the NR main maps pages have a greater selection, especially station interchange maps.
PS. got any more of that cake? Maybe Chocolate this time?
I'm not sure, but by taking clues, I can formulate a guess.
no end gangway
large destination screen
modern, cab access door
I personally we could be looking at a Thames/Chiltern turbo or a Networker, but I could very well be wrong.