Over the last few weeks I’ve been using Undergroundgal’s line a lot. I’ve never met her but I’ve spent the time on the platforms amusing myself by inspecting incoming drivers and trying to decide which one she is. I often do this though usually it will be because I actually know a driver on another line and I’m looking to wave a hello. I like to think of it as trainspotting for the elite.

I think I got her today. Long reddish hair. I’m prepared to stake my train keys on it.