By Matthew Somerville.
This map shows all trains on the London Underground network in real time, in the style of the map in Skyfall after seeing they had a version of my original map :-)
I have similar things for the London buses and National Rail, and an awesome bookmarkable train times journey planner. Donate
— Matthew
Live departure data is fetched from the TfL API, and then it does a bit of maths and magic. Some H&C and Circle stations are missing in the TfL feed.