Dave Arquati wrote:

Some particular National Rail lines are included on the map as well as
Crossrail 1, Thameslink 2000, the ELLX, Cross River Transit, DLR
extensions, East London Transit, Greenwich Waterfront Transit, the West
London Tram, the Croydon Tramlink extensions, the Croxley Link, Terminal
5 and Stratford International.

What's with the Thameslink line that goes from St Pancras through
Finsbury Park and then up north somewhere?