So there's a 'secret' curve of track on the Tube out in Zone 7 called the "North Curve" out between Rickmansworth and Croxley ... which only a small number of trains use, but who travels on them? It was time to get up early and find out, and tick off the North Curve - in both directions - to say that I'd done it.

If you'd like to help support my channel - thank you! - I have a Ko-Fi page here: https://ko-fi.com/geofftech

You can download the Underground's Working Timetables here: https://tfl.gov.uk/corporate/publicat...