Category: Waterloo And City Line
The least complex Tube line of them all, the Waterloo & City Line (also known as the Drain) has only two stations. It's primarily used by commuters, and hence doesn't run at all on Sundays or public holidays.
Until mid-September 2013, it also used to stop early in the evenings, but a new timetable was introduced that month extending the running hours in line with other Tube lines.
Stations on this line (view them on a map):