This question is has been bugging me since I started thinking about it this morning.
How many National Rail or London Underground stations always have a train of some description on one of their normal service platforms, 24 hours a day? Which stations are they?
(It doesn't have to be the same train on the same platform throughout the whole day of course)
How many National Rail or London Underground stations always have a train of some description on one of their normal service platforms, 24 hours a day? Which stations are they?
(It doesn't have to be the same train on the same platform throughout the whole day of course)
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