Orienteer wrote:


Apparently the signals on the Wimbledon branch are prone to failure whenever
it rains! But they are the responsibility of Network Rail.



I infrequently catch tubes at Wimbledon Park and it's been "alright"
(for fairly respectable values of alright) for the last few weeks. This
morning, after the first decent rainfall for a while and, bosh, signal
problems.

There could be something in your "apparently" ...