Three Tube Mice on the London Underground

Which Tube Line has the most rodents?

Coming back from my book group last night I was waiting at Piccadilly Circus, on the Piccadilly Line, heading towards Heathrow and I saw three mice. They weren't all on the track, two were. But one was scuttling around on the platform near the signals where the front of the train would be (the bit that is cordoned off). Sadly I have never been able to take a picture of Tube mice, as the little bastards are way too fast.

Mecca's book - One Stop Short of Barking claims that Waterloo (northbound on the Bakerloo Line) is a particularly good place to spot mice, and says that they are most likely to be found wherever more food wrappers are dropped.

In her book she cites a station assistant announcement to a couple of kids who were peering at some mice on the track:

"'This is an announcement for the two children near the edge of the platform. Please do not stare at the mice under the tracks, as they are in fact Albanian killer mice and very dangerous. Please stand well back from the platform edge'

As the kids stopped looking and sheepishly backed away, the same voice came back over the system: 'This is an announcement for the mice on the station: "Eek, eek, eek, eek, eek!' Thank you"