Incidentally, Herne Hill flooded in exactly the same spot around 10 years ago, though that was rainwater.
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Mr Khan said the image of an Asian woman on a see-saw with an aggressive finger-jabbing white skinhead reinforced stereotypes.
The Central Line's from Essex, the Bakerloo Line is beginning to show its age and the Piccadilly Line is tourist glad to be in London.
The bitter war of words goes from bad to worse.