In message , CJG
writes
And in years of coming to London on a bi-weekly basis I have never ever
seen any kind of police officer on London Underground property.

They are often hanging around KX booking office. There were three or
four in flack jackets there yesterday early evening. Didn't appear to be
doing much to discourage the "dun wiv yer travelcard mate" brigade
lurking at the top of the exits.
--
Roland Perry