Its a British term. It means a street musician/entertainer who performs for money. Years ago they would all have been unlicensed/unofficial. The tube (London Underground train) employees were constantly chasing them out of the long winding station passageways.
Nowadays the tube has official busker patches in stations and they are allowed (or at least tolerated) in certain locations, such as the South Bank of the Thames.
This is the sort of guy you would have seen in the old days (and still do)

while this guy is on an official London Underground patch

and this rather attractive chap can be found "performing" on the South Bank...

I seem to recall there were a couple of cases of world famous classical violinists/cellists popping up and performing in tube stations, much to the delight of passing passengers.
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Dan Marchant
I am learning photo graphee - see the results at
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