Came out of the tube around 4pm today to find a ton of cops in the station, with travellers being directed through an airport style, full body metal detector.



The presence was heavy - at least three armed police at the top of the stairs carried pistols *and* machine guns!

Apparently, the armed-to-the-teeth police presence was there to 'dissuade' people form carrying knives to the Carnival in Notting Hill.

More photos here: armed police at Brixton tube