Some of London Underground's
1400 linked CCTV cameras

Just because you are feeling paranoid, it does not mean that they are not watching you

Quis custodiet istos custodes ? Keeping a eye on the southbound Bakerloo line, Piccadilly Circus

 Dual fixed camera mount

London Underground - buskers & beggars usually sit underneath such fixed cameras. The British Transport Police control over 1400 cameras on the Tube and another 1800 on Railway Stations from their control room by Victoria Station.