London Tube Stations Evacuated

LONDON - JULY 21: Police and Emergency services are seen having closed off streets in North London around Warren Street on July 21, 2005 in London. Three London underground train stations have been evacuated following the minor explosions which have hit the capitals transport networks. Warren Street, Oval and Shepherd Bush have all been targeted including a bomb detonated on a bus in Hackney. Reports have revealed there are no major casualties at this time. (Photo by Getty Images)