CCTV shows 7 July Tavistock Square blast

CCTV footage shows the moment suicide bomber Hasib Hussain triggered his device on a number 30 double-decker bus at Tavistock Square, London, on 7 July 2005. He killed 13 people.

The vehicle came to a standstill outside the British Medical Association and many of the victims were treated by doctors in the building's courtyard.