50% chance of bomb at Olympics: whistleblower

A whistleblower involved in training staff for security firm G4S has said he believes there is a 50% chance someone could carry a bomb into one of the Olympic venues.

He also claimed in an interview with Sky News that, because of pressure to recruit staff, corners had been cut and some staff were not up to the job.

The whistleblower told Sky’s senior correspondent David Bowden he had seen a lot of unprofessionalism and a slack approach to security training.