Boris Johnson has announced that the military personnel who have been brought in to protect the Olympics and Paralympics will get free use of public transport. Personnel who are wearing their uniforms will be allowed to use Transport for London services without being charged.
A committee of MPs has said the problems with recruiting security staff for the Olympics should have been foreseen.
The boss of the government's Olympics' security contractor G4S has faced a dressing down from MPs for his firm's poor performance.
The head of G4S is under pressure to quit his £830,000-a-year job as he prepares to face questions from MPs