The chief executive of security firm G4S told the BBC Radio 4 Today programme that they "deeply regret" failing to supply enough staff for the Olympics. Nick Buckles said the firm underestimated the task and will have to pay the Ministry of Defence to bring in troops to cover the gap.
He said many of the candidates that applied were students or had come from other jobs so the training period was left until the last few weeks. Mr Buckles added that they only realised in the last 8 or 9 days that G4S would not meet their target.
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