London 2012: G4S's Nick Buckles regrets taking contract
17 July 2012 Last updated at 18:42 BST
The head of security company G4S has said he regrets it ever took on the Olympic security contract.
Nick Buckles faced fierce questioning from MPs today where he admitted the company's performance had been "a humiliating shambles".
As he gave evidence, it emerged that yet more of the company's staff had failed to turn up for duty at the Olympic venue of Box Hill in Surrey.
The company may lose £50m from the £284m Olympic contract because it cannot supply enough guards.
Tom Symonds reports.