Third head rolls in G4S Olympic fiasco

Paul McCartney's former bodyguard has become the third director to leave G4S following the company's Olympics security debacle.

G4S said Mark Hamilton, who was head of Olympic security, had left the company "by mutual consent". He joins chief operating officer David Taylor-Smith and global events director Ian Horseman Sewell, who both resigned in September following an internal investigation.

G4S's woes have not affected outsourcing rival Capita, which yesterday said it had won contracts worth £1.7bn this year.