Fibre jointers Mark Richardson (L) and Andrew Shaddick work near the Riverbank Arena in the London 2012 Olympic Park at Stratford in London July 12, 2012. Preparations for the London Olympics have put Britain's intelligence agencies under significant pressure, as the country stages its largest ever peacetime security operation, MPs said on Thursday.
REUTERS/Luke MacGregor (BRITAIN - Tags: SPORT OLYMPICS BUSINESS CONSTRUCTION)