London 2012 can ape success of 1948

It's less than a year until the London Olympic Games opens but, admits one expert on the event, 'the economic model and delivery of a 'legacy' plan are challenged by staggering levels of public debt amid financial meltdown'. But, says Matt Rogan, author of a compelling study of London and its three modern Olympiads, "we've been here before". In the second part of our conversation about the London Games, he tells me how.