And by the way, on this theme, one of my abiding memories of the Olympics is of the 70,000 or so voluntary workers. If they had been paid the minimum wage it would have cost in the the order of £35m. That's hadly small change, but as a proportion of the money spent on the Olympics it is small change. For comparision, the management fee for G4S for not actually getting round to providing security was £57m.