I think the neo-liberal consensus was already turning into something else due to its internal contradictions. Neo-conservatism of the sort displayed by Bush and nuLabour seems like a reaction to the social chaos that neo-liberalism creates, a reaction which blames that chaos not on economic factors essential to this form of capitalism, but on the libertarian-sounding bits of neo-liberalism's PR and tries to be seen as 'doing something' by being socially authoritarian in response.
The problem is that what it's turning into is much more repressive and authoritarian. I'd expect Cameron's mob to follow the same trajectory. Use a bunch of libertarian rhetoric to get elected then switch heavily into authoritarian mode once they don't have to worry about popularity contests and try to convince the general public that having the cops stomping on politically active citizens' faces is actually the solution to all their problems.
Whether that'll work with the jobless total rising, inflation wiping out savings while the fat-cats are paying themselves huge bonuses is another question.
If it doesn't work, there's always the Civil Contingencies Act though and I expect that it's knowing that they can shoot people if they feel they really have to that lets Mandleson and his pals feel so smug about all this stuff.