Peter Mandelson is in a state of confusion. “I have to keep reminding myself I am a member of this government,” he says. Even more disconcertingly, Britain’s business secretary and comeback king briefly appeared in danger of becoming popular. “Tony Blair used to say his mission would be complete when the Labour party learned to love Peter,” Lord Mandelson recalled this week. “In my first few weeks back in the government there was a risk of that coming true. I found it all slightly disorientating.”