Daniel Radcliffe has been sober for two years.

Speaking to the Times newspaper's magazine, he explained: "There are moments when you go, 'Oh, I can't do this. I have too much to lose. I don't want to screw this up ... I still smoke though: I still have vices."

However, the handsome star, who has had a number of relapses over the years, finds his willpower is tested to its maximum when he returns to his native London.

He said: "That's one of the things I find really hard about being here actually - it's very hard to say to somebody, 'Do you want to meet up for coffee?' Or 'Let's go out for dinner.'

"It's weird: they think you're asking for a date. But it's like, 'I just want to see you but not go to a place where we have to drink.' "