Billie talks marriage, motherhood and meeting Belle

As opening shots to interviews go, you don’t happen upon much jollier than Billie Piper’s. “Shall we get champagne?” she suggests. Why ever not! Within 15 minutes she’s downed a flute, accidentally knocked it over with the sleeve of her voluminous Topshop sweater dress, emptied a half-pint of fizzy water and filled it up with 50-quid-a-pop sparkle.

She looks stunning. At 26 and the mother of one-year-old Winston, she has grown into her big, gobstopper facial features and has shed all of her baby-weight. “It was literally just about going mental for six weeks,” she says, of her post-Winston eating regime. “I think I was quite lucky. I wasn’t massively healthy. I just ate loads of protein. It’s either that or speed pills, and the thing is you do actually have to sleep at some point. You’ve got to try and maintain a healthy marriage and I’m not sure that amphetamines are that conducive to a successful relationship.”

Read more of Billie's interview here