Starts on September 27 on ITV2. The series is based on a book by call-girl “Belle Du Jour” who first detailed her sexual adventures on the internet.

Actress Billie Piper – 25, is playing a high-class call-girl. Billie in her steamy scenes and photos has already caused stir. Actress is also seen in a threesome and even appears completely nude in a darkened boudoir-like room.

Billie’s role as a high-class prostitute called for a number of raunchy, semi-nude scenes, which reportedly upset her fiance Laurence Fox, and prompted her to embark on an intense fitness regime.

Billie said: “I was just very aware of the fact that I was going to be naked a lot of the time and I didn’t want to have to think about that as well as the fact that I was doing endless sex scenes. So I did quite a bit of running.”

Fiance Laurence, who the actress is rumoured to being marrying in December, was said to be less than thrilled by the sexual scenes involving his fiancée.

For the critics she said:

I think the thing to remember in all of this, before I get upset thinking I’m not being a responsible grown up, is that I’m just telling this girl’s story and, you know, it’s been a book, a successful book. Her tale is very different to others. She very much enjoys this life but, as we all know, it can be a dicey existence and it can be really horrendous.