Billie Piper has started shooting the second series of ITV2’s risque hit series, Secret Diary of a Call Girl.

The independently produced series gave the digital channel record audiences of two million viewers when it screened in 2007.

The eight-episode second series will see Billie reprise her role as Belle de Jour (real name Hannah), an escort who plies her trade in the upmarket London scene.

The new series will see Belle become an unwilling mentor to a young wannabe escort Bambi, played by Ashley Madekwe.

As well, ‘Hannah’ meets a handsome doctor, Alex, and faces the call girl’s ultimate dilemma: can she keep her job as a prostitute while she falls in love?

Secret Diary of a Call Girl will screen on ITV 2 in September.