Billie Piper Doctor Who returns as Belle, who is Hannah when she's off the clock, and she's just as gorgeous and engaging as she was in the previous three series. However, this season there seems to be something missing. When we left her at the end of season three, Belle is jetting off to a holiday in the Maldives with a client, just as Hannah's best friend and confidante, Ben Iddo Goldberg has professed his love in a hand-made valentine. The two weeks away is supposed to allow her to make up her mind about Ben, but as episode one of the final season opens, we find Belle no closer to a decision. In fact, she's more concerned with her new home and all of its finery. This is where viewers have the first inkling something is amiss, because despite all the absurdities in prior seasons, and Belle's unabashed love for her work, she's always cared for Ben.
It stars Billie Piper as Belle , a high-end London call girl. The series has been compared to Sex and the City by many critics, mainly due to its humorous approach to sex. The series was initially developed with Channel 4  and when Channel 4 passed on the project, ITV took over. The song runs whilst the intertitle plays, showing Belle applying make-up and getting dressed, interspersed with shots of urban London. The series, set in London , revolves around the life of Hannah Baxter Billie Piper , a seemingly normal young woman who lives a secret life as a call girl , under the pseudonym Belle.