http://www.bbc.co.uk/news/entertainment-arts-38801228 Former Doctor Who actress Billie Piper has said it is time for a woman to take on the role of the famous Time Lord. Peter Capaldi has announced he is stepping down from the lead role in the BBC sci-fi series at the end of the year. Piper, who played companion Rose Tyler, said it would "feel like a snub" if the role didn't go to a woman. "I've always supported the original format but I don't know where they can go from here," she told the BBC. "I think it would be great [to have a female Doctor] given the spirit of the world at the moment. I think it would be timely". But she said taking on the role herself was too much responsibility. "I don't know," she said. "It's a lot of work. It would be a lot of time in Cardiff." Piper was speaking at the Critics' Circle Theatre Awards in London where she won the award for best actress for her role in the play Yerma at London's Young Vic. Piper, who played a young woman driven to extremes by her desire to have a child, will reprise her role at the same theatre in July and August. Capaldi, who plays the 12th Doctor, will return for a new series of the show in April, with his final episode shown at Christmas. His final series also marks the departure of lead writer and executive producer Steven Moffat.