David Tennant on the next Doctor being a female

Actor Peter Capaldi has announced he is stepping down from the lead role in the BBC series Doctor Who.

Capaldi, who became the 12th actor to play The Doctor in 2013, said he will leave at the end of the year.

David Tennant was the tenth Doctor in the series and told The World at One that Olivia Colman "would be a magnificent choice" for the next Doctor if the story was right.