doctor who | Doctor Who: New actor to be revealed after Wimbledon Doctor Who showrunners will tonight reveal the identity of the show's new lead, and speculation is rife that a woman will step into the Doctor's shoes for the first time. The 12th Doctor, actor Peter Capaldi, announced in January he would be leaving the BBC's long-running cult classic at the end of this year. The BBC said the announcement would take place immediately after the Wimbledon men's singles tennis final. A teaser trailer featuring the 13th doctor in various locations has already aired, sending fans into a frenzy. Actor Kris Marshall and actress Jodie Whittaker are reportedly among the favourites to take on the new role. Phoebe Waller-Bridge, Tom Rosenthal, Michaela Coel, Tilda Swinton, David Harewood and James Morton have also been named as possible candidates.