Doctor Who showrunner Russell T Davies has said that conversations are ongoing about who might eventually replace him on the iconic sci-fi show.
"I won't go back a third time," he said on David Tennant's podcast. When Tennant reminded him he'd said that about returning for a second time, Davies commented: "That's very true, but I'm not getting younger, darling. My god. But I will need to slow down at some point. No, that'll come."
