'At least 5 years' for Doctor Who
Doctor Who will remain on screen for at least another five years, its executive producer Steven Moffat has said.
The BBC1 sci-fi drama recently celebrated the 10th anniversary since its relaunch.
Mr Moffat told Doctor Who Magazine that he expects the show to "do a minimum of 15" years in total, but it could go on for even longer.
"I thought it would last 10 years... It's going to do a minimum of 15. I mean, it could do 26!"
Moffat said that finding new doctors for the show - currently starring Peter Capaldi as the Time Lord - had been difficult.
He said: "It's not easy to find new people. It's not easy to find new doctors.... There's nothing easy about doing Doctor Who."
He called the ratings "extraordinary", saying that "10 years on, our ratings are pretty much the same. Actually, internationally, bigger. No show does that! You're meant to go down!"
Doctor Who was brought back by the BBC in 2005, starring Christopher Eccleston as the ninth Doctor. The new series is expected to return this autumn.