As fans await the latest series of eight new episodes, Matt Smith has been commenting on the script, written by Steven Moffat, for the 50th anniversary special, likely to be broadcast this November.
"I read it and I clapped at the end. I think it's hilarious, it's epic and it's vast," he said. "It manages to pay homage to everything - and look forward."
Moffat, meanwhile, says he's been taking special security measures with the script...