Mark Gatiss: I used to swim in this pool. And if anyone had ever told me that one day, I would be making Sherlock Holmes in that pool. I would’ve said, you have come from the future and—
Benedict: (imitating Mark as a child) You’re lying! And I can’t understand what you’re saying!
Mark: I would’ve said that, yes. (laughs)
Benedict: What if Matt Smith had appeared and told you that? Then you might’ve believed him.
Mark: I would’ve gone, ‘Doctor Who’s still on? Wooo!’.