[Toby Jones] is completely different. It's a completely different character. He's the darkest villain we've had. There was always something charming and engaging about Moriarty. There was something fascinating and actually amoral, rather than immoral, about Charles Augustus Magnussen. This guy is the purest evil. Sherlock [Holmes] is actually appalled by him.

I always wanted to do Restoration comedy. It seems like so much fun.

I used to go to the gym regularly and swim an awful lot, but that was when I was unemployed and knew leisure intimately.

Europe is so much the home of Horror, with its myths of vampires, werewolves, witchcraft and the undead, yet it's like those myths were exported to Hollywood, leaving Europe the room to develop a new tradition as a way of processing its traumas, particularly the two world wars.

When I was your age — about, ooh, a thousand years ago — I loved a good bedtime story. The Three Little Sontarans. The Emperor Dalek's New Clothes. Snow White and the Seven Keys to Doomsday, eh? All the classics.

It was all quite ghastly and I was very fond of it.

Benedict is bumbly, sweet, affable; the nicest man you've met.