"I had a hunch it would be ambitious because I knew the comic books. It's almost like a graphic novel, the visuals are a completely different world in terms of turning the world upside down and using magic," he said
"It might be the end of an era. It feels like the end of an era, to be honest. It goes to a place where it will be pretty hard to follow on immediately," Mr Cumberbatch said
Most fans of the actor might have missed the incredible moment but luckily, concertgoers did not waste any time to share, on social media, the captured performance on their phones
"I am thrilled both as an actor and producer to be working on bringing this most treasured of English novels to the big screen," said Benedict, who read the novel several years ago