There are different types of double act: the classic dumb-and-dumber, like Morecambe and Wise; the good cop/bad cop, where one's a bit spiky and the other's daft. Sue Perkins and I take what we might call the Ant and Dec approach: the double act came out of our friendship.

I grew up with Morecambe and Wise, they were part of Christmas, part of Easter, part of our lives. They were the top comedy act on television, watched by 25 million people.