“In some ways it was cool and in some ways it trapped us,” he said. “The way we do that show is not compatible with full serialisation. We’re going to do the first show [this season] and maybe don’t have to sitcom wrap it up at the end.

“The first 18 seasons of the show, we spent so much time thinking how do we get this back to resolution” he continued. “And no TV shows do that anymore. You’re so used to watching shows now where it doesn’t end at the end, it teases the next one.”