He praised the drama and told Chinese viewers who submitted the request to him online that he would try. But Cameron has yet to contact them, Vertue said this week.
A droll Moffat added: “David Cameron, calling you on that, mate. ... All of China, they're waiting.”
The British-produced modern take on Arthur Conan Doyle's fictional detective has been a worldwide hit.
It made its third-season U.S. debut Sunday on PBS, with husband-and-wife team Moffat and Vertue and star Benedict Cumberbatch on hand to promote it.
Fans have to make do with just a handful of episodes — three this season — as the show's in-demand makers and cast, including Martin Freeman and newcomer (and Freeman's real-life partner) Amanda Abbington, see to other projects. That includes the “Doctor Who” series for Moffat, “The Hobbit” franchise for Freeman and a string of films for Cumberbatch.
“No, it's a waste of time, sorry, China,” Moffat replied when asked if “Sherlock” might be expanded to more episodes. The nine that have aired since 2010 are the equivalent of cranking out nine movies, he and Vertue said.
But why apologize to the Chinese and not devotees elsewhere?
“Well, China were the ones who went to the top and asked,” Moffat said.
He and Cumberbatch, who said he appreciated fans' fervor, agreed they are committed to keeping “Sherlock” going indefinitely.