Mark Gatiss recently addressed the possibility of a big screen return for the hit BBC series Sherlock, co-created by Gatiss and Steven Moffat. The series, starring Benedict Cumberbatch and Martin Freeman, ran for four seasons and a seasonal special from 2010 to 2017. In a recent interview with Deadline, Gatiss expressed interest in potentially bringing Sherlock back for a feature-length movie, but acknowledged that the main obstacle would be the availability of the cast.

Gatiss mentioned that it would be difficult to get everyone together for a potential film. He indicated that the decision ultimately rests with Cumberbatch and Freeman, suggesting that their schedules would need to align in order to make a return to the Sherlock universe a reality.

The final episode of Sherlock, titled "The Final Problem," left the door open for potential future adventures. The episode concluded with Sherlock and John rebuilding their Baker Street flat and taking on new cases, implying that while the show may have ended, their work as detectives would continue.

Behind the scenes, Moffat and series producer Sue Vertue have expressed their willingness to return for a movie or revival of the series. However, the passing of Una Stubbs, who portrayed Mrs. Hudson, the duo's landlady, in 2021 means that certain series regulars would not be able to make an appearance in any potential future projects.

While the possibility of a return to the Sherlock universe may be complicated by the busy schedules of the main cast members, Gatiss and Moffat remain optimistic about the potential for a revival.

With both Cumberbatch and Freeman balancing their roles in the Marvel Cinematic Universe, it may take some time before they are able to reunite for a potential Sherlock movie. However, the creators are prepared to return as soon as the opportunity arises.

In conclusion, while the future of Sherlock on the big screen remains uncertain, the creators and cast members are open to the possibility of a return.

The success of a potential revival will depend on the availability and willingness of the main cast, particularly Cumberbatch and Freeman, to reprise their iconic roles as Sherlock Holmes and John Watson.