The final episode of season four of 'Sherlock' will be shown in cinemas.

Benedict Cumberbatch

Benedict Cumberbatch

More than 300 cinemas in the UK and Ireland, including Vue, Empire, Cineworld and Odeon chains, will show the episode 'The Final Problem' in January 2017.

Sherlock producer Sue Vertue said: "Fans clearly enjoyed the opportunity of watching 'The Abominable Bride' in cinemas last time so Hartswood Films are thrilled to be working with BBC Worldwide again to do the same for this series four finale."

Mat Way, BBC Worldwide's Commercial Director of Live Entertainment, said: "The incredible filmic qualities of 'Sherlock' make it perfect cinema viewing.

"We are delighted to be able to offer the UK and Irish fans the opportunity to enjoy the epic 'Sherlock' finale on the big screen."

Speaking previously about the upcoming dramatic fourth season, Benedict hinted that fans might need a break after all of the excitement.

He said: "First and foremost we have got a fourth series for people to watch and understand and when they watch it they might go 'Oh yeah, maybe there does need to be a break now' because of what happens in it. No spoilers!"

And he admitted that fans could have to wait longer than ever before for the next installment after these episodes air.

He said: "I think there will be a lull. I don't think it will be in a year and a half necessarily but we will wait and see and maybe it will be."