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Earlier this year, Elba confirmed shooting would kick off at some point in 2021, telling Variety he felt 'so excited' for the project, which has been 'a long time coming'.
And now the cameras are very much rolling, as the star confirmed when he shared a photo of a branded Luther clapperboard, dated 27 October, which bears the names of director Jamie Payne and Director of Photography Tom Stern.
In another picture, we also see a glimpse of Elba in character as the titular detective DCI John Luther, having shared a close-up of his outfit from above.
Tagging the post 'On Set', Elba captioned the post: "Oi......I'm back!" he captioned the post.
So far, there have been five series of the BBC crime drama, the first of which aired back in 2010.
However, Elba has been keen to take the character to the big screen for a while, and has been talking about the prospect for a number of years.
The most recent series was broadcast over four consecutive nights in 2019, and Elba said it set things up perfectly for a movie.
In an interview with LADbible, he said at the time: "When you scale a movie up, you have to give it size - that means taking it into other territories, internationally, but I still think it will feel like the 'Gotham City' in London. But obviously on a bigger international scale, it could take us anywhere.
"I'm really up for the movie now. I'm really up for it. And I think this season is set up to tee that up."
He continued: "We've made varied seasons, one season was six episodes, one was four - Luther's adaptable.
"I think if we can figure out the formula to keep an audience captivated for an hour and a half, on a movie, I think Luther has definitely got the attributes to make that happen."
Speaking to reporters after receiving a Special Award at the BAFTA TV Awards last year, Elba also said he has big ambitions for the film.
"I've maintained I'd like to see it come to a film, and that is where I think we are heading towards - a film," he said. "And I'm looking forward to making that happen. It is happening.
"With film, the sky is the limit. You can be a little bit more bold with the storylines, and a little bit more international, and a little more up the scale. But John Luther is always going to be John Luther."
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