Charlie Brooker's dystopian series Black Mirror is shifting gears for its forthcoming instalment and releasing a film in addition to its fifth season.

The news was confirmed today when a keen-eyed Netflix user spotted the title card for 'Bandersnatch' revealed it was a film and not an episode of the season as expected.

Whether this is the choose-your-own-adventure instalment that's been promised remains to be seen, but it looks likely the film will feature a time-warped London.

The word 'bandersnatch' was spotted on a poster giving notice of filming in Croydon One shopping centre, the same area where photographs emerged of retro refits of shop fronts such as WH Smith and Pizza Hut.

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A bandersnatch is a fictional creature that appears in Lewis Carroll's nonsense poem Jaberwocky. What relevance this character will have in the film is unclear but it might be a hint the story is more playful than melancholy.

Given the success of the Emmy-winning episode of season three San Junipero, the film might not only be a bigger play for more awards, but also have taken note that the episodes with a more hopeful message prove popular in our tech-fearing times.

preview for Black Mirror Season 5: All You Need To Know

Earlier this month Netflix tweeted (and then swiftly deleted) a preview of their December content with 'Black Mirror: Bandersnatch' scheduled for the 28 December. If this hasn't been changed after the leak, fans will be treated to a Brooker concocted film before the year ends.

Miley Cyrus confirmed earlier this month that she would be appearing in the fifth season of the Netflix show, but beyond that details are scarce.