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Not had your fill of crime-ridden tower blocks after The Raid and Dredd ?

Then train your crosshairs on this economical Brit thriller, as the last few residents of a soon-to-be-demolished hellhole find themselves being picked off by a mystery sniper.

The character arcs are predictable and the identity of the triggerman isn’t too hard to figure, but the action and anxiety are believable, the violence sudden and the performances – especially those of Sheridan Smith as an East End Sarah Connor and Jack O’Connell as a thug-come-good – are strong.