'71 constantly thrills without sensationalizing its surprises. The war-is-hell ethos drives it forward, so that the movie retains its suspense in conjunction with its dour outlook.

A vivid, shivery survival thriller that turns the red-brick residential streets of Belfast into a war zone of unconscionable peril.

This outstanding, muscular feature debut for French-born, British-based director Yann Demange almost never puts a foot wrong, from the softly underplayed performances to the splendidly speckled cinematography and fine-grained period detailing.

It's a film that holds you in a vice-like grip throughout; only wavering towards the end with a faintly preposterous climactic shootout.

The villainy is, perhaps unavoidably, somewhat signposted, but this is a tense, gripping thriller that combines real-world relevance with high-concept entertainment. In a superb ensemble, O’Connell is outstanding.