Brie Larson and newcomer Jacob Tremblay play a shut-in mother and son in this serious awards contender.
Based on the best selling novel by Emma Donoghue, Room is the astonishing new film from Frank and What Richard Did director Lenny Abrahamson.
It tells the story of a young mother (Brie Larson) forced to raise her son in isolation from the outside world and boasts a sensational breakout performance from Jacob Tremblay, who provides the bittersweet voiceover in this first UK trailer.
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Room is released in the UK 15 January 2016.
