Kate Jarvis is on great form here as the vulnerably odious "Mia". Living with her mother and sister, she is unruly and uncaring. Nobody cares about her and she cheerfully reciprocates. That is, however, until her mum (Kierston Wareing) brings home a hot new boyfriend. "Connor" (Michael Fassbender) has no time for her histrionics which infuriates her even more. Meantime, she has determined to free an horse that is owned by some local lads and chained near their caravans. Armed with an hammer, well that doesn't quite go to plan - but she does meet "Billy" (Harry Treadaway) so maybe it's not a…