if you have a chance of see this film do see it . it quite shock in part and really make you think about so many important issue but it not didactic . in my opinion it a piece of art . beautifully film and fine music of many style and the typically impressive level of act that one have come to expect from bbc drama . nathalie press ( bill a natalie press ) be convince in her role a depressed teenager exploit by a male classmate . celia imrie have that beautifully reassure quality that give the sometimes unnerving action stability and the viewer comfort in the knowledge that someone out there be actually normal and but the real star a always be timothy spall surely one of the great actor of our time .