Question: What was the the coming-of-age drama released in 2006 which stars one of the co-starring actors of British thriller film Tower Block?
Sentence (from "Tower Block (film)"): The film stars Sheridan Smith, Jack O'Connell, Ralph Brown, and Russell Tovey and entails residents of a block of flats targeted by an unseen sniper after witnessing the murder of a teenager.
Relevant evidence: Yes