Time Out says
That said, ‘Kidulthood’ still tears along at a good pace (aided by music from The Streets, Shystie, Dizzee Rascal and other UK artists), never bores, and has a certain novelty value: the real language and habits of our capital’s streets hardly ever make it to the big screen. The film’s ultimate downfall, though, is that its makers’ hunger for authenticity means that it’s all about events, events, events. Sober characterisation and plotting fall by the wayside. The film’s adult characters are especially two-dimensional (a cartoon Yardie; a posh father; a mother who shouts ‘Please use a condom’ through the bedroom door; a camp shop assistant). And what’s with the title? It sounds like a desperate youth-marketing tag. Or maybe I’m just not down with the kidults?
Cast and crew