The book came out in February 2008 with Penguin UK and Random House US and the film, produced by Warp Films and directed by Richard Ayoade, was released in March 2011. I had a cameo as a drama teacher in mourning, which got cut.
It won the Curtis Brown Award, was shortlisted for the Wodehouse Prize and Commonwealth Writers Prize (Best First Book, Eurasia), was longlisted for the Wales Book of the Year and the Desmond Elliot Prize.
The good reviews. Find the bad ones on your own.