Bloodsong by Melvin Burgess
'You thought you were watching my death,' hissed the dragon. 'But you were watching your own.' And then he lunged. Forced into the clutches of a bloodthirsty dragon, Sigurd is fighting not only for his life, but for the survival of an apocalyptic Britain. For Sigurd is the chosen one, the golden warrior boy blessed with the courage of a hero and the strength of a lion. In a world where power and corruption are all consuming, can he fulfil his destiny and overcome the tyranny that threatens to destroy him?