 In 2004, he took his doctorate under Professor Simon Bainbridge at the Royal Academy of Music.He also received tuition under Jonathan Harvey, Tod Machover and Simon Emmerson.In 1994, Nunn was awarded the Gregynog Composition Prize for "Colour Cycle" and in 1995, the BBC Radio 3 Composing for Children prize as part of the BBC's Fairest Isle festival for his work "Songs of our Generation".