Loserville is a musical with music and lyrics by James Bourne and Elliot Davis, originally created for Youth Music Theatre UK. The story is based on an album, Welcome to Loserville from Bourne's second band, Son of Dork.

British Youth Music Theatre (BYMT), formerly Youth Music Theatre UK, is a UK-based national performing arts organisation founded in December 2003. BYMT provides music theatre training to young people aged 11–21 and a stepping stone to drama school or conservatoire. Members can join either through auditions in January and February onto productions or, without audition, onto summer camps. Most of its productions and summer camps are residential and situated around the UK with productions taking place in both regional and London theatres.