Oliver Biles was born in England, UK. Biles trained at Mountview Academy of Theatre Arts in London, before his debut role in the 2011 Yellow Earth Theatre production of Why the Lion Danced, which toured the UK. Biles worked again with Yellow Earth Theatre on Dim Sum Nights - The Clean Up, opposite Jessica Henwick. In the same year Biles made his screen debut in the children's show House of Anubis, on Nickelodeon. In 2012 Biles performed in the premiere of the stage adaptation of Wild Swans produced by the Young Vic Theatre, opposite Katie Leung.