He began composition lessons with Darren Bloom at Forest School. Leon was awarded a scholarship at Birmingham Conservatoire, where he completed an undergraduate degree in Composition in 2015 with Second Class Honours: First Division. Leon has taken lessons from Richard Causton, Edwin Roxburgh, Ed Bennett, Joe Cutler and Howard Skempton. He has also taken masterclasses from Mario Garuti, Colin Matthews and Richard Ayres. In third year, Leon won the Birmingham Conservatoire Orchestral Composition Prize. His scores are held in the Royal Academy of Music and American Viola Society libraries, and his pieces have been performed in various locations throughout Europe, the USA and South Africa.