Leo is Principal Oboe of the Academy of Ancient Music and appears regularly as guest-principal with, among others, the English Baroque Soloists, the Sixteen, the Dunedin Consort, Arcangelo, La Nuova Musica, the English Concert, and the Orchestra of the Age of Enlightenment. As a chamber musician and concerto soloist, he has performed at the Wigmore Hall, the Royal Festival Hall and live on BBC Radio 3.

He is Artistic Director of Opera Settecento, with whom he has conducted many critically acclaimed performances including the modern-day premières of Hasse’s Demetrio, and Handel’s pasticcio operas, Elpidia, Ormisda and Venceslao at the London and Halle Handel Festivals. In 2022 he will conduct the première of Bärenreiter’s new edition of Handel’s Fernando.

Always eager to challenge the status quo in search of overlooked aspects of performance practice, Leo is dedicated to research. He has made editions of numerous eighteenth century works and is currently preparing the AAM’s highly praised performing edition of Handel’s Brockes Passion for publication.