Baillieu has collaborated with top singers including Dasch, Ian Bostridge
, and Kiri Te Kanawa
, as well as instrumentalists such as the Elias and Heath Quartets. He plays several concerts a year as a soloist, and has appeared with the Ulster Orchestra
, the English Chamber Orchestra
, and the Wiener Kammersymphonie. Baillieu made his recording debut in 2013, backing tenor Ben Johnson
in Britten's The Canticles, and he has been sought out by singers for albums on the boutique Champs Hill
labels. In 2018, he joined both singers and instrumentalists for an album of music by Reynaldo Hahn
In 2011, Baillieu was appointed professor of accompaniment at his alma mater, The Royal Academy.