Haveron has served as the leader of the John Wilson Orchestra since it was established in 1994. Between 1999 and 2007, he was first violinist of the Brodsky Quartet, recording many albums, several of which won awards, including the Diapason d'Or and the Choc du Monde de la Musique. He also worked with Anne Sofie von Otter, Alexander Baillie, Paul McCartney, Sting, Kathryn Selby, Elvis Costello, and Björk, and appeared with the Nash and Hebrides ensembles, the Logos Chamber Group, and the Omega Ensemble. He led the World Orchestra for Peace at the invitation of Valery Gergiev.[1]
In 2007, Haveron was appointed as concertmaster of the BBC Symphony Orchestra, in 2012 joined the Philharmonia Orchestra, and since 2013 has been co-concertmaster of the Sydney Symphony Orchestra.[1]
Haveron continues his career as a lead violinist and currently plays a Guadagnini violin on loan to the Sydney Symphony Orchestra.[1]