He was known for roles in the Thor films and the Divergent series, as well as several UK TV shows like Band of Gold, Peak Practice and Murphy's Law.
His US-based publicist firm, Viewpoint, confirmed his death to the BBC but did not provide any further details.
No cause of death has been revealed but he was reportedly hospitalised during filming on the Italian island Ischia.
At the time of his death, he was working on an action movie, Cassino in Ischia.
His death was announced four days before his 59th birthday.
