British actor best known for his starring role as Alex DeLarge in Stanley Kubrick's A Clockwork Orange, based on the novel by Anthony Burgess. He has also played roles on Entourage, Star Trek Generations, and Our Friends in the North. In 2012, he received a star on the Hollywood Walk of Fame.
His first few jobs involved serving drinks at his parents' pub and working as a coffee salesman.
Trey Parker, creator of South Park, considers him to be one of his favorite actors. He invited the actor to appear, un-animated, on his show.
He married Mary Steenburgen in 1980. The couple had two children, Charlie and Lilly, before separating in 1990. He married Kelley Kuhr in 1991, with whom he has three sons. His nephew is actor Alexander Siddig.
He had a recurring role in the Amazon Prime series Mozart In The Jungle, acting alongside Saffron Burrows.