The British actor admits he "enjoyed" getting angry and cursing other drivers when out for a ride, but he toned down his behaviour behind the wheel after shooting to stardom as cop Jimmy McNulty in the hit drama show.
He tells The Sunday Times Magazine, "One of the great things about anonymity is that you can enjoy road rage, but you can't when people know who you are. In one altercation, the driver looked at me and said, 'Oh my God, it's McNulty'."
