Master and Commander: The Far Side of the World (2003)
Peter Weir's 2003 Patrick O'Brian adaptation. Russell Crowe as Aubrey, Bettany as Maturin.
James D’Arcy played Anthony Perkins in Hitchcock, which required him to impersonate a performance instead of a person, and it is a peculiar and successful piece of work.
Dunkirk gave him a naval officer alongside Kenneth Branagh, and Cloud Atlas gave him multiple roles across timelines.
Agent Carter gave him Edwin Jarvis, and he directed a feature, Made in Italy, starring Liam Neeson. He came from British theatre.