He played Loki in The Avengers and Thor, and starred in Woody Allen's Midnight in Paris. His role in The Avengers earned him the 2013 MTV Movie Awards for Best Fight and Best Villain.
He earned a lot of praise for his performance as Captain Nicholls in the 2011 WWI drama, War Horse.
He portrayed F. Scott Fitzgerald in Midnight in Paris, which featured Owen Wilson as the lead.
He was raised in Wimbledon and Oxford by his mother, who worked as a stage manager, and his father, who directed a pharmaceutical company. One of his first roles was on the British comedy TV series, Suburban Shootout.
His mother was an arts administrator and his father was a physical chemist. He was raised with an older sister and a younger sister. He briefly dated Thor co-star Kat Dennings then began a relationship with Elizabeth Olsen.