 In 2007, he joined a list of British actors, including Kate Winslet and Orlando Bloom, to have guest starred in the long-running medical drama "Casualty".Hiddleston is well known for his portrayal of Loki in the 2011 Marvel Studios film "Thor".He was invited to audition by Kenneth Branagh, the film's director, after having previously worked with Branagh on "Ivanov" and "Wallander".