Alexander Jonathan Lawther (born 4 May 1995) is an English actor, known for portraying James in the Channel 4 series The End of the F***ing World, and for his acclaimed role as Kenny in the season three episode "Shut Up and Dance" of the Netflix series Black Mirror. He is also known for playing the young Alan Turing in the film The Imitation Game (2014), where he won the London Film Critics' Circle Award for Young British Performer of the Year.