What was Alec Guinness’s role in Great Expectations?

Great Expectations is a 1946 British film directed by David Lean, based on the novel by Charles Dickens and starring John Mills, Bernard Miles, Finlay Currie, Jean Simmons, Martita Hunt, Alec Guinness and Valerie Hobson. It won two Academy Awards (Best Art Direction and Best Cinematography) and was nominated for three others (Best Picture, Best Director and Best Screenplay).

In 1939, Guinness adapted Charles Dickens' novel Great Expectations for the stage, playing Herbert Pocket. The play was a success. One of its viewers was a young British film editor, David Lean, who would later have Guinness reprise his role in Lean's 1946 film adaptation of the play.