Arthur Lowe — British Actor born on September 22, 1915, died on April 15, 1982

Arthur Lowe was an English actor. His career spanned over thirty years, including starring roles in numerous theatre and television productions. He is best known for playing Captain Mainwaring in the British sitcom Dad's Army from 1968 until 1977. He was nominated for seven BAFTAs and became one of the most recognised faces on television... (wikipedia)

An actor is an actor is an actor. The less personality an actor has off stage the better. A blank canvas on which to draw the characters he plays.
Acting must be scaled down for the screen. A drawing room is a lot smaller than a theatre auditorium.