Father of David Aylmer and Jennifer Aylmer.
He was awarded the OBE (Officer of the Order of the British Empire) in the 1950 King's Birthday Honours List and appointed a Knight Bachelor in the 1965 Queen's Birthday Honours List for his services to drama.
He played Lord Palmerston in three different films: Victoria the Great (1937), Queen of Destiny (1938) and The Lady with a Lamp (1951).
He played the Archbishop of Canterbury in both Henry V (1944) and Becket (1964).
He made five films with Laurence Olivier: The Temporary Widow (1930), As You Like It (1936), Adventure for Two (1943), Henry V (1944) and Hamlet (1948). Olivier also directed the latter two films.
He appeared in ten films with John Laurie: Her Last Affaire (1935), Nine Days a Queen (1936), As You Like It (1936), The Ghost of St. Michael's (1941), The Life and Death of Colonel Blimp (1943), Adventure for Two (1943), Henry V (1944), Caesar and Cleopatra (1945), Hamlet (1948) and Trio (1950).
Appeared in seven Best Picture Oscar nominees: The Citadel (1938), Henry V (1944), Hamlet (1948), Quo Vadis (1951), Ivanhoe (1952), Separate Tables (1958) and Becket (1964).
Is one of Kenneth Williams' impressions of "people you've never heard of".