1930s
Evensong (1934)
Role: extra, uncredited
1940s
Great Expectations (1946)
Role: Herbert Pocket
Oliver Twist (1948)
Role: Fagin
A Run for Your Money (1949)
Role: Whimple
Kind Hearts and Coronets (1949)
Roles: Ascoyne d'Ascoyne; Henry d'Ascoyne; Canon d'Ascoyne; Admiral d'Ascoyne; General d'Ascoyne; Lady Agatha d'Ascoyne; Lord d'Ascoyne; Ethelred d'Ascoyne.
1950s
The Mudlark (1950)
Role: Benjamin Disraeli
Last Holiday (1950)
Role: George Bird
The Man in the White Suit (1951)
Role: Sidney Stratton
The Lavender Hill Mob (1951)
Role: Holland
The Card (1952)
Role: Edward Henry 'Denry' Machin
The Captain's Paradise(1953)
Role: Captain Henry St. James
The Square Mile (1953)
Role: Narrator
The Malta Story (1953)
Role: Flight Lieut. Peter Ross
Father Brown (1954)
Role: Father Brown
The Stratford Adventure (1954)
Role:
To Paris with Love (1955)
Role: Col. Sir Edgar Fraser
Rowlandson's England (1955)
Role: Voice part
The Prisoner (1955)
Role: The Cardinal
The Ladykillers (1955)
Role: Professor Marcus
The Swan (1956)
Role: Prince Albert
Bridge on the River Kwai (1957)
Role: Colonel Nicholson
Barnacle Bill (1957)
Role: William Horatio Ambrose
The Horse's Mouth (1958)
Role: Gulley Jimson
The Scapegoat (1959)
Role: John Barratt/Jacques De Gue
1960s
Our Man in Havana (1960)
Role: Jim Wormold
Tunes of Glory (1960)
Role: Major Jock Sinclair
A Majority of One (1961)
Role: Koichi Asano
HMS Defiant (1962)
Role: Captain Crawford
Lawrence of Arabia (1962)
Role: Prince Feisal
The Fall of the Roman Empire (1964)
Role: Marcus Aurelius
Doctor Zhivago (1965)
Role: Gen Yevgraf Zhivago
Situation Hopeless...But Not Serious (1965)
Role: Wilhelm Frick
Pasternak (1965) (uncredited)
Role: Himself
Hotel Paradiso (1966)
Role: Benedict Boniface
The Quiller Memorandum (1966)
Role: Pol
The Comedians (1967)
Role: Major Jones
The Comedians in Africa (1967) (uncredited)
Riole: Himself
Conversation at Night (1969) (TV)
Twelfth Night (1969) (TV)
Role: Malvolio
1970s
Scrooge (1970)
Role: Jacob Marley's Ghost
E.E. Cummings (1970) (TV)
Cromwell (1970)
Role: King Charles I
Hitler: The Last Ten Days (1973)
Role: Adolf Hitler
Brother Sun, Sister Moon (1973)
Role: Pope Innocent III
Caesar and Cleopatra (1976) (TV)
Role: Julius Caesar
Murder by Death (1976)
Role: Jamesir Bensonmum
Star Wars (1977)
Role: Ben (Obi-Wan) Kenobi
To See Such Fun (1977)
1980s
Star Wars: Episode V - The Empire Strikes Back (1980)
Role: Ben (Obi-Wan) Kenobi
Raise the Titanic (1980)
Role: John Bigalow
Little Lord Fauntleroy (1980) (TV)
Role: Earl of Dorincourt
Tinker, Tailor, Soldier, Spy (1980) (mini TV series)
Role: George Smiley
Smiley's People (1982) (mini TV series)
Role: George Smiley
Star Wars: Episode VI - Return of the Jedi (1983)
Role: Ben (Obi-Wan) Kenobi
Lovesick (1983)
Role: Sigmund Freud
A Passage to India (1984)
Role: Professor Godbole
Future Schlock (1984)
Role: Man in the White Suit
Edwin (1984) (TV)
Role: Sir Fennimore Truscott
Monsignor Quixote (1985) (TV)
Role: Father Quixote
Little Dorrit (1988)
Role: William Dorrit
A Handful of Dust (1988)
Role: Mr. Todd
1990s
Kafka (1991)
Role: The Chief Clerk
Tales from Hollywood (1992) (TV)
Role: Heinrich Mann
A Foreign Field (1993)
Role: Amos
Mute Witness (1994) (as Mystery Guest Star)
Role: The Reaper
Eskimo Day (1996) (TV)
Role: James