Credits

• 2014 · And the Oscar Goes To... as Self (archive footage)
• 2003 · Cole Porter in Hollywood: Ça c'est l'amour as Self (Archive Footage)
• 2001 · Cleopatra: The Film That Changed Hollywood as Self (archive footage)
• 2000 · Sir John Mills' Moving Memories as Self (archive footage)
• 2000 · Julie Andrews Forever as Self (archive footage)
• 1995 · More Loverly Than Ever: The Making of 'My Fair Lady' as Self / Professor Henry Higgins (archive footage)
• 1986 · Anastasia - The Mystery of Anna as Grand Duke Cyril Romanov
• 1983 · The Kingfisher as Cecil
• 1982 · A Time To Die as Van Osten
• 1979 · The Fifth Musketeer as Colbert
• 1979 · Ashanti as Brian Walker
• 1978 · Shalimar as Sir John Locksley
• 1977 · The Prince and the Pauper as The Duke of Norfolk
• 1974 · Frank Sinatra: The Main Event as Singer (Guest Performer)
• 1974 · Rex Harrison Presents Stories of Love as Self - Host
• 1973 · The Adventures Of Don Quixote as Don Quixote
• 1971 · Platonov as Mikhail Platonov
• 1971 · V.I.P. Schaukel as Self
• 1971 · Great Performances as Captain Shotover
• 1969 · Staircase as Charles Dyer
• 1968 · A Flea In Her Ear as Victor Chandebisse / Poche
• 1968 · Phenomenal and the Treasure of Tutankamen as A man in the street (uncredited)
• 1967 · Doctor Dolittle as Dr. John Dolittle
• 1967 · The Honey Pot as Cecil Fox
• 1965 · BBC Play of the Month as Mikhail Platonov, schoolmaster
• 1965 · BBC Play of the Month as Don Quixote
• 1965 · The Agony and the Ecstasy as Papa Giulio II
• 1965 · The Car That Became a Star as The Marquess of Frinton (archiveFootage)
• 1964 · The Yellow Rolls-Royce as The Marquess of Frinton
• 1964 · My Fair Lady as Professor Henry Higgins
• 1963 · Cleopatra as Julius Caesar
• 1961 · The Happy Thieves as Jimmy Bourne
• 1960 · Midnight Lace as Anthony Preston
• 1960 · The Fabulous Fifties as Self
• 1958 · The Reluctant Debutante as Jimmy Broadbent
• 1957 · DuPont Show of the Month as Mr. Sir
• 1956 · Tony Awards as Self - Host
• 1956 · Tony Awards as Self - Recipient
• 1955 · The Constant Husband as William Egerton
• 1954 · King Richard and the Crusaders as Emir Hderim Sultan Saladin
• 1953 · Main Street to Broadway as Self
• 1953 · The Oscars as Self
• 1952 · Omnibus as
• 1952 · The Four Poster as John Edwards
• 1951 · The Long Dark Hall as Arthur Groome
• 1950 · The Colgate Comedy Hour as Self
• 1950 · Your Show of Shows as
• 1948 · Unfaithfully Yours as Sir Alfred de Carter
• 1948 · The Ed Sullivan Show as Self
• 1948 · The Ed Sullivan Show as Self (archive footage)
• 1948 · Escape as Matt Denant
• 1947 · The Foxes of Harrow as Stephen Fox
• 1947 · The Ghost and Mrs. Muir as Capt. Daniel Gregg
• 1946 · Anna and the King of Siam as King Mongkut
• 1945 · The Rake's Progress as Vivian Kenway
• 1945 · Journey Together as Guest (uncredited)
• 1945 · I Live in Grosvenor Square as Major David Bruce
• 1945 · Blithe Spirit as Charles Condomine
• 1941 · Major Barbara as Adolphus Cusins
• 1940 · Night Train to Munich as Gus Bennett
• 1940 · Ten Days in Paris as Bob Stevens
• 1939 · Over the Moon as Dr. Freddie Jarvis
• 1939 · The Silent Battle as Jacques Sauvin
• 1938 · The Citadel as Dr. Frederick Lawford
• 1938 · St. Martin's Lane as Harley Prentiss
• 1937 · School for Husbands as Leonard Drummond
• 1937 · Storm in a Teacup as Frank Burdon
• 1936 · Men Are Not Gods as Tommy Stapleton
• 1936 · All at Sea as Aubrey Bellingham
• 1930 · The School for Scandal as Man (uncredited)
• 1930 · The Great Game as George