Distinguished-looking, urbane character actor noted for his droll humor on stage as the father of the title character in the drawing room comedy "The Reluctant Debutante" (London 1956, Broadway 1957) and the Laurence Olivier-Vivien Leigh "Caesar and Cleopatra" (1952). Often cast as genteel Englishmen whose surface manners mask a roguish or larcenous soul, Hyde-White is best known for his performances as Crippin, a British Council functionary in "The Third Man" (1949), the hypocritical headmaster in "The Browning Version" (1951) and Henry Higgins's bemused friend, Colonel Pickering, in "My Fair Lady" (1964). On TV he appeared briefly on the nighttime soap opera "Peyton Place" (1967), starred as Emerson Marshall in the legal comedy series, "The Associates" (1979) and played Dr. Goodfellow in "Buck Rogers in the 25th Century" (1981).