In 1928, he began to play the roles of the Defendant in Trial by Jury and Francesco in The Gondoliers.
Pinafore Frederic in The Pirates of Penzance, the Duke of Dunstable in Patience, Richard Dauntless in Ruddigore, Colonel Fairfax in Yeomen, and Marco in The Gondoliers.
[1] Dean performed many of his roles in D'Oyly Carte's American tours in 1934, 1936 and 1939.
[2] Dean left the D'Oyly Carte organisation in 1946 and was replaced by the returning Leonard Osborn and Thomas Round.
He appeared in The Gondoliers in Australia in 1949 with the J. C. Williamson Gilbert and Sullivan Opera Company.