Most of his career has been in television. He has worked for over fifty years in television both in the United States and the United Kingdom. His first appearances were in British television in "Our Mutual Friend" (1958), "The Eustace Diamonds" (1959), "BBC Sunday-Night Theatre" (1959) and "BBC Sunday-Night Play" (1960). In 1964, he played the role of Illya Kuryakin in the American TV series "The Man from U.N.C.L.E.". McCallum played the character for 114 episodes. For this series McCallum was nominated for two Emmy Awards and two Golden Globes. David McCallum also had success in British series "Colditz" (1972-1974), and "Sapphire &amp; Steel" (1979-1982). 