"an earnest, worried little man. He looked like a civil servant."

One of the Circus's chief spymasters, George Smiley, makes an appearance from time to time, shadowing Alec Leamas as he carries out his mission.  He would later become the main focus of John le Carré's writing.

Alec Guiness made the role his own in the television adaptations of Tinker Tailor Soldier Spy and Smiley's People.