A charismatic and high-ranking member of the Circus, renowned for his cultural flair and artistic persona, and deeply entwined in a complex web of relationships.

An ambitious leader at the Circus after the failure of a key operation, skilled in political maneuvering but less adept at the practical aspects of intelligence.

A prominent operative responsible for overseeing surveillance operations, whose foreign origin and flamboyant demeanor set him apart in the mostly British establishment.

A key figure in the Circus with a history of strong political views, who has become disillusioned and disconnected from political ideals through his work.

The former head of the Circus, known for his secretive and autonomy-favoring style, whose health and career decline as he obsesses over the possibility of a mole.

A dedicated and loyal deputy to Smiley, running the more physical aspects of operations, whose trust in Smiley drives him to assist in crucial investigations.

A high-ranking civil servant acting as a liaison between the government and intelligence services, who facilitates Smiley’s investigation into internal corruption.

A brave and solitary former operative who suffered greatly due to an operation gone wrong, leading to a deep personal and professional reassessment.

A solitary schoolboy who befriends a new teacher, forging a connection that reflects his own loneliness and search for understanding.

The estranged wife of George Smiley, whose relationships often lead to complex personal and professional challenges for those around her.

A field agent known for his devotion to Smiley and his emotional nature, involving himself deeply in attempts to reveal internal espionage activities.