The opening credits show a set of Russian matryoshka dolls. One doll opens up to reveal a doll more irate than the other one, and the final doll is seen as being faceless. This was inspired by a line at the end of the "Tinker, Tailor, Soldier, Spy" novel: "Smiley settled on a picture of one of those little Russian dolls that open up to reveal one inside the other, and another inside him. Of all men living, only Karla had seen the last little doll inside..."
In the closing credits, the church prayer "Nunc dimittis" is played. This prayer describes Simeon's wish to depart this world after having witnessed the newborn Messiah. In context, this theme is used to bid farewell to the viewer.