During the Credits
There are no extras during the credits of Tinker Tailor Soldier Spy. The only thing of note is that the credits begin aligned on the right side of the screen before gradually moving across to the left, and then back again. This continues for the duration of the credits, as opposed to them being aligned in the center.
After the Credits
There are no extras or stingers after the credits of Tinker Tailor Soldier Spy.
Special thanks to Adrian M for the stinger submission!