The film , starring Gary Oldman as George Smiley , along with Colin Firth , Tom Hardy , John Hurt , Toby Jones , Mark Strong , Benedict Cumberbatch , and Ciarán Hinds , is set in London in the early 1970s and follows the hunt for a Soviet double agent at the top of the British secret service .
The film `` Tinker Tailor Soldier Spy '' stars Brad Pitt .