"We are working on another one. [Producer] Tim Bevan is putting it together as we speak with [screenwriter] Peter Straughan and Tomas Alfredson, so yes it's in development. It did unbelievably well and it didn't cost hardly anything. But things take time. Tim is passionate about making sure we do another one."
Tinker, Tailor, Soldier, Spy was adapted from the John le Carré novel of the same name. The author also wrote the follow-up novel Smiley's People, which follows George Smiley coming out of retirement for another mission. No story details were given for the sequel, although it remains possible they may be adapting the follow-up from this book. Gary Oldman was nominated for an Academy Award for his portrayal of George Smiley in Tinker, Tailor, Soldier, Spy.
Tinker, Tailor, Soldier, Spy was released December 9th, 2011 and stars Mark Strong, John Hurt, Zoltán Mucsi, Péter Kálloy Molnár, Ilona Kassai, Imre Csuja, Gary Oldman, Toby Jones. The film is directed by Tomas Alfredson.