Gary Oldman has given an insight into what film fans can expect from Tinker, Tailor, Soldier, Spy.
"It's quintessentially British and very faithful to the book, but it's not like the TV series," the actor explained at the Hollywood premiere of his new movie Red Riding Hood.
Gary, who plays George Smiley in the big screen adaptation, revealed the movie won't be like the classic 1979 TV mini-series which starred Sir Alec Guinness, but has been given the seal of approval by the spy novel's original author.
"It's an original screenplay that John le Carre loved and signed off on so it got his blessing," Gary said.
The 52-year-old film star raved about working under the direction of Let The Right One In filmmaker Tomas Alfredson.
"I'm very proud to have been involved with it," he said. "A great director and a great cast and a really great piece of material. You know, it's rare."
Oscar winner Colin Firth will star alongside Gary, along with some of Britain's best actors, including Tom Hardy, Ciaran Hinds, Benedict Cumberbatch, Mark Strong and Kathy Burke.