(Cover) - EN Showbiz - Colin Firth says filming The Kings Speech left him with strange pains in his arm.

The 50-year-old star has been attracting rave reviews for his portrayal of Britains King George VI in the film, winning a Golden Globe last week and heavily tipped to win an Oscar nomination. The story follows the Kings days in power as he leads his country despite having to overcome a stammer. Following intensive work with a speech therapist, King George manages to conquer the ailment.

Colin revealed that having to put on a stammer for filming did strange things to his body, often leaving him in intense pain.

I ended up with headaches after filming certain scenes. Acting with a stutter is not exactly a freeing thing. After finishing the final scene where he broadcasts the speech, I ended up with a curious pinched-nerve sensation in my left arm. After doing several takes I must have been tensing my body in a peculiar way because I came away with headaches and a numbness in my arm which has never happened to me before on a film, he told British newspaper The Sunday Express.

The Kings Speech also stars Helena Bonham Carter and Geoffrey Rush. (C) Cover Media