The "Gandhi" star said he was stunned at just how hard his fellow actor worked for his character of Admiral General Hafez Aladeen while shooting his latest movie, reported Showbiz spy.
"Sacha really is a genius when it comes to comedy. But it does take a huge amount of effort and concentration to make these characters work. He would work with four hours sleep some nights. We would wrap and have our adult beverage.
"Or not! And Sacha would then be working with the writers for three hours, for the next day's shooting. But he would be as fresh, and as open and as welcoming the next day, as he was before," Kingsley said.