The AbsoluteRadio Network saw digital listening reach an all time high, with an audience of 2.28 million listeners - the largest digital audience of any commercial station over the past three months, and an increase of 1% on last year's figures.
"I do fear we're not really appreciating the absolute horror of what someone's going through there, " he told the Radio Times, describing the conversion of Lewis's character into a clandestine al Queda operative as "almost like titillation".