Sigourney Weaver, Nicholas Hoult, Jamie Oliver, Lolly Adefope, Coldplay

Together on Graham's sofa: Hollywood star Nicholas Hoult, starring in the remake of the classic gothic horror Nosferatu; celebrity chef Jamie Oliver, whose new cookbook is Simply Jamie; Lolly Adefope, playing set assistant Dag in the superhero-spoof series The Franchise; and supergroup Coldplay, who chat and perform their current single All My Life.