Brendan O'Carroll, Vicky McClure, Rob Brydon, Harry Styles

Together on Graham's sofa are One Direction star Harry Styles, chatting and giving an exclusive UK television performance of his debut solo single Sign of the Times; Mrs Brown's alter-ego, Irish funnyman Brendan O'Carroll; Vicky McClure, star of police drama Line of Duty; and comedian Rob Brydon, talking about his new series with Steve Coogan, The Trip to Spain.