in january 2014, campbell announced that he was joining "british gq" with a brief to conduct interviews with figures from "politics... sport, business, culture, (and) other aspects of life that i find interesting", succeeding piers morgan. in his role at "gq" campbell has interviewed a wide range of people, including mario balotelli, mo farah and usain bolt from the world of sport and tony blair, sadiq khan, nicola sturgeon, george osborne and chuka umunna from the world of politics, as well as conducting in depth interviews with many other figures from public life, including rachel riley. in 2017, he conducted an unprecedented interview with prince william where the two spoke candidly on the subject of mental health and the prince's late mother princess diana. in march 2017, "gq" began to film the interviews to use as part of their digital platform, beginning with an interview with owen jones, and then tony blair, both of which had tens of thousands of views within days. campbell later wrote that he had the idea of asking prince william if he could conduct an interview when the princes heads together charity had asked campbell and his partner fiona millar to make a short film together about how they dealt with campbell's mental health problems. when jeremy corbyn was interviewed for the magazine in late 2017, he did so on the condition that campbell would not be the interviewer.