How Carole Cadwalladr exposed Facebook

Available for over a year

Carole Cadwalladr is The Observer journalist whose reporting on Cambridge Analytica triggered a crisis at Facebook. She tells Andrea Catherwood how she got the story. Also in the programme, James Harding, the former BBC Director of News, and Justine Picardie, editor of Harper's Bazaar. Presenter: Andrea Catherwood Producer: Richard Hooper.