Anushka Asthana is joined by Carole Cadwalladr, Alex Hern, Steve Howell and Damian Collins MP to discuss the scandal surrounding Cambridge Analytica’s use of data harvested from Facebook in Donald Trump’s election campaign. Plus: Heather Stewart in Brussels on the Brexit transition deal and the continuing response to Russia

It’s a complex story that the Guardian and Observer have been covering since 2015. A data analytics firm that worked on the winning election campaign of Donald Trump was involved in one of Facebook’s biggest ever data breaches.

Joining Anushka Asthana to discuss it all are the Observer’s Carole Cadwalladr – who has been working on this story for the past three years; the Guardian’s tech reporter Alex Hern and Steve Howell, an ex-Labour adviser who was heavily involved in Jeremy Corbyn’s election campaign in 2017.

Plus we hear from whistleblower Christopher Wylie and the chair of the parliamentary committee investigating the affair, Damian Collins MP.

Also this week: Heather Stewart has joined the prime minister’s trip to Brussels for the European council meeting where heads of government will discuss the combined response to Russia and the Brexit transition deal.