The former Cambridge Analytica executive Alexander Nix has pulled out of an appearance at the largest advertising industry conference in the world following criticism.

Nix was due to be interviewed on stage Thursday at the Cannes Lions International Festival of Creativity in France by Gillian Tett, the Financial Times' editorial board chair and editor at large, U.S. The interview was billed as his first speaking appearance since Cambridge Analytica went into administration after allegedly harvesting Facebook user data to try to influence the outcome of the 2016 U.S. presidential election campaign and the Brexit vote.