Vladimir Ashurkov, member of the Central Council of Progress Party

Heidi Blake, investigations editor, BuzzFeed UK

Matt McAllester, editor, Newsweek International

Heather Brooke, investigative journalist, author and Professor of journalism at City University

Melanie Bunce, senior lecturer in Journalism, City University, co-editor of Africa's Media Image in the 21st Century

Lucy Küng, Research Associate, Reuters Institute

Vincent Ni, senior producer, BBC World Service, and former foreign correspondent for Caixin Media

Rachel Oldroyd, managing editor, The Bureau of Investigative Journalism

Americo Martins, editor, Global Editorial Partnerships, BBC, and former director general of Brazil's public broadcasting company

Melissa Bell, Vox Media

Andrew Dorman, Professor of International Security, Kings College, Stephen Grey, Security Correspondent and author Sir David Omand, former head of GCHQ