Ahead of World Press Freedom Day on 3 May 2010, BBC Global News at Bush House explored the central issues of press freedom: the threats faced by journalists, state control and censorship and the impact of new media.
Roy Greenslade, former UK newspaper editor, media commentator and professor of journalism at City University, London.
Mazyar Bahari, Iranian-Canadian journalist who was imprisoned for 118 days in Iran following the disputed presidential election in June 2009.
Dr Agnes Callamard, executive director of Article 19, a human rights organisation that focuses on the defence of freedom of expression and freedom of information worldwide.
Ros Atkins, presenter on World Have Your Say, chaired the discussion.
This event was part of the BBC Global News Creative Network.