The Guardian investigative journalist Nick Davies broke the phone hacking scandal that had been covered up for years by Rupert Murdoch's News International, and his work saw the Guardian, alongside The New York Times, become the main news agency to publish excerpts from thousands of classified documents from US military servers.
The cables were leaked by Bradley Manning, who was last month given a 35-year jail term for passing the files to WikiLeaks
Nick Davies talks to Kathryn Ryan.
