David Leigh is one of Britain's best-known investigative journalists, and the Anthony Sampson Professor in Reporting at City, University of London, UK. He was head of investigations at the Guardian for 15 years, a journalist for The Times, the Observer and The Scotsman, and the first Laurence Stern Fellow at The Washington Post. He was also a TV producer at This Week and World in Action. He has won numerous journalism awards and is the author of several books, including Wikileaks: Inside Julian Assange's War on Secrecy (2011).