Richard Norton-Taylor is a former security and defence editor at the Guardian. His books include In Defence of the Realm? The case for Accountable Security and Intelligence Services, Truth is A Difficult Concept: Inside the Scott Inquiry. He has written a number of award- winning plays, including Half the Picture, The Colour of Justice, Justifying War, Bloody Sunday, which won an Olivier theatre award, Called to Account, and Chilcot. He is on the board of Liberty, the National Council for Civil Liberties. He has twice won Freedom of Information Campaign awards.