His 2006 book "7-7 The London Bombs – What Went Wrong?" examines the intelligence and other failures leading up to the 7 July 2005 bombings in London. On that subject, he has commented "MI5 director general Jonathan Evans's persistent unwillingness to accept that his agency could have thwarted the 7/7 bombers if they had been more on the ball shows the petulance of a losing football manager".