"No wonder sleep deprivation is a form of torture. You think you're going mad." Interview by Matthew Campbell.

Tom Bradby had everything he could have wanted. A happy childhood, a privileged education, professional success. A novelist and screenwriter, he was also a friend of Princes William and Harry and a familiar face to the nation as the presenter of ITV's News at Ten.

Until, last May, he disappeared from the screen. He had fallen seriously ill the month before. The symptoms were not physical. He feared he was going mad.

After reading the news to millions of viewers, Bradby would