Dr Daniel Freeman is one of the UK's leading clinical psychologists. Still only in his mid-thirties, he is a Wellcome Trust Fellow at the Institute of Psychiatry, King's College London, and a consultant clinical psychologist in the South London and Maudsley NHS Foundation Trust. In 2008 Daniel was awarded the British Psychological Society's May Davidson Prize for 'an outstanding contribution to clinical psychology'.

He publishes prolifically in leading international journals, makes regular keynote addresses at international conferences and is an Associate Editor of the British Journal of Clinical Psychology. A key figure in the latest developments in cognitive behaviour therapy, he teaches clinicians across the globe.

His work regularly brings interviews on television (e.g. BBC Breakfast, Sky News, BBC World), radio (e.g. Radio 4, Radio 5 Live, BBC Worldservice), newspapers (e.g. The Times, The Guardian, The Daily Mail) and magazines (e.g. Newsweek, Psychologies, Esquire). He is young enough to continue playing five-a-side football twice a week, but old enough to wonder for how much longer.

Jason Freeman is a writer and editor. Educated at Cambridge and Sussex universities, Jason is co-author, with Daniel Freeman, of Paranoia: The 21st Century Fear (2008) and, with Daniel Freeman and Philippa Garety, of Overcoming Paranoid and Suspicious Thoughts (2006).

He lives in Sheffield with his wife and three children. When not in front of his laptop, his time is mainly spent running round after the kids. When not running round after the kids, he enjoys the cinema, walking in the Peaks, and wondering where to begin with the garden.