Dr David Lee is a highly acclaimed trainer with over 20 years of experience teaching in academia and helping those with complex sleep problems. As well as educating health care professionals across the public and private sectors in Cognitive Behavioural Therapy for Insomnia (the NICE recommended approach to assess and treat insomnia disorder) he is also an expert witness and works predominantly with people who have chronic conditions or sustained life changing injuries. He is author of ‘Teaching the World to Sleep’, 2017, Routledge, London.