Stephen Pilling is Professor of Clinical Psychology and Head of the Department of Clinical, Education and Health Psychology at University College London. He has considerable expertise in evidence-based medicine and is a Director of the National Collaborating Centre for Mental Health which produced over 30 clinical mental health guidelines for NICE and is now focused on policy implementation. He continues to work on NICE guideline development in his role as a clinical advisor to NICE. He has also supported the development and implementation of clinical guidelines in a wide range of national and international health care systems.  He has served in a number of advisory roles to the English NHS, including the NHS Talking Therapies for Anxiety and Depression programme, the development of a National Mental Health Research programme and on the development of the Community Mental Health Framework. He has been a principal investigator on a number of RCTs of complex interventions in mental health in the areas of depression, substance misuse and crisis care funded by the MRC and NIHR. In addition to the evaluation of complex interventions and systematic reviews, his research group at UCL has an interest in the analysis of large health care data sets.The Department is the also leading provider of post-graduate training programmes in psychological interventions in Europe and has played a central role in the development of new professional roles in NHS mental health services. He holds an honorary clinical appointment with Camden and Islington Foundation Trust.