He is an active researcher and has led large multi-site randomised controlled trials evaluating the effectiveness of school based CBT programmes on depression (PROMISE) and anxiety (PACES). He is interested in the use of techology to deliver interventions to children and young people has developed a computerised CBT programme (Think, Feel, Do), an app for adolescents who self-harm (BlueIce), and is part of a project exploring the use of a computerised CBT programme for children with chronic fatigue.