Extracting meaningful data from clinician records is not easy – all too often they are a jumble of idiosyncratic narratives. But a £10m project has managed to do just that. Researchers at the South London and Maudsley NHS Trust and Kings College London have analysed 270,000 cases in mental health, creating what Prof Matthew Hotopf, director of the NIHR Biomedical Research Centre (BRC) at the Maudsley, claims is the world’s largest clinical dataset for mental illness. The Maudsley team are now looking for industry partners.