ANALYSIS: Operation Soteria has been described as a ‘game changer’ for the police investigation of rape and serious sexual offences (RASSO) in England and Wales, with the development of a new national operating model (NOM) for RASSO one of the key outcomes; in this article Professor Bernard Burnes, Dr Linda Cooper, and Dr Clare Rawdin – members of the change team for ‘Pillar 4’ (learning development and officer wellbeing) of Op Soteria – share some of the findings and insights from their work on the project.