LONG READ: As policing globally faces significant challenges around effective responses to those in mental health crises, Western Australia Sgt Glen Blackwell, the force’s first Mental Health Co-Response Trainer, received a Churchill Fellowship award to establish diversionary practices for mentally and intellectually disabled persons engaging police; this long-read article, based on his final report to the Churchill Trust, explores international best practice, and makes recommendations for police in Australia that could also benefit other forces.