In this slideshow, Alan Thompson, Benefits Realisation Manager and Chris Morris, Information Analyst at Central Southern Commissioning Support Unit, give an outline of their work regarding risk stratification at Central Southern CSU , identifying four mail roles for stratification and describing how they developed new models of predicting risk with the Adjusted Clinical Groups (ACG) system. Alan Thompson and Chris Morris spoke at the Nuffield Trust event: The future of the hospital, in June 2014.