To support policymakers and practitioners to understand the role of building design in mitigating overheating risk and improving energy efficiency, researchers from the University of Cambridge (UK) and University of Loughborough (UK) analysed building adaptations, to mitigate overheating risk, for  NHS hospitals built in the 1960s. The aim of the analysis was to find out which, if any, of five building adaptations would be successful in maintaining the indoor temperature of Addenbrooke Hospital, Cambridge, at a thermally comfortable level – below 28^oC for 95% of occupied hours (CIBSE, 2006). The analysis also considered the implications of each proposed adaptation for energy consumption and carbon emissions. Each of the five building adaptations were tested against expected future temperature increases up to the year 2080.