Research findings from the EPSRC funded Retrofit 2050 project, aim to advance and explore the theoretical and practical understandings that underpin a shift to sustainability of UK’s core city regions in 2050. Utilising a participatory back-casting and scenario building process at national and regional levels, the Retrofit 2050 project has sought to envisage what a sustainable urban environment could look like based upon the systemic urban retrofitting of an existing UK city-region to 2050. Firstly, it is argued that the construction of normative sustainability oriented future scenarios and vision(s) of a desirable future(s), is fruitful in understanding and managing processes of transition and meeting the goals of environmental sustainab...