The aim of this study was to examine the barriers and opportunities in the retrofitting of sustainable urban drainage systems (SuDS) to appraise their effectiveness in the mitigation of flood risk. The study has investigated the feasibility of the implementation of SUDS. Specifically, it has examined a range of multiple benefits from retrofitting SuDS such as: the enhancement of air quality; and the identification of a number of potential barriers, including the lack of trust in such systems. However, the study suggests that further research is required to identify the monetary and non-monetary benefits of SuDS as part of an integrated approach of flood risk management.