One of the challenges around Responsible Investment is the differing views around its purpose, methods and value. The Investment Leaders Group (ILG) of the Cambridge Institute for Sustainable Leadership – of which Aon is a member – has sought to define this as part of its core mission to help shift the investment chain towards a more sustainable and responsible investment process. This paper explores those definitions and explores and examines how ESG risks will be significant drivers of future risk and return – and, the subsequent implications for investment decisions.