Businesses are increasingly seeking opportunities to reduce the emissions intensity of their supply chains in order to achieve net zero targets. At the same time, governments are exploring a range of domestic and international policy options for accelerating the transition to a more sustainable economy – particularly in the lead up to COP26 in Glasgow. Our panel explored some of the barriers faced by businesses seeking to reduce their greenhouse gas emissions, and the role that international trade and regulatory policy can play in alleviating these barriers.