On 27 and 28 September 2018, the Western Cape Government (WCG) and the Organisation for Economic Co-operation and Development (OECD) hosted 250 behavioural practitioners and policymakers from 21 countries who represented national and sub-national governments, regulators, NGOs, academia, private sector and multi-national bodies at the Behavioural Insights Conference Making a Real Difference: Nudging for Policy Change.