How did we end up with the social security system we have? How can we make out social security system better? We speak to Alison Garnham, CEO of Child Poverty Action Group (CPAG) about social security. Alison has spent many years working as a welfare rights adviser, been a senior lecturer in social policy at the University of North London and has headed up CPAG since 2010 making her ideally placed to take the long view on all things social security.