Elaine Kerr, Deputy Director of International Synergies Northern Ireland talks about industrial symbiosis and how it ‘oils the wheels’ of the circular economy. Elaine explains what industrial symbiosis is, and how International Synergies provides research and facilitation for ‘resource matching’, helping organisations of all types and sizes. We discuss the multiple benefits of industrial symbiosis: reducing waste and pollution (and associated costs); creating valuable new by-products, jobs, and social value; together with securing access to future resources by setting up local ‘ecosystems’ for materials. Creating new, local feedstocks from redundant resources can also bring widespread benefits for the local economy, helping improve economic prosperity and resilience. We talk about changing attitudes and the ways young entrepreneurs and social enterprises are creating value from what we used to think of as ‘waste’.