In the last five years in the UK, more than 100 children have died from knife wounds. But violence isn't inevitable and evidence shows that we need more mentoring, therapy, family support and police in the areas where violence is high. So why don't we do what works? Jon Yates from the Youth Endowment Fund looks at the schemes that have successfully reduced knife crime. He investigates why the lessons they've taught us haven’t been scaled up. And why we’re spending money on other things like knife awareness campaigns without any evidence they work. Presenter: Jon Yates Producer: Rob Walker Editor: Clare Fordham Sound Engineer: Richard Hannaford Production Coordinator: Maria Ogundele Contributors: Karyn McCluskey, Chief Executive, Community Justice Scotland Karen Timoney, Director, KDT Wellness Graeme Armstrong, author of The Young Team Laura Knight, Toolkit and Evidence Engagement Lead, Youth Endowment Fund Gavin Stephens, Chair, National Police Chiefs’ Council Lawrence Sherman, Chief Scientific Officer, Metropolitan Police Jhemar Jonas, youth worker and musician Ciaran Thapar, youth worker and author of Cut Short Thomas Abt, Founding Director, Center for the Study and Practise of Violence Reduction at the University of Maryland; author of Bleeding Out Sajid Javid, Conservative MP for Bromsgrove, former Home Secretary Luke Billingham, youth worker and researcher Jahnine Davis, Director, Listen Up