The Event Supplier and Services Association (ESSA) has announced that Karl Dukes, marketing director of Media Hut, has been appointed chair of the ESSA Sustainability Working Group.Dukes (pictured) said: “As a long-standing member of the cross-association sustainability working group, I’m very excited to be taking on this role, and my thanks go out to Martin Cottrell, the outgoing chair, for setting an ambitious and important direction for us.&#...