Jurgen Grotz PhD, is the Director of the Institute for Volunteering Research (IVR) at the University of East Anglia. He is Chair of the Association for Research in the Voluntary and Community Sector and trustee of the Voluntary Sector Studies Network. With over two decades of experience in applied research his largely interdisciplinary work has a consistent focus on participative approaches and public involvement, working across the academic, public and voluntary and community sectors. He has co-edited the Palgrave Handbook of Volunteering, Civic Participation, and Nonprofit Associations (2016), is co-author of Patient and Public Involvement in Health and Social Care Research: An Introduction to Theory and Practice (2020) and most recently co-edited Mobilising Voluntary Action in the UK - Learning from the Pandemic (2022).

Ruth Leonard is Chair of the UK's Association of Volunteer Managers and Head of Volunteering Development and Operations at Macmillan Cancer Support. She has been involved in volunteer management for nearly two decades and has extensive experience of providing leadership on involving volunteers and collaborating with those who seek to involve volunteers. She is committed to ensuring others are able to develop volunteer involvement skills and has written and spoken about volunteering for diverse publications and events, including chairing conferences on volunteer management and safeguarding. Ruth is regularly called on to provide her practitioner expertise and as a research consultant.