Clive Marsh works at the intersection of religion and popular culture, researching how being a fan of something relates to being religious. He also serves as chairman of the Theology, Religion and Popular Culture Network and leads the Vaughan Centre for Lifelong Learning at the University of Leicester.

Matt Hills directs the Center for Participatory Culture at the University of Huddersfield in England, where he is also a professor of journalism and media. He researches fandom.

Caroline Starkey is a sociologist of religion at the University of Leeds in the United Kingdom. She studies religious practice in Great Britain, religion and gender and contemporary Buddhism.

The Most Rev. Justin Welby is the archbishop of Canterbury, head of the Church of England. He has engaged a number of social issues since being installed in this role in March 2013, including poverty, climate change and medically assisted suicide.

Mark Pickering is the chief executive officer of the Christian Medical Fellowship, which serves Christians in the field of medicine in the United Kingdom.

David Clark is a professor of medical sociology at the University of Glasgow, where he leads the Glasgow End of Life Studies Group. He is also a vice president for Hospice UK and assisted the Scottish government as it drafted its framework for palliative and end of life care.