Tim Grass is the society’s Assistant Editor, and a Senior Research Fellow at Spurgeon’s College, London. His PhD (King’s College, London, 1997) examined the ecclesiology of the Brethren and the Catholic Apostolic Church in historical context. He has continued to write on modern British Nonconformity, and also on ecumenical dialogue involving the Eastern churches. Among his books are SCM Core Text: Modern Church History (2008), The Lord’s Watchman: A Life of Edward Irving (2011), F. F. Bruce: A Life (2011), and Two Centuries of Baptists in Guernsey (2013). Currently he is working on a book about the history of the Catholic Apostolic Church, and a biography of a Brethren missionary to Spain, E. H. Trenchard. He is a Fellow of the Royal Historical Society, and lives on the Isle of Man.