Graham Stuart Harrison was first and foremost a powerful preacher and faithful pastor.
He became minister of Alma Street Baptist Chapel, Newport in 1962 — re-named Emmanuel Evangelical Church in 1977 when a new building was erected — and laboured indefatigably there until his retirement in 2010.
He was devoted to the flock of God. His many and varied gifts, however, equipped him for wider ministry in God’s kingdom. He was heavily involved in the work of the Evangelical Movement of Wales (EMW), serving for many years as chair of the editorial board of its English language magazine and as one of the editors of Christian Hymns. In 1972 he became the first principal and lecturer in systematic theology on its Theological Training Course, in which capacity he trained scores of men for gospel ministry. Five years later he became the first lecturer in systematics at the newly formed London Theological Seminary.