James Edward Lesslie Newbigin was a British theologian, missiologist, missionary and author. Though originally ordained within the Church of Scotland, Newbigin spent much of his career serving as a missionary in India and became affiliated with the Church of South India and the United Reformed Church, becoming one of the Church of South India's first bishops. A prolific author who wrote on a wide range of theological topics, Newbigin is best known for his contributions to missiology and ecclesiology. He is also known for his involvement in both the dialogue regarding ecumenism and the Gospel and Our Culture movement. Many scholars also believe his work laid the foundations for the contemporary missional church movement, and it is said his stature and range is comparable to the "Fathers of the Church".

The United Reformed Church (URC) is a Protestant Christian church in the United Kingdom. As of 2022 it had approximately 37,000 members in 1,284 congregations with 334 stipendiary ministers.