phenomenon of immigrant churches and congregations that began with the arrival of the HMT Empire Windrush from the West Indies in 1948 stands as a unique trend. West Indian congregations that started from this time include the Church of God, New Testament Assembly and New Testament Church of God. Africans began to arrive in the early 1980s and established their own congregations. Foremost among these are Matthew Ashimolowo from Nigeria and his Kingsway International Christian Centre in London that may be the largest church in Western Europe. Methodism The Methodist movement traces its origin to John Wesley and the evangelical revival in the 18th century. The British Methodist Church, which has congregations throughout the nation, has around 188,000 members, and 4,110 churches (), though only around 3,000 members in 50 congregations are in Scotland. In the 1960s, the Methodist Church made ecumenical overtures to the Church of England, aimed at church unity. Formally, these failed when they were rejected by the Church of England's General Synod in 1972. However, conversations and co-operation continued, leading on 1 November 2003 to the signing of a covenant between the two churches. The Methodist Church in Ireland covers the whole of the island of Ireland, including Northern Ireland where it is the fourth-largest denomination. Other Methodist denominations in Britain include the Salvation Army, founded in 1865; the Free Methodist Church, a holiness church; and the Church of the Nazarene. Presbyterianism and Congregationalism The Church of Scotland was principally shaped by John Knox, in the Reformation of 1560, when it split from the Catholic Church and established itself as a church in the reformed tradition. The church is Calvinist Presbyterian, having no head of faith or leadership group and believing that God invited the church's adherents to worship Jesus. The annual meeting of its general assembly is chaired by the Moderator of the General Assembly of the Church of Scotland. The Church of Scotland celebrates two sacraments, Baptism and the Lord's Supper, as well as five other rites, such as Confirmation and Matrimony. The church adheres to the Bible and the Westminster Confession of Faith, and is a member of the World Communion of Reformed Churches. The Presbyterian Church of Wales seceded from the Church of England in 1811 and formally formed itself into a separate body in 1823. The Non-subscribing Presbyterian Church of Ireland has 31 congregations in Northern Ireland, with the first Presbytery