What is the single largest church in the most religious part of the UK?
Christianity in Ireland Christianity is and has been the largest religion in Ireland. Most Christian churches are organized on an all-Ireland basis, including both the Republic of Ireland and Northern Ireland. In the Republic of Ireland, 84.2% of the population adheres to the Catholic Church. In Northern Ireland, the various branches of Protestantism collectively form a majority of the population but the single largest church is the Catholic Church which accounts for some 40.8% of the population.
Anglican Communion The Anglican Communion is an international association of autonomous churches consisting of the Church of England and national and regional Anglican churches ("provinces") in full communion with it. Full participation in the sacramental life of each church is available to all communicant Anglicans.