apostolic succession, but does not recognize their ordinations of women to the priesthood begun in the 1970s. The Old Catholic Churches consider themselves to be in full communion with the Anglican Communion. The Polish National Catholic Church ceased intercommunion with both the Anglican Communion in 1978 and the Union of Utrecht member churches in 1996, disagreeing over the issue of female ordination. It has since become closer to Rome, which recognizes it to have a similar status as the Orthodox Churches. Reformed Churches (Continental Reformed, Presbyterian, and Congregationalist) In 2010, the Catholic Church and the Reformed Churches ratified the Common Agreement on Mutual Recognition of Baptism. As such, both the Catholic Church and the Reformed Churches recognize the validity of baptism performed in each of these denominations. Practical ecumenism and church attendance In many areas of the United Kingdom where there is only one Christian church (such as Anglican, Baptist, Methodist or United Reformed), it may "extend a Declaration of Ecumenical Welcome and Commitment to Christians of other denominations inviting them to be part of the life and witness of that worshipping congregation." The following guidelines were offered by the Catholic Bishops' Conference of England and Wales for the faithful: Roman Catholic Archbishop John Bathersby and Anglican Bishop David Beetge, who chair the International Anglican–Roman Catholic Commission for Unity and Mission, encouraged Protestants and Catholics to attend one another's services, although not receiving Holy Communion at them, as delineated in Growing Together in Unity and Mission: Pope Francis said that in northern Argentina, the Anglican bishop and Roman Catholic bishop, both of whom are friends, work together to teach at Christian missions with the aborigines. With the Congregation for the Doctrine of the Faith having knowledge of this, both Anglicans and Roman Catholics attend each other's Masses, engaging "in charity together". Praising this ecumenism, Pope Francis declared that "I think this is a richness that our young Churches can bring to Europe and to the Churches that have a great tradition." Pope Francis recalled his own friendship with the Anglicans of Buenos Aires, given that the Anglican Cathedral of St. John the Baptist was juxtaposed with the Roman Catholic parish of Merced. Major documents Council documents 1274 Second Council of Lyon, Session IV: Declaration of Union with the Greek Churches 1439 Council of Basle-Ferrara-Florence, Laetentur Caeli: Bull of Union with the Greeks 1964 Second Vatican Council, Lumen gentium: Dogmatic Constitution