The Anglican Communion has no official legal existence nor any governing structure that might exercise authority over the member churches. There is an Anglican Communion Office in London, under the aegis of the
archbishop of Canterbury, but it serves only in a supporting and organisational role. The communion is held together by a shared history, expressed in its
ecclesiology,
polity and
ethos, and also by participation in international consultative bodies. Three elements have been important in holding the communion together: first, the shared ecclesial structure of the component churches, manifested in an
episcopal polity maintained through the
apostolic succession of bishops and
synodical government; second, the principle of belief expressed in worship, investing importance in approved prayer books and their rubrics; and third, the historical documents and the writings of early Anglican
divines that have influenced the ethos of the communion. Originally, the Church of England was self-contained and relied for its unity and identity on its own history, its traditional legal and episcopal structure, and its status as an
established church of the state. As such, Anglicanism was from the outset a movement with an explicitly episcopal polity, a characteristic that has been vital in maintaining the unity of the communion by conveying the episcopate's role in manifesting visible catholicity and ecumenism. Early in its development following the
English Reformation, Anglicanism developed a vernacular prayer book, called the
Book of Common Prayer. Unlike other traditions, Anglicanism has never been governed by a
magisterium nor by appeal to one founding theologian, nor by an extra-credal summary of doctrine (such as the
Westminster Confession of the
Presbyterian churches). Instead, Anglicans have typically appealed to the
Book of Common Prayer (1662) and its offshoots as a guide to Anglican theology and practise. This has had the effect of inculcating in Anglican identity and confession the principle of ("the law of praying [is] the law of believing"). Protracted conflict through the 17th century, with radical Protestants on the one hand and Roman Catholics who recognised the primacy of the Pope on the other, resulted in an association of churches that was both deliberately vague about doctrinal principles, yet bold in developing parameters of acceptable deviation. These parameters were most clearly articulated in the various rubrics of the successive prayer books, as well as the
Thirty-nine Articles of Religion (1563). These articles have historically shaped and continue to direct the ethos of the communion, an ethos reinforced by its interpretation and expansion by such influential early theologians such as
Richard Hooker,
Lancelot Andrewes and
John Cosin. With the expansion of the
British Empire and the growth of Anglicanism outside Great Britain and Ireland, the communion sought to establish new vehicles of unity. The first major expressions of this were the
Lambeth Conferences of the communion's bishops, first convened in 1867 by
Charles Longley, the archbishop of Canterbury. From the beginning, these were not intended to displace the autonomy of the emerging provinces of the communion, but to "discuss matters of practical interest, and pronounce what we deem expedient in resolutions which may serve as safe guides to future action".
Chicago Lambeth Quadrilateral One of the enduringly influential early resolutions of the conference was the so-called
Chicago-Lambeth Quadrilateral of 1888. Its intent was to provide the basis for discussions of reunion with the Roman Catholic and Orthodox churches, but it had the ancillary effect of establishing parameters of Anglican identity. It establishes four principles with these words:
Instruments of communion The archbishop of Canterbury's role is strictly symbolic and unifying, while the communion's three international bodies are consultative and collaborative; their resolutions have no legal effect on the autonomous provinces of the communion. However, in combination those four bodies do function as "instruments of communion", because all churches of the communion participate in them. In order of antiquity, they are: (the episcopal throne in
Canterbury Cathedral, Kent), seat of the archbishop of Canterbury in their role as head of the Anglican Communion • The
archbishop of Canterbury functions as the spiritual head of the communion. The archbishop is the focus of unity, because no Anglican church has historically claimed membership in the communion without being in communion with the archbishop of Canterbury. The current archbishop-designate is
Sarah Mullally. • The
Lambeth Conference (first held in 1867) is the oldest Anglican international consultative body. It is a forum for bishops of the communion to reinforce unity and collegiality, to discuss matters of mutual concern, and to pass resolutions intended to act as guidelines to the individual churches. It is held roughly every ten years and invitation is by the archbishop of Canterbury. • The
Anglican Consultative Council Because there is no binding authority in the Anglican Communion, these international bodies are vehicles for consultation and persuasion. In the late twentieth and early twenty-first centuries, they have debated issues of conformity in doctrine, discipline, worship and ethics. The most controversial issues have related to
gender and
sexuality: some provinces of the communion (particularly in Africa and Asia) object to the changing acceptance of LGBTQ+ individuals (particularly by the North American and European churches). This has led to disagreements on the churches' differing practices of
blessing same-sex unions, ordaining and consecrating priests and bishops who are (or have been) in
same-sex relationships, and to the process by which changes were undertaken. Some churches have also objected to the
ordination of female priests and bishops. This debate is known as the
Anglican realignment. Those who objected condemned these changes as unscriptural, unilateral, and lacking prior agreement from the communion. The
American Episcopal Church and the
Anglican Church of Canada responded that their actions had been undertaken after lengthy scriptural and theological reflection, were legal according to their own
canons and constitutions, and made after extensive consultation with the provinces of the communion. The Primates' Meeting voted to request those two churches withdraw their delegates from the 2005 meeting of the Anglican Consultative Council. Canada and the United States decided to attend the meeting but without exercising their right to vote. They were not expelled or suspended; there is no mechanism in this voluntary association to suspend or expel an independent province of the communion. Because membership is based on a province's communion with Canterbury, expulsion would require the archbishop of Canterbury's refusal to be in communion with the affected jurisdictions. Following the recommendation of the
Windsor Report,
Rowan Williams (the then archbishop of Canterbury) established a working group to examine the feasibility of an Anglican covenant which would articulate the conditions for communion in some fashion.
Nairobi-Cairo proposals In 2025, the Inter-Anglican Standing Committee on Unity, Faith and Order within the Anglican Communion proposed a series of changes to the Instruments of Communion that would result "in service of a de-centred, polycentric understanding of the mission of the Church. . . The leadership of the Communion should look like the Communion," according to the report. The Nairobi-Cairo proposals suggests amending the definition of membership in the Anglican Communion to no longer include reference to being in full communion with the Archbishop of Canterbury; instead, the reference to Canterbury would be a historical connection. Additionally, there would be a rotating presidency of the Anglican Consultative Council among the five regions of the communion, and the role of calling the Lambeth Conference and Primates' Meeting, traditionally held by the Archbishop of Canterbury, would include greater input from the Primates' Standing Committee. This has both been described as an effort to further decolonize the structures of the Anglican Communion as well as an effort to hold together autonomous member churches with disagreements. ==Organisation==