Surging UK Green Party Calls for Formal Church-State Separation

In March 2026, the Green Party of England and Wales confirmed what had been circulating as rumour for months: the party's official policy platform now includes the disestablishment of the Church of England [1]. Under the proposal, bishops would lose their automatic seats in the House of Lords, the Prime Minister would no longer play a role in appointing the Archbishop of Canterbury, and the Church of England would become a self-governing institution with no formal connection to the state [2].

The announcement landed in a country where, for the first time in recorded history, fewer than half of residents identify as Christian [3]. It also came from a party that has never held more than a handful of Westminster seats — but whose recent electoral trajectory has given it a platform it has never previously enjoyed.

The Green Surge: From Fringe to Fourth Party

The 2024 general election was the Green Party's best ever. The party won four seats — Bristol Central, Brighton Pavilion, Waveney Valley, and North Herefordshire — with 1.9 million votes and a 6.8% national vote share [4]. That represented a near-tripling from the 2.7% the party received in 2019, and its highest share since the party's founding [5].

Source: House of Commons Library

Data as of Jul 5, 2024CSV

The gains were not limited to Westminster. In the May 2024 local elections, the Greens gained 74 council seats across England, bringing their total to 812 — another record [4]. Membership growth has been strongest in London and the Northeast of England, and the party's conference in Bournemouth in October 2025 drew record attendance [6].

Under leader Zack Polanski, the party has positioned itself as an alternative to Labour on the left, pitching what Polanski calls support for the "caring majority" [7]. The disestablishment proposal sits within a broader constitutional reform agenda that also includes House of Lords reform and proportional representation.

The demographic underpinnings of the Green surge align with the disestablishment push. The party draws disproportionately from younger, urban, university-educated voters — the same cohort in which identification with "no religion" is highest. According to Humanists UK's analysis of the 2021 Census, among those under 67, more people identified as non-religious than as Christian [8].

What Establishment Actually Means

The Church of England's relationship with the state is not a single arrangement but a dense web of constitutional, legislative, and institutional connections built up since Henry VIII's 1534 Act of Supremacy [9]. The Green Party's proposal targets several of these, but the full picture is more complex than any single policy document captures.

The Lords Spiritual. Twenty-six Church of England bishops sit in the House of Lords by right — the Archbishops of Canterbury and York, the Bishops of London, Durham, and Winchester, and 21 others ranked by seniority of consecration [10]. They can speak in debates, vote on legislation, table questions, serve on committees, and lead the opening prayers at each sitting day. The UK is the only democracy other than Iran that reserves legislative seats for clerics [11]. In early 2025, Harriet Harman introduced an amendment to remove the bishops' automatic seats, and in March 2025, peers voted against a separate proposal to reduce their number from 26 to five [10].

The Supreme Governor. The reigning monarch holds the title of Supreme Governor of the Church of England, a role inseparable from the Coronation Oath. King Charles III swore at his 2023 coronation to "maintain and preserve inviolably the settlement of the Church of England" [12]. Legal scholars have debated whether Parliament can unilaterally disestablish the Church without also legislating changes to the monarchy — a constitutional entanglement with no simple resolution. However, precedent exists: Queen Victoria approved the disestablishment of the Church of Ireland in 1869 despite having sworn to maintain the "united church of England and Ireland" [12].

The Prime Minister and Appointments. The Prime Minister currently plays a formal role in the appointment of the Archbishop of Canterbury and other senior bishops, selecting from a shortlist provided by the Crown Nominations Commission [9]. The Green Party proposal would end this.

Church of England Schools. The Church of England is the largest provider of academies in England, operating approximately 1,540 academies through 280 Multi Academy Trusts, plus 1,620 Voluntary Controlled schools [13]. Church of England schools account for 26% of all state primary schools and 6% of all state secondary schools [13]. The fate of these roughly 3,160 schools — and their approximately one million pupils — under disestablishment is among the least-addressed aspects of the proposal.

A Nation That No Longer Identifies as Christian

The 2021 Census recorded a demographic shift that gives the Green Party's proposal its statistical foundation.

Source: ONS Census 2021

Data as of Nov 27, 2023CSV

Christians fell to 46.2% of the population of England and Wales, down from 59.3% in 2011 and 71.7% in 2001 — a drop of more than 25 percentage points in two decades [3]. "No religion" rose to 37.2%, up from 25.2% in 2011 [3]. The Muslim population grew to 6.5% (3.9 million), Hindus to 1.7% (1 million), and Sikhs to 0.9% [3]. In Scotland's 2022 census, those with no religion reached 51%, making it a majority for the first time [14].

Source: ONS Census

Data as of Nov 27, 2023CSV

A February 2025 YouGov survey found that 50% of Britons want to see the Church of England disestablished, versus 23% who want the church-state connection maintained [15]. Separately, 61% said bishops should lose their automatic House of Lords seats [15]. Only 25% of the public held a favourable view of the Church of England [16].

These numbers, however, mask a divide among religious communities that complicates the Green Party's framing.

The Paradox: Why Some Minority Faith Groups Defend Establishment

The Green Party argues disestablishment would "reflect Britain's diverse communities" [1]. But several prominent minority faith leaders have taken the opposite position: that establishment of the Church of England provides a protective framework for all religions.

Leaders from the Muslim Council of Britain have suggested that, given Islam's growth in the UK, Muslims should receive a share of the Church's privileged status rather than see it abolished — viewing the established church as a guarantor that religion has a seat at the table of governance [17]. During a 2014 debate over whether Britain is a "Christian country," the then-Archbishop of Canterbury pointed to support from Muslim, Hindu, and Sikh leaders for the characterization [18].

The argument has a structural dimension. The 26 Lords Spiritual are the only guaranteed religious voices in Parliament. Remove them, and no religious community has a right to legislative representation. For minority faiths that lack the institutional infrastructure to secure political influence through other channels, an established church that advocates broadly for religious interests may be preferable to a secular vacuum.

This is not a unanimous view. The National Secular Society, which has campaigned for disestablishment since its founding in 1866, argues that privileging one denomination inherently disadvantages all others [11]. But the disagreement within and between religious communities means the Green Party cannot straightforwardly claim minority faith support for its position.

The Faith Schools Question

Of the UK's approximately 24,000 state-funded schools, around 6,900 are faith schools [19]. The Church of England alone operates roughly 3,160 of these, making it by far the largest faith-based school provider [13].

Church of England schools perform slightly better than non-faith state schools on key metrics — 83% of pupils reached expected standards in reading, writing, and maths at Key Stage 2, compared to 81% in non-faith schools [13]. However, research from the London School of Economics has attributed much of this gap to intake differences: Church of England schools have a lower proportion of pupils eligible for free school meals and a higher proportion with high prior attainment [20]. Admissions policies vary by school and are set locally, not nationally, though many Church of England schools do not apply faith-based admissions criteria [13].

Disestablishment would not automatically alter these schools' legal status — they would remain state-funded — but it could change the governance framework and the Church's role in curriculum decisions, particularly around religious education. The details of this transition have not been specified in the Green Party's proposal, leaving a significant gap for a policy that would directly affect roughly one million pupils and tens of thousands of staff.

Lessons from Sweden and France

Two major precedents for church-state separation offer mixed evidence for the Green Party's case.

Sweden (2000). The Church of Sweden ceased to be the state church on 1 January 2000, after a process that began in earnest in the 1990s [21]. The separation was not total: the Church of Sweden remains the "national church" and is still regulated by a specific law. Membership transitioned from automatic (via citizenship) to baptism-based, and parish councils gained independence from Crown oversight [21]. Approximately 57% of Swedes remained members as of 2020, though regular attendance had fallen to around 2% [22]. Political influence in the church did not disappear — some analysts argue it increased, as the church's governing bodies became more explicitly politicised after disestablishment [23]. Sweden's experience suggests that formal separation does not eliminate state-church entanglement, and may create new forms of it.

France (1905). The loi de séparation of 9 December 1905 ended the Napoleonic Concordat, disestablished the Catholic Church, and declared state neutrality in religious matters [24]. Church property — cathedrals, smaller churches — was transferred to state or municipal ownership and made available to religious associations [24]. The law is widely cited as a model of laïcité (secularism), but its legacy is contested. Critics argue that French laïcité has evolved from protecting religious freedom into a tool for restricting religious expression, particularly among Muslims — the ban on conspicuous religious symbols in public schools (2004) and the burqa ban (2010) are both rooted in laïcité's legal framework [25]. For the Green Party, France's example raises an uncomfortable question: does formal separation lead to genuine pluralism, or does it create a framework that can be turned against religious minorities?

The Church's £55 Billion Social Footprint

Defenders of the established church point to its role as a provider of social services. Independent economic analysis commissioned by the National Churches Trust estimates the economic and social value of churches to the UK at £55 billion per year [26]. The Church of England has committed to investing more than £1.6 billion over three years in community services, and the Church Commissioners have allocated £25 million to a Social Impact Investment Programme supporting housing, social care, food banks, and skills development [27].

The Reimagining Care Commission, launched in 2021 by the Archbishops of Canterbury and York, developed policy recommendations for adult social care in England — an area where the Church has deep institutional involvement through parish-level services [28]. Church buildings serve as polling stations, community centres, and food distribution points in many areas where no alternative infrastructure exists.

Critics counter that the Church's social spending is not dependent on establishment — disestablished churches in Sweden and elsewhere continue to provide community services — and that the Church of England's substantial wealth (the Church Commissioners manage an endowment valued at over £10 billion) means it does not need state backing to fund its charitable work [29].

Constitutional Mechanics and Legal Obstacles

Disestablishment would require primary legislation. Parliament has done this before — for the Church of Ireland in 1869 and the Church in Wales in 1920 — but the Church of England is far more deeply embedded in the constitutional framework [12].

The House of Commons Library's 2025 briefing on church-state relations identifies several unresolved legal questions [9]. Can Parliament disestablish the Church without amending the Coronation Oath Act 1688? Would legislation need to address the monarch's role as Supreme Governor separately? What happens to the Ecclesiastical Courts, which still have jurisdiction over certain matters of church law?

Sweden's disestablishment process, from the first serious parliamentary discussions in the 1990s to implementation in 2000, took roughly a decade [21]. The National Secular Society introduced a Disestablishment of the Church of England Bill in Parliament in late 2023, which received a first reading in the House of Lords but has not progressed further [30]. Any future legislation would face these same structural hurdles.

The Green Party itself has acknowledged the political reality. In a prior statement, the party said disestablishment "will not be a priority" at the next general election, suggesting this is a long-term policy aspiration rather than an immediate legislative agenda [31].

Who Is Behind the Push?

The Green Party's disestablishment position aligns closely with the campaigns of two organisations: Humanists UK and the National Secular Society [11][6].

Humanists UK, which attended the Green Party's 2025 conference in Bournemouth, advocates for disestablishment and the removal of bishops from the Lords [6]. The party includes an internal group called Green Humanists, which brings non-religious members together to advocate for secularist policies [6]. The National Secular Society, founded in 1866, has run a sustained campaign for disestablishment for over 150 years, publishing detailed policy proposals including its 2017 report "Separating Church and State: The Case for Disestablishment" [11].

Whether the disestablishment push reflects grassroots Green Party membership priorities or leadership strategy is difficult to assess from available evidence. The policy was adopted through the party's internal policy process, which involves member votes at conference. But the timing — coinciding with the party's post-2024 surge and Polanski's efforts to differentiate the Greens from Labour — suggests a degree of strategic calculation. The party's broader constitutional reform agenda (Lords reform, proportional representation) provides a coherent framework within which disestablishment fits, rather than appearing as an isolated culture-war provocation.

The Steelman for Establishment

The strongest case for maintaining the Church of England's established status rests on three pillars.

First, the Lords Spiritual provide guaranteed religious representation in Parliament. In a political system where no other mechanism ensures that religious perspectives — of any faith — are heard in the legislature, removing bishops could reduce rather than increase the diversity of voices in the Lords [10].

Second, establishment creates state accountability over church governance. The Prime Minister's role in appointing bishops, and Parliament's role in approving changes to church law through the Ecclesiastical Committee, mean the Church of England is subject to democratic oversight in ways that a fully independent church would not be [9]. Disestablishment could make the church less accountable to the public, not more.

Third, the Church's social infrastructure — schools, parish services, community investment — is partly sustained by the institutional confidence that establishment confers. The Church of England's 3,160 schools, its network of 12,000 parishes, and its billions in community investment function within a framework where the church is understood as a public institution with public obligations [13][26]. Severing that link could reduce the church's sense of civic responsibility without replacing the services it provides.

Against these arguments, the Green Party and its allies maintain that a country where Christians are a minority, where 50% of the public supports disestablishment, and where the UK stands as the only Western democracy with reserved clerical seats in its legislature has outgrown an arrangement designed for a religiously homogeneous society [15][11]. The question is not whether the arrangement will change, but how, how fast, and what replaces it.

Source: OpenAlex

Data as of Jan 1, 2026CSV

What Comes Next

The Green Party's four MPs lack the numbers to force legislation. Labour, with its commanding majority, has shown no interest in the issue. The Conservative Party remains broadly supportive of establishment. The Liberal Democrats have historically favoured Lords reform but have not made disestablishment a priority.

The more likely path of change is incremental. The Harman amendment on Lords Spiritual, though defeated in 2025, signals growing appetite within the broader political class for at least partial reform [10]. The House of Lords (Hereditary Peers) Act 2026, which removed the last hereditary aristocrats from Parliament, has renewed questions about why bishops retain automatic seats when hereditary peers no longer do [2].

For now, the Green Party's disestablishment proposal functions more as a statement of values than a legislative programme. But in a country where the demographic and polling trends all point in one direction, the question of whether the Church of England should remain established is no longer confined to constitutional theorists and secularist campaigners. It has entered mainstream political debate — carried there, improbably, by a party that won its first parliamentary seat only in 2010.