Few relationships in modern history carry as much unresolved weight as the one between Britain and Ireland. It is a relationship built on centuries of conquest, plantation, famine, partition and violence, and it is still, right now, unsettled. Brexit reopened questions that the Good Friday Agreement was supposed to have closed. The Windsor Framework papered over a rupture that unionist politicians in Northern Ireland have never actually accepted. And the monarchy, an institution with a direct and often brutal history in Ireland, still sits at the constitutional centre of the North. To understand any of this, you have to start a long way back.

Conquest, plantation and the roots of division

English involvement in Ireland dates back to the twelfth century, but the period that shaped modern Ireland most directly began under the Tudors and intensified through the seventeenth century. The Plantation of Ulster, beginning in 1609, saw land confiscated from the native Irish and granted to Protestant settlers from England and Scotland.1 This was not incidental colonisation. It was a deliberate state policy designed to secure a rebellious province by replacing its population's loyalties, and it created the demographic and religious divide, Protestant and largely British-descended in the north, Catholic and Gaelic elsewhere, that still defines Northern Ireland's politics today.

The Act of Union in 1801 abolished the Irish Parliament and folded Ireland directly into the United Kingdom, a move driven in large part by British fears that a French-backed Irish rebellion, following the 1798 uprising, could threaten British security.2 Catholics in Ireland, still the overwhelming majority, were subject to penal laws restricting land ownership, political office and worship for much of this period. The union was, from the outset, a union between deeply unequal partners.

The Famine, and the question that still divides historians

Between 1845 and 1852, potato blight destroyed Ireland's staple crop. Around a million people died and a million more emigrated, a demographic collapse from which parts of Ireland never fully recovered. Whether this was simply a natural disaster mishandled by an indifferent government, or something closer to a deliberate act of genocide, remains one of the most contested questions in Irish history, and it is worth being honest about where that debate actually stands.

The nationalist case rests on real and disturbing facts. The British government, and specifically the Whig administration under Lord John Russell, largely adhered to laissez-faire economic doctrine even as people starved. Ireland continued to export food throughout the Famine, under armed guard, while its own population died. Relief efforts, including the workhouse system and public works schemes, were poorly designed, often required starving people to labour before receiving aid, and were scaled back even as the crisis deepened.3 For many Irish nationalists and much of the Irish diaspora, particularly in the United States, this pattern amounts to genocide, a deliberate or reckless destruction of a people, and it is commemorated as such in murals, monuments and school curricula in parts of Ireland and America.4

Against this, the near-unanimous position of professional historians, in Ireland, Britain and North America alike, is that the Famine does not meet the legal or historical threshold for genocide.5 Their argument is not that British policy was blameless. Almost no serious historian defends the adequacy of the relief effort. Their argument is that genocide requires demonstrable intent to destroy a people, and that the documentary record instead shows an administration constrained by ideology, incompetence and prejudice against the Irish poor, rather than one pursuing extermination. Some historians prefer terms like colonial neglect, structural violence or crime against humanity, categories serious enough to convey the scale of the wrong without requiring proof of a specific genocidal intent that the archives do not clearly show.6

Both positions can be held by serious people for serious reasons. What is true without dispute is that the Famine reshaped Ireland permanently, accelerated the decline of the Irish language, fuelled mass emigration that built Irish diaspora communities across the world, and hardened a nationalist movement that would, within a lifetime, fight for and win independence.

Partition, the Troubles, and the peace that followed

Home Rule campaigns through the late nineteenth and early twentieth centuries repeatedly passed the Commons only to be blocked or delayed, feeding a sense in nationalist Ireland that constitutional politics alone would not deliver independence. The 1916 Easter Rising, though militarily crushed within a week, transformed Irish public opinion after the British executed its leaders. The War of Independence followed, ending in the 1921 Anglo-Irish Treaty, which partitioned the island. Twenty-six counties became the Irish Free State, eventually the Republic of Ireland. Six counties in the north-east, where the Protestant unionist population who wanted to remain British held a majority, became Northern Ireland, still part of the United Kingdom.

That settlement did not resolve the underlying division, it institutionalised it. Northern Ireland's Catholic minority faced discrimination in housing, employment and voting rights for decades, grievances that fed directly into the civil rights movement of the late 1960s and, from there, into the Troubles, roughly three decades of violence between republican paramilitaries seeking a united Ireland, loyalist paramilitaries defending the union, and British state forces, which killed more than 3,500 people.7

The 1998 Good Friday Agreement ended the worst of that violence. It established power-sharing government in Northern Ireland, formally required cross-community consent for any future change to Northern Ireland's constitutional status, and, critically, removed the need for a hard border on the island of Ireland by keeping both the UK and the Republic inside the European Union's single market.8 That last detail would matter enormously twenty years later.

Brexit and the return of the border question

The 2016 Brexit referendum did not ask a single question about Ireland, but it reopened one of the most sensitive issues the Good Friday Agreement had settled. Once the UK left the EU single market and customs union, a hard border somewhere on the island of Ireland became a real technical possibility, either between Northern Ireland and the Republic, reintroducing exactly the kind of border infrastructure the peace process had removed, or between Northern Ireland and the rest of the UK, effectively treating Northern Ireland differently from Great Britain.

The original Northern Ireland Protocol, agreed in 2019, chose the second option. It kept Northern Ireland aligned with EU single market rules for goods, avoiding a hard border with the Republic, but creating a new economic and regulatory border in the Irish Sea instead. Unionist politicians, particularly the Democratic Unionist Party, saw this as a direct threat to Northern Ireland's place within the UK, and the DUP collapsed the Northern Ireland Assembly's power-sharing government in protest for roughly two years.9

The 2023 Windsor Framework, negotiated between the UK and the EU, softened the Protocol's practical edges. It created a green lane for goods staying within the UK, easing customs checks, and resolved specific disputes over medicine supply and VAT rules.10 But it did not resolve the underlying constitutional objection. Under the Good Friday Agreement's own consent mechanism, the Northern Ireland Assembly voted in December 2024 on whether to continue the Windsor Framework's core trading arrangements. It passed, but every single unionist MLA voted against it, meaning there was no cross-community majority, the very standard the peace process was built around.11 That result forced the UK government to launch an independent review of how the Framework operates, which is still ongoing.

The monarchy's uneasy place

The Crown's relationship with Ireland is, unsurprisingly, complicated by all of the above. The Republic of Ireland has been fully independent of the monarchy since 1949. Northern Ireland remains part of the United Kingdom, meaning the King remains head of state there, and unionist identity is tied closely to symbols of the Crown, flags, parades, royal visits, in a way that many nationalists in Northern Ireland do not share and sometimes actively reject.

Queen Elizabeth II's 2011 state visit to the Republic, the first by a reigning British monarch since independence, was widely seen as a significant act of reconciliation, not least because she laid a wreath at the Garden of Remembrance honouring those who died fighting for Irish independence from the Crown she embodied.12 It was a symbolic gesture precisely because the history being gestured at was so heavy. The monarchy today functions less as an active political force in Ireland and more as a persistent symbol of the union itself, which is exactly why its future in Northern Ireland is bound up with the constitutional question rather than separate from it.

What comes next

This is where the history stops being history and becomes live politics, and it is genuinely unresolved. The Good Friday Agreement guarantees a border poll, a referendum on Irish unity, if a Northern Ireland Secretary of State judges that a majority would likely vote for it. Polling on that question is messy and contested, and the answer depends heavily on how the question is asked. Surveys asking a straightforward border poll question have generally shown a plurality preferring to stay in the UK, with figures in recent years typically running around 45 to 55 in favour of the union.13 But polling that frames unification specifically as continued EU membership, addressing the fact that Northern Ireland lost its automatic EU citizenship rights through Brexit in a way the Republic did not, has produced notably higher support for unity, in one 2026 survey as high as 63% in Northern Ireland itself.14 Analysts caution against reading too much into any single result, since question wording clearly moves the numbers substantially, but the broader trend, that Brexit has measurably shifted the constitutional conversation, is not seriously disputed.

Demographics add another layer. Northern Ireland's 2021 census recorded, for the first time, more Catholics than Protestants, and some analysts project that a majority Catholic electorate could emerge by around 2030.15 Religious identity does not map perfectly onto constitutional preference, plenty of Catholics support the union and some Protestants do not, but the shift is real and it is watched closely on both sides.

And this is where it becomes immediately relevant rather than merely historical. Prime Minister Andy Burnham has said directly that he is not interested in pursuing constitutional change or a border poll.16 His Northern Ireland Secretary, Chris Bryant, has struck a more open tone, telling Sinn Féin leaders after taking office that a border poll may come, without committing to any timeline.16 That gap between the Prime Minister's caution and his own Secretary of State's acknowledgement captures where Britain actually stands on Ireland in 2026: nobody in government wants to be the one who triggers the next chapter, but nobody is confidently ruling it out either.

Why this history still matters

None of this is settled, and treating it as settled, in either direction, misreads where things actually stand. Ireland's history is not a closed chapter that occasionally gets referenced in speeches. The Plantation shaped where the current divide sits geographically. The Famine, whatever term historians eventually settle on, shaped the diaspora and the depth of grievance that nationalism draws on. Partition and the Troubles shaped the institutions, the Good Friday Agreement's consent mechanism among them, that Brexit then collided with. And Brexit itself has done something no single event had managed since 1998, it has made the constitutional question live again, not through violence this time, but through economics, polling, and the plain fact that Northern Ireland is now, in practical terms, half in and half out of two different systems at once.

Whatever comes next, a continued union, a united Ireland, or more likely years more of the current uneasy arrangement, will be shaped by a history that Britain has never fully reckoned with and Ireland has never been able to leave behind.

This article is non-partisan. Where historical or political questions remain genuinely contested, including the classification of the Famine and the future of Northern Ireland's constitutional status, it sets out the competing positions rather than endorsing one.

Footnotes

  1. Public Record Office of Northern Ireland, Plantations in Ulster, 1600-1641 (opens in a new tab), 1st April 2019. An official documentary collection on the Plantation and its confiscation and resettlement of land.

  2. UK Parliament, Parliamentary union (opens in a new tab), as at 9th September 2026. On the passage of the Act of Union and the abolition of the Irish Parliament from 1 January 1801.

  3. Brill, Rethinking and Recognizing Genocide: The British and the Case of the Great Irish Potato Famine (opens in a new tab), 15th April 2009. On food exports, relief policy and the Russell administration's response.

  4. Genocide Watch, An Gorta Mór: The Question of the Irish 'Genocide' (opens in a new tab), 21st October 2021. On nationalist and diaspora framing of the Famine and its commemoration.

  5. History Reclaimed, The White Man's Burden Reinvented (opens in a new tab), 6th September 2021. On the near-unanimous academic historian consensus against the genocide classification.

  6. University of Notre Dame Press, Human Encumbrances: Political Violence and the Great Irish Famine (opens in a new tab), 2011. On David Nally's alternative framings, such as "famineogenic behaviour" and structural violence.

  7. BBC History and standard estimates of Troubles-era fatalities, commonly cited at more than 3,500 deaths between the late 1960s and 1998.

  8. Good Friday Agreement 1998, on power-sharing, cross-community consent and the removal of a hard border, as implemented via the Northern Ireland Act 1998.

  9. House of Commons Library, The Northern Ireland Protocol and Windsor Framework (opens in a new tab), 1st February 2024. On the original 2019 Protocol, the Irish Sea border and the DUP's collapse of the Assembly.

  10. EY, UK and EU amend Northern Ireland Protocol with Windsor Framework (opens in a new tab), 6th March 2023. On the green lane, medicine and VAT changes agreed in 2023.

  11. The Political Quarterly, Democratic Consent for the Windsor Framework (opens in a new tab), 23rd Novemeber 2026. David Phinnemore, on the December 2024 Assembly vote, unionist opposition and the resulting independent review.

  12. Widely reported coverage of Queen Elizabeth II's 2011 state visit to Ireland and her wreath-laying at the Garden of Remembrance, Dublin.

  13. Wikipedia, Opinion polling on a United Ireland (opens in a new tab), as at 9th September 2026. Compiling LucidTalk, Northern Ireland Life and Times Survey, and ARINS/Irish Times polling from 2023 to 2025.

  14. Irish Border Poll, New Poll Shows Strong Support for a United Ireland on Both Sides of the Border as Part of the European Union (EU) (opens in a new tab), 9th May 2026. On the European Movement Ireland / Amárach Research 2026 poll showing 63% support in Northern Ireland for a united Ireland framed as continued EU membership.

  15. Northern Ireland Statistics and Research Agency, Census 2021 main statistics religion tables (opens in a new tab), 22nd September 2022. On 2021 census results on religious composition, and subsequent demographic projections discussed in coverage of a potential Catholic-majority electorate by around 2030.

  16. Irish Border Poll, The Irish Unity Project: Moving Forward or Momentum Stalled? (opens in a new tab), 26th July 2026. On Prime Minister Andy Burnham's statement that he is not interested in constitutional change or a referendum, and on Northern Ireland Secretary Chris Bryant's comments following his first calls with Sinn Féin leaders Mary Lou McDonald and Michelle O'Neill, acknowledging a border poll may come. 2