We speak of “the United Kingdom” as though it were a natural, permanent fact, like a mountain range. It is nothing of the kind. It is a political construction, assembled over centuries through royal marriage, parliamentary bargain, conquest and crisis — and it has been losing and reshaping parts of itself for almost as long as it has existed. The state that exists today is not the one created in 1707, nor the one that existed in 1910. The story of the Union is not a finished monument but an unfinished argument about who belongs together, on what terms, and whether the arrangement can be undone.
Crowns before countries
The pieces came together gradually and unevenly. England had absorbed Wales by the sixteenth century, through conquest centuries earlier and formal incorporation under the Tudors, so that Wales was governed as part of the English legal and parliamentary system. England and Scotland, by contrast, remained entirely separate kingdoms with their own parliaments, churches and laws — sharing only, from 1603, a monarch, when the Scottish King James VI inherited the English throne to become James I of England as well.
A shared crown is not a shared state, and for a century the two kingdoms coexisted uneasily under one king while remaining politically distinct. The arrangement was unstable, and by the early eighteenth century both sides had reasons to want more.
The bargain of 1707
The Union of England and Scotland in 1707 was, above all, a deal. It was driven by hard interest on both sides rather than by any romance of British brotherhood. England wanted to secure its northern border and guarantee the Protestant succession, fearing that an independent Scotland might choose a different, possibly Catholic, monarch and ally with France. Scotland, for its part, was in serious financial trouble, partly owing to the catastrophic failure of an attempt to found a colony at Darien, and its merchants coveted access to England’s growing empire and trade.
The Acts of Union passed by both parliaments created a single kingdom of Great Britain with a single parliament at Westminster. Crucially, the bargain preserved key Scottish institutions: its own legal system, its own established Presbyterian church, and its own education system. This was a union of parliaments, not a total absorption, and the survival of those distinct Scottish institutions would matter enormously three centuries later. The deal was deeply unpopular with much of the Scottish public at the time, and the Jacobite risings that followed, culminating in 1745, were in part a violent rejection of it. But the Union held.
Great Britain was created not by a people but by two parliaments doing a deal.
Ireland: the union that failed
Ireland’s incorporation was different in kind, and its failure is central to understanding the modern United Kingdom. Ireland had long been under English and then British control, governed through its own subordinate parliament in Dublin — but one representing only the Protestant landowning minority, in a country whose population was overwhelmingly Catholic and largely excluded from power and land.
The Act of Union of 1801 abolished the Dublin parliament and brought Ireland directly into a new United Kingdom of Great Britain and Ireland, governed from Westminster. But the union was built on an unresolved injustice. The promise of Catholic emancipation that might have reconciled the majority was delayed for decades. The catastrophe of the Great Famine in the 1840s, in which roughly a million people died and a million more emigrated while the wider state’s response was widely seen as inadequate, left a lasting bitterness. Through the nineteenth century the demand for “Home Rule” — Irish self-government within the United Kingdom — grew into the dominant question of Irish politics, repeatedly raised at Westminster and repeatedly blocked, not least by the fierce resistance of Protestant Ulster, which dreaded being ruled by a Catholic majority.
The crisis broke after the First World War. The Easter Rising of 1916 and the war of independence that followed made continued union impossible. In 1921 to 1922 Ireland was partitioned: most of the island became the independent Irish Free State, later the Republic of Ireland, while six counties in the north, with their Protestant and unionist majority, remained within the United Kingdom as Northern Ireland. The state was renamed the United Kingdom of Great Britain and Northern Ireland — the very name a record of what had been lost. The unresolved tensions within Northern Ireland would later erupt into the decades of violence known as the Troubles, ended, though not entirely resolved, by the Good Friday Agreement of 1998.
The persistence of nations
What is striking across all this history is how stubbornly the constituent nations retained their separate identities. The Union created a British state and, to a real degree, a shared British identity — forged through empire, Protestantism, war and monarchy. Millions came to feel genuinely and proudly British. But Britishness was layered on top of older national identities rather than dissolving them. People remained Scottish, Welsh, English, Irish — and British as well, in varying measure.
Those preserved institutions mattered. Scotland’s separate legal and educational systems and its distinct church meant that Scottish national identity always had concrete, living form, not merely sentiment. Wales preserved its language against long pressure, and a sense of Welsh distinctiveness endured even within close integration. The nations never quite melted into a single homogeneous people, and that incomplete fusion is the soil in which the modern devolution debate grew.
The unfinished story of devolution
For most of the twentieth century, the United Kingdom was one of the most centralised states in Europe, governed overwhelmingly from Westminster. By its end, that had changed dramatically. Rising nationalist sentiment, particularly in Scotland, and a sense in Scotland and Wales of being governed by parties they had not voted for, built pressure for self-government.
The decisive moves came at the very end of the century. Referendums in 1997 led to the creation of a Scottish Parliament and a Welsh assembly, each with its own powers, opening in 1999. Northern Ireland gained its own power-sharing assembly under the Good Friday Agreement. Power that had been concentrated at Westminster for centuries was, for the first time, formally dispersed to elected bodies in three of the four nations. England, notably, was largely left out of this settlement, creating an asymmetry that remains awkward and unresolved.
Devolution did not settle the question of the Union; if anything it sharpened it. In 2014 Scotland held a referendum on independence itself, voting to remain in the United Kingdom by a clear but not overwhelming margin. The question did not go away. The decision of the United Kingdom as a whole to leave the European Union in 2016 — against the wishes of majorities in Scotland and Northern Ireland — reopened constitutional tensions and gave fresh energy to debates about the Union’s future. The shape and even the survival of the United Kingdom remain genuinely open questions, argued over in a way that would have been unthinkable a few generations ago, and on which reasonable people disagree.
A kingdom still being negotiated
The United Kingdom, then, is best understood not as a settled nation but as a long, continuing negotiation. It was made by treaties driven by interest, held together by shared enterprise and identity, and reshaped repeatedly by crisis and loss. It has already changed its borders and its very name within living memory. It has handed real power back to its constituent nations. And it continues to ask itself the oldest question of all: who are “we,” and on what terms do we choose to stay together?
That the question is still openly debated, by ballot rather than by battle, is itself an achievement of sorts. The Union was assembled by parliaments doing deals; it may yet be remade the same way. What is certain is that nothing about its present shape is final. A kingdom united, yes — but never quite at rest, and never beyond contest.