The largest city in the United Kingdom is London, with roughly 8.9 million people, followed by Birmingham (about 1.1 million), Leeds (0.81 million), Glasgow (0.63 million), Sheffield (0.58 million), Manchester (0.55 million), Edinburgh (0.54 million), Liverpool (0.49 million), Bristol (0.47 million) and Cardiff (0.36 million). Together these cities anchor a nation of around 67 million people, spread across four constituent countries: England, Scotland, Wales and Northern Ireland.
The Ten Largest UK Cities
Ranking UK cities is trickier than it looks, because figures depend on whether you count a city's official local-authority boundary or its wider built-up urban area. Using city-proper populations, the leading ten are:
- London — ~8.9 million, the capital and by far the largest
- Birmingham — ~1.1 million, England's "second city"
- Leeds — ~0.81 million, the financial heart of Yorkshire
- Glasgow — ~0.63 million, Scotland's largest city
- Sheffield — ~0.58 million, the historic "Steel City"
- Manchester — ~0.55 million, the original industrial powerhouse
- Edinburgh — ~0.54 million, Scotland's capital
- Liverpool — ~0.49 million, a great maritime port
- Bristol — ~0.47 million, the largest city in the South West
- Cardiff — ~0.36 million, the capital of Wales
Why London Dwarfs Everywhere Else
London is in a class of its own. At about 8.9 million residents, it is roughly eight times the size of Birmingham and accounts for around one in eight people in the entire UK. Its wider metropolitan area pushes well past 14 million. London was the most populous city on Earth from 1831 to 1925, riding the wealth of empire and the Industrial Revolution. Today it remains the country's political capital, the seat of Parliament and the monarchy, and one of the world's foremost financial centres alongside New York. No other British city comes close to its concentration of jobs, transport links, universities and cultural institutions.
Industrial Cities of the North and Midlands
Many of the UK's biggest cities owe their size to the Industrial Revolution. Birmingham grew on metalworking and manufacturing and still sits at the centre of the West Midlands conurbation. Manchester pioneered the modern factory system and the world's first inter-city railway, while neighbouring Liverpool became one of the planet's busiest ports, handling cotton, sugar and emigrants bound for the Americas. Leeds and Sheffield built their fortunes on wool textiles and steel respectively. These cities have since reinvented themselves around services, media, finance, sport and higher education, but their grand Victorian architecture still tells the story of nineteenth-century wealth.
The Capitals of Scotland, Wales and Northern Ireland
The UK is a union of nations, and each has its own leading cities. Glasgow is Scotland's largest, a former shipbuilding giant on the River Clyde, while Edinburgh, the Scottish capital, is famous for its castle, festivals and financial sector. Cardiff serves as the capital of Wales and home to the Senedd, the Welsh parliament. Belfast, the capital of Northern Ireland, falls just outside the top ten by city-proper count but remains a major centre with a metropolitan population of several hundred thousand. This spread of capitals reflects the devolved governments that now run many domestic affairs across the UK.
How the Rankings Can Shift
Because British cities blur into one another, totals change depending on the definition used. Greater Manchester, for example, holds around 2.8 million people across its built-up area, far more than the city of Manchester alone. The West Midlands and West Yorkshire conurbations similarly contain millions once neighbouring towns are added. Official "city" status in the UK is also a royal honour rather than a population threshold, so some small places (like St Davids in Wales, with around 1,600 people) are cities while large towns are not. For population rankings, demographers usually rely on built-up area or local-authority figures from the Office for National Statistics. Test how well you know these urban giants with our geography games.
London Is in a Category of Its Own
Greater London holds somewhere approaching nine million people, which is more than the next several British cities combined. No other European country of comparable size has such a dominant single city relative to its rivals.
The imbalance is economic as much as demographic. London and the south-east generate a disproportionate share of national output, and the productivity gap between London and the rest of the United Kingdom is among the widest of any advanced economy, a fact that has driven the levelling-up debate in British politics for a decade.
The City of London itself, the historic square mile, is a separate local authority with fewer than ten thousand residents, its own police force and a Lord Mayor distinct from the Mayor of London. It is the oldest continuous municipal democracy in the country.
The Industrial Revolution Built the Rest
Birmingham, Manchester, Leeds, Sheffield, Glasgow and Liverpool were small towns before the eighteenth century and became some of the largest cities in the world within a hundred years. Coal, textiles, iron and shipping did it.
Manchester was the first industrial city anywhere, built on cotton spun in steam-powered mills, and Friedrich Engels wrote his account of working-class conditions there in 1845. Liverpool was the port that handled the raw material, and before that a substantial share of the British slave trade.
Glasgow built roughly a fifth of the world's ships at its peak on the Clyde. Sheffield made steel and cutlery; Birmingham made everything else, earning the description of the city of a thousand trades. Most of those industries collapsed between the 1960s and the 1980s, and the cities have spent the decades since rebuilding around services, universities and culture.
City Status Is Granted, Not Earned
In the United Kingdom, city is a formal title conferred by the monarch, not a threshold of population. That is why St Davids in Wales, with around 1,600 residents, is a city while Reading and Northampton, each with well over 150,000, are technically towns.
The title was historically tied to having a cathedral, a convention that broke down in the nineteenth century. Since then it has been granted through competitions, most recently in 2022 for the Platinum Jubilee, when eight places including Doncaster, Colchester and Dunfermline were elevated.
The practical consequence for any ranking is that British city lists usually count urban areas or local authority districts instead, which is why the figures here do not match the list of places holding the formal title.
Four Countries, Four Capitals
The United Kingdom contains four constituent countries, and each has its own capital: London for England and the UK as a whole, Edinburgh for Scotland, Cardiff for Wales and Belfast for Northern Ireland.
Devolution since 1999 has given Scotland, Wales and Northern Ireland their own legislatures with control over health, education and, in Scotland's case, a range of tax powers. Edinburgh's parliament building opened in 2004; the Senedd in Cardiff Bay in 2006.
Edinburgh is also the smaller of Scotland's two big cities. Glasgow has the larger population, a rivalry that runs through Scottish commercial, sporting and cultural life much as Manchester's does with London.
The Green Belts Shaped Where Cities Stop
British cities have unusually hard edges, and the reason is policy. Green belts, introduced around London from 1938 and extended nationally after 1947, ring the major conurbations with land on which development is heavily restricted.
They cover roughly an eighth of England, and they have successfully prevented the continuous sprawl seen around comparable American or Australian cities. They have also pushed development into commuter towns beyond the belt and are widely blamed for the cost of housing near the largest cities.
The result is visible from the air: Manchester, Birmingham and London all end abruptly at a line of farmland rather than tapering into suburb. Whether to build on parts of the belt is one of the most persistent arguments in English local politics. The wider geography behind it is in our United Kingdom country guide.
Common Questions About UK Cities
What is the largest city in the UK?
London is the largest city in the United Kingdom, with about 8.9 million residents within Greater London and more than 14 million across its wider metropolitan area.
What is the second largest city in the UK?
Birmingham, with around 1.1 million people, is the second largest city by city-proper population and is often called England's "second city."
What is the largest city in Scotland?
Glasgow is the largest city in Scotland with roughly 0.63 million people, ahead of the Scottish capital Edinburgh at about 0.54 million.
How many people live in the United Kingdom?
The UK has a total population of approximately 67 million, distributed across England, Scotland, Wales and Northern Ireland, with England being by far the most populous.
What is the second-largest city in the UK?
Birmingham by local authority population, at well over a million. If you measure built-up urban areas instead, the Greater Manchester conurbation is larger, which is why the question generates so much argument.
Why is the City of London separate from London?
Because it predates the rest of it. The square mile has governed itself since before the Norman conquest and kept those privileges as the capital grew around it. It has around ten thousand residents, its own police force, and a Lord Mayor who is not the Mayor of London.
Which is the largest city in Scotland?
Glasgow, with roughly 600,000 in the council area and well over a million in the wider conurbation. Edinburgh is the capital and the smaller of the two, a split that mirrors the Canberra and Sydney or Washington and New York pattern.