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FrançaisThe United Kingdom is one sovereign state made of four countries: England, Scotland, Wales and Northern Ireland. They share a passport, a currency and a foreign policy, and they differ in law, language, school system and, increasingly, speed limits. Working out which of the four you are actually going to is the first decision in planning a UK trip, because “a week in the UK” and “a week in Scotland” are very different holidays.
The naming is the part that trips everyone up, and it is worth 90 seconds before you book anything. The United Kingdom is the political unit. Great Britain is an island. England is a country on that island. They are not interchangeable, and using them as though they were will get you corrected in Cardiff, Glasgow and Belfast.
United Kingdom, Great Britain and England: the difference
The three terms describe three different things, and the table below sets out which is which.
| Term | What it means | What it includes |
|---|---|---|
| United Kingdom | A sovereign state, the political unit | England, Scotland, Wales, Northern Ireland |
| Great Britain | An island, a geographical term | England, Scotland, Wales. Not Northern Ireland |
| England | One country inside the UK | England only |
| The British Isles | An archipelago, a geographical term | The UK, the Republic of Ireland, the Isle of Man and the Channel Islands |
The UK’s full name is the United Kingdom of Great Britain and Northern Ireland, which is the whole explanation compressed into one title. It covers the island of Great Britain, the north-eastern corner of the island of Ireland, and several hundred smaller islands.
“Ireland” is the confusing one. Geographically it is the whole island. Politically it usually means the Republic of Ireland, which is an independent country and not part of the UK, as distinct from Northern Ireland, which is. If a guide, a rail map or a ferry timetable says “Ireland”, check which of the two it means before you buy anything.
The islands that are not part of Great Britain
Great Britain is the island itself, so the smaller islands around it are part of the UK without being part of Great Britain. The six groups people most often get wrong are listed below.
- The Shetland Islands, the UK’s most northerly inhabited land, well north-east of the Scottish mainland.
- The Orkney Islands, off the north coast of Scotland.
- The Hebrides, Inner and Outer, off Scotland’s west coast.
- The Islands of the Clyde, including Arran and Bute.
- The Isle of Anglesey, off north-west Wales and connected to it by two bridges.
- The Isle of Wight, off the south coast of England.
Everyday usage folds all of these into “Great Britain”, and for planning purposes that is harmless. It only matters if someone is being precise at you.
Devolution: who has a parliament
England is the only one of the four countries with no parliament of its own. This is the single most common error in guides to the UK, and it explains a great deal about British politics.
- Scotland has the Scottish Parliament at Holyrood in Edinburgh, with the widest devolved powers of the three, including income tax and the whole legal system.
- Wales has the Senedd, or Welsh Parliament, in Cardiff Bay. It was called the National Assembly for Wales until May 2020.
- Northern Ireland has the Northern Ireland Assembly at Stormont, which has been suspended and restored several times.
- England is governed directly by the UK Parliament at Westminster, which also legislates for the whole UK on reserved matters.
The practical effect for a visitor is that laws differ across a border you will not see. Scotland has its own legal system and its own school holidays; Wales has a default 20 mph limit on restricted roads where England has 30; Northern Ireland shares a land border and a good deal of everyday life with the Republic.
Crown Dependencies, Realms and Overseas Territories
Three more categories sit around the UK without being in it, and they get conflated constantly.
The Crown Dependencies are the Isle of Man, Jersey and Guernsey. They are self-governing possessions of the Crown rather than part of the UK, each with its own parliament, tax system and laws. Their residents hold British passports, though the rights attached are not identical to a UK citizen’s.
The Commonwealth realms are the 15 independent countries that share King Charles III as head of state, the UK included. Besides the UK they are Antigua and Barbuda, Australia, the Bahamas, Belize, Canada, Grenada, Jamaica, New Zealand, Papua New Guinea, St Kitts and Nevis, St Lucia, St Vincent and the Grenadines, the Solomon Islands and Tuvalu. Barbados left the group on 30 November 2021 when it became a republic, so any list that still includes it is out of date.
The British Overseas Territories number 14: Anguilla, Bermuda, the British Antarctic Territory, the British Indian Ocean Territory, the British Virgin Islands, the Cayman Islands, the Falkland Islands, Gibraltar, Montserrat, the Pitcairn Islands, St Helena, Ascension and Tristan da Cunha, South Georgia and the South Sandwich Islands, the Turks and Caicos Islands, and Akrotiri and Dhekelia on Cyprus. Gibraltar and the Falklands are the two whose sovereignty is disputed.
The four countries, and what each is for
Each of the four countries gives you something the other three do not, and the table below is the short version.
| Country | Capital | Go for |
|---|---|---|
| England | London | London itself, the Lake District, Cornwall’s coast, York, Hadrian’s Wall, Stonehenge |
| Scotland | Edinburgh | The Highlands, Loch Ness, Skye, Edinburgh’s festivals, whisky |
| Wales | Cardiff | Eryri and Bannau Brycheiniog, 600 castles, the 870-mile coast path |
| Northern Ireland | Belfast | The Giant’s Causeway, the Antrim coast road, Belfast’s Titanic Quarter |
England
England is the largest and most-visited of the four, and the mistake most first trips make is not leaving London. The capital has the museums, the theatre and the arrival airports; the rest of the country has the Lake District’s fells, York’s Roman walls, Northumberland’s empty beaches and the Cornish coast.
Our full trip to England guide covers the 9 English regions, entry requirements, what to pack by season and how to move around.
Wales
Wales is the smallest of the three mainland countries and the one with the most castles per square mile anywhere in the world. It has three national parks, a coast path that runs 870 miles (1,400 km) around the entire country, and a living language spoken by about a fifth of the population.
Our full Wales holidays guide covers the 22 principal areas, how to get there by train and ferry, the Welsh phrases worth knowing and what has been renamed recently.
Scotland
Scotland has the UK’s most dramatic landscape and its own everything else: legal system, banknotes, school year and licensing laws. The Highlands and Islands are the reason most people come, Edinburgh takes over the world for three weeks every August, and the whisky regions are a route in their own right.
We have written about cruising Loch Ness and Urquhart Castle from Inverness, which is the classic day out from Inverness, the Highland capital.
Northern Ireland
Northern Ireland is the only part of the UK with a land border, and it is small enough to cross in two hours. The Giant’s Causeway, the Causeway Coastal Route, the Mourne Mountains and Belfast’s Titanic Quarter are the headline sights, and Dublin is two hours by train from Belfast.
Getting around the United Kingdom
Trains connect the four countries’ cities and a car reaches everything else, which is the same answer in all four. The rail network runs the length of Great Britain, with Edinburgh and Glasgow around four and a half hours from London and Cardiff about two. Northern Ireland has its own separate rail network, reached by ferry or a short flight.
Advance fares are a fraction of walk-up prices on UK trains, and they release around 12 weeks before travel, so booking early is the single biggest saving available. You can compare train and coach fares across operators in one search. For the parts that trains do not reach, the Highlands, mid-Wales, the Northumberland coast and most of Northern Ireland, compare rental car rates once your dates are fixed, and remember that all four countries drive on the left.
All our United Kingdom posts
Everything we have written about the UK is listed below, grouped by country.
England
- Things to do in Hyde Park, London
- Things to do in the Paddington area of London
- The best places to have tea in London
- Review: afternoon tea at The Rubens at the Palace
- Ruby Lucy Hotel London review
- Canary Wharf and Greenwich
- Visiting Windsor Castle
- 10 things to do in Tynemouth
- Fun things to do in Newcastle on a weekend getaway
- Scouting Dorset photography locations
- Everything you need to know about the Boardmasters festival
- Trip to England guide
Scotland
Wales
- Wales holidays guide
- St Davids, the smallest city in Great Britain
- Hiking the Pembrokeshire Coastal Path
- 24 hours in Cardiff
If you already live in the UK
A domestic break covers a lot of ground in a country this varied, and the UK has an unusually good range of it: national parks, coastal towns, historic houses and city weekends all within a few hours of most people. There is a wide choice of staycation holidays across all four countries if you want the landscape and the buildings without the airport.
For a break in the other direction, Southampton is Britain’s main cruise port and sails to the Mediterranean, Norway, the Canaries and across the Atlantic. A range of cruises from Southampton leaves from there through most of the year.
United Kingdom FAQ
What countries make up the United Kingdom?
The United Kingdom is made up of four countries: England, Scotland, Wales and Northern Ireland. All four share one passport, one currency and one foreign policy, and three of the four have their own devolved parliament.
What is the difference between the UK and Great Britain?
The UK is a sovereign state and Great Britain is an island. Great Britain covers England, Scotland and Wales; the UK covers those three plus Northern Ireland and the surrounding smaller islands. Northern Ireland is in the UK but not in Great Britain.
Is Ireland part of the United Kingdom?
Northern Ireland is part of the United Kingdom; the Republic of Ireland is an independent country and is not. The island of Ireland contains both. A reference to “Ireland” can mean either, so check which is meant before booking travel.
Does England have its own parliament?
England has no devolved parliament. Scotland has the Scottish Parliament, Wales has the Senedd and Northern Ireland has the Northern Ireland Assembly, while England is legislated for directly by the UK Parliament at Westminster.
Do you need a separate visa for Scotland or Wales?
You do not. The UK has one immigration system covering all four countries, so a UK visa or an Electronic Travel Authorisation is valid throughout. There is no border check when you cross from England into Scotland or Wales.
How many days do you need in the United Kingdom?
Two weeks covers London plus one other country properly, which is the shape most first UK trips should take. A week covers one country. Trying to see all four in a week means seeing four airports and four station concourses.
WonderfulWanderings Pro Tips
The 4 tips below come from checking the constitutional and practical detail on this page in 2026, and each corrects something most UK guides get wrong.
- England has no parliament of its own. Scotland, Wales and Northern Ireland each have one; England is governed directly from Westminster. Guides that say “all four have their own parliaments” are wrong, and the difference explains why laws change when you cross an invisible border.
- Barbados is no longer a Commonwealth realm. It became a republic on 30 November 2021, which took the count from 16 to 15. Any list that still names it has not been updated in five years.
- The default speed limit changes when you drive into Wales. Restricted roads in Wales have been 20 mph since September 2023, against 30 mph in England. The border is not signed for it and cameras enforce it.
- Book UK train tickets about 12 weeks out. Advance fares release roughly 12 weeks before travel and a walk-up ticket on the same train can cost three or four times as much, which is a bigger swing than any other travel decision in Britain.
About the author. This guide is written and maintained by the Wonderful Wanderings editorial team. Wonderful Wanderings was founded in 2012 by Sofie Couwenbergh, and the first-hand UK material on this site comes from her own trips to London, Windsor, Newcastle, Tynemouth, Newquay, Cardiff, St Davids and the Pembrokeshire coast, and from her father’s trips to Scotland. The team covers the United Kingdom for independent travellers, including the hotels, cottages, rail fares, car hire and castles worth booking, and updates this page when the constitutional and practical details change.