State · 1927 – present
United Kingdom
A state of 1927 – present — 99 years, still standing in Europe. It replaced United Kingdom of Great Britain and Ireland. The atlas records 343 things within it — wars and battles 29 · unrest and atrocity 23 · famine and plague 10 · natural disasters 1 · treaties 14 · people 249 · works and ideas 17. Its line of rulers holds 5 people.
- Still standing: the span runs to the year of the build, 2026.
For the full story, the article on Wikipedia (CC BY-SA 4.0); this page holds what the record says of the state.
- Stood
- 99 years
- and still standing
- Rulers
- 5
- the Monarch of the United Kingdom
- Most ground
- 1.01 million km²
- in 1956
- Within it
- 343
- recorded rows
- Symbols
- 7
- on record, with years
1956 · at its largest · 1.01 million km²
2024 · last mapped · 265,300 km²
Where it sits in time
Five thousand years, 3000 BCE to 2026; the state in gold, what it replaced or followed and what replaced or followed it in grey.
Before and after
The states the record files it as replacing or following, and those that replaced or followed it - Wikidata's own statements, each read from this state's side.
Before it
- United Kingdom of Great Britain and Ireland · replaces · 1801 – 1927
Rulers
The line of Monarch of the United Kingdom - the office this state names as its head of state.
| Ruler | Reign | Length | How it ended · source | To the ruler before |
|---|---|---|---|---|
| George V | 1927 – 1936 | 9 years | died by suicideWikidata's manner of death | |
| Edward VIII | 1936 – 1936 | under a year | abdicatedWikidata's end cause on the term | child |
| George VI | 1936 – 1952 | 16 years | died in office of natural causesWikidata's manner of death | sibling |
| Elizabeth II | 1952 – 2022 | 70 years | died in office, manner not recordedread off the dates alone | child |
| Charles III | 2022 – in office | in office since 2022 | still in office | child |
5 rulers, 5 with terms dated as terms, covering 1927 – 2022. Median reign 12.5 years. 3 of 4 handovers irregular - a killing, a deposition, a rival claimant, a rising or a coup beside it. A blank in the last column means no kin on record, which is coverage, never “unrelated”.
Heads of government
The line of Prime Minister of the United Kingdom, drawn and never measured: a cabinet is not a reign.
| Harriet Jones | undated |
| Francis Urquhart | undated |
| Jim Hacker | undated |
| Judge McGruder | undated |
| David Lloyd George | 1916 – 1922 |
| Bonar Law | 1922 – 1923 |
| Stanley Baldwin | 1924 – 1929 |
| Ramsay MacDonald | 1924 – 1924 |
| Ramsay MacDonald | 1929 – 1935 |
| Stanley Baldwin | 1935 – 1937 |
| Neville Chamberlain | 1937 – 1940 |
| Winston Churchill | 1940 – 1945 |
| Clement Attlee | 1945 – 1951 |
| Winston Churchill | 1951 – 1955 |
| Anthony Eden | 1955 – 1957 |
| Harold Macmillan | 1957 – 1963 |
| Alec Douglas-Home | 1963 – 1964 |
| Harold Wilson | 1964 – 1970 |
| Edward Heath | 1970 – 1974 |
| Harold Wilson | 1974 – 1976 |
| James Callaghan | 1976 – 1979 |
| Margaret Thatcher | 1979 – 1990 |
| John Major | 1990 – 1997 |
| Tony Blair | 1997 – 2007 |
| Gordon Brown | 2007 – 2010 |
| David Cameron | 2010 – 2016 |
| Theresa May | 2016 – 2019 |
| Boris Johnson | 2019 – 2022 |
| Rishi Sunak | 2022 – 2024 |
| Liz Truss | 2022 – 2022 |
| Keir Starmer | 2024 – 2026 |
| Andy Burnham | 2026 – … |
Ground held, by year
km² inside its borders as the borders dataset draws them, measured on an equal-area grid; a step series, held between the years the dataset maps.
673,700 km² in 1927, 671,900 km² in 2017; at its largest 1.01 million km² in 1957. Cliopatria, CC BY 4.0.
Flags and arms, in order
Each symbol with the years its own statement gives; the timeline flies the one of the year on screen.
.svg/120px-Coat_of_arms_of_the_United_Kingdom_(1901%E2%80%931952).svg.png)
coat of arms, undatedCoat of arms of the United Kingdom (1901–1952) · CC BY-SA 3.0 · Sodacan .svg/120px-Coat_of_Arms_of_the_United_Kingdom_in_Scotland_(1837-1952).svg.png)
coat of arms, to 1952Coat of Arms of the United Kingdom in Scotland (1837-1952) · CC BY-SA 3.0 · Sodacan 
coat of arms, undatedCoat of arms of the United Kingdom in Scotland · CC BY-SA 3.0 .svg/120px-Flag_of_Great_Britain_(1707%E2%80%931800).svg.png)
flag, 1707 – 1800Flag of Great Britain (1707–1800) · Public domain .svg/120px-Flag_of_the_United_Kingdom_(1-2).svg.png)
flag, from 1801Flag of the United Kingdom (1-2) · Public domain .svg/120px-Flag_of_the_United_Kingdom_(3-5).svg.png)
flag, from 1801Flag of the United Kingdom (3-5) · Public domain .svg/120px-Coat_of_arms_of_the_United_Kingdom_(2022%2C_variant_2).svg.png)
coat of arms, from 2022Coat of arms of the United Kingdom (2022, variant 2) · CC BY-SA 4.0
What happened within it, by century
Every row the atlas hosts under this state, by the century it began in: wars and battles in red, risings, regime changes and massacres beside them, everything else in grey. A tall bar is a century the record is full for, which is partly a fact about Wikipedia.
1900 – 1999317 rows · 29 wars and battles · 15 risings, regime changes and massacres
- Elizabeth II · ruler · 1926 – 2022
- Stephen Hawking · writer · 1942 – 2018
- J. K. Rowling · writer · 1965 – present
- Charles III · ruler · 1948 – present
- Tim Berners-Lee · inventor · 1955 – present
- Tony Blair · politician · 1953 – present
- David Cameron · politician · 1966 – present
- The Lord of the Rings · literature · 1954
and 309 more in the atlas.
2000 – 209924 rows · 8 risings, regime changes and massacres
- Harry Potter and the Order of the Phoenix · literature · 2003
- Harry Potter and the Goblet of Fire · literature · 2000
- Harry Potter and the Half-Blood Prince · literature · 2005
- Manchester Arena bombing · atrocity · 2017
- 2017 London Bridge attack · atrocity · 2017
- 2011 England riots · unrest · 2011
- COVID-19 pandemic in the United Kingdom · plague · 2020
- 2024 United Kingdom riots · unrest · 2024
and 16 more in the atlas.
Among all states
Each measure against the states that carry it, never against all of them: a bar is the share of those states below this one.
- How long it stood99 years
stood longer than 46% of 3,187 states with a recorded end or still standing.
- The most ground it held1,006,200 km²
held more ground at its peak than 84% of 1,465 states with a border in Cliopatria.
- Wars recorded per century2.0
had more wars on record per century than 97% of 3,187 states, counting the wars the atlas hosts under each.
- How long a reign lasted, at the median16 years
had longer reigns, at the median, than 51% of 967 states whose dated line can carry a median.
- Rulers on record5
has more rulers on record than 64% of 1,968 states with a line of rulers.
What led to it, and what came of it
The investigation's own picture: 42 causes the record names and 0 results, the strongest six of each at their own years, joined to the state by the kind of claim - a recorded statement solid, the article's sentence dashed, a theory dash-dot.
Open the investigation: every row with its evidence, the conditions at the time, the theories condition by condition, and the succession analysed.
Open in the atlas
- On the timeline, 1917 – 2036, with everything that stood beside it.
- On the map in 1956, live: scrub the year and watch its borders move.
- Investigate it: what led to it, what came of it, and its succession analysed.
Wikidata Q145 (CC0) · borders Cliopatria, CC BY 4.0 · coast and rivers Natural Earth · symbols from Wikimedia Commons, each credited above · data built 2026-10-06 · Pastlas v2.9.1, by Oleh Voronko. The published atlas and its data are for non-commercial use.