United Kingdom: Heads of State: 1801-2024 - Archontology
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United Kingdom: Heads of State: 1801-2024

All Heads of State in the following index are also Heads of State in other realms and territories.
By the Grace of God, of the United Kingdom of Great Britain and Ireland King, Defender of the Faith
1 Jan 1801 - 29 Jan 1820 George III [1]
29 Jan 1820 - 26 Jun 1830 George IV
26 Jun 1830 - 20 Jun 1837 William IV
By the Grace of God, of the United Kingdom of Great Britain and Ireland Queen, Defender of the Faith
20 Jun 1837 - 28 Apr 1876 Victoria
By the Grace of God, of the United Kingdom of Great Britain and Ireland Queen, Defender of the Faith, Empress of India
28 Apr 1876 - 22 Jan 1901 Victoria 
By the Grace of God, of the United Kingdom of Great Britain and Ireland King, Defender of the Faith, Emperor of India
22 Jan 1901 - 4 Nov 1901 Edward VII
By the Grace of God of the United Kingdom of Great Britain and Ireland and of the British Dominions beyond the Seas King, Defender of the Faith, Emperor of India
4 Nov 1901 - 6 May 1910 Edward VII 
6 May 1910 - 13 May 1927 George V
By the Grace of God of Great Britain, Ireland and the British Dominions beyond the Seas King, Defender of the Faith, Emperor of India
13 May 1927 - 20 Jan 1936 George V 
20 Jan 1936 - 11 Dec 1936 Edward VIII
11 Dec 1936 - 22 Jun 1948 George VI
By the Grace of God of Great Britain, Ireland and the British Dominions beyond the Seas King, Defender of the Faith
22 Jun 1948 - 6 Feb 1952 George VI 
By the Grace of God of Great Britain, Ireland and the British Dominions beyond the Seas Queen, Defender of the Faith
6 Feb 1952 - 29 May 1953 Elizabeth II
By the Grace of God of the United Kingdom of Great Britain and Northern Ireland and of Her other Realms and Territories Queen, Head of the Commonwealth, Defender of the Faith
29 May 1953 - 8 Sep 2022 Elizabeth II 
By the Grace of God of the United Kingdom of Great Britain and Northern Ireland and of His other Realms and Territories King, Head of the Commonwealth, Defender of the Faith
8 Sep 2022 - Charles III

[1] Regent of the United Kingdom of Great Britain and Ireland
6 Feb 1811 - 29 Jan 1820 George Prince of Wales (= George IV)