1 | 1901 | - 22 Jan 1901—6 May 1910: Edward VII
Reign of King Edward VII
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2 | 1910 | - 6 May 1910—20 Jan 1936: George V
Reign of King George V
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3 | 1914 | - 4 Aug 1914—11 Nov 1918: World War 1
Duration of World War One
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4 | 1936 | - 20 Jan 1936—11 Dec 1936: Edward VIII
Reign of King Edward VIII
- 11 Dec 1936—6 Feb 1952: George VI
Reign of King George VI
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5 | 1939 | - 3 Sep 1939—8 May 1945: World War 2
Duration of World War Two in Europe.
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6 | 1941 | - 7 Dec 1941—15 Aug 1945: World War 2 inc. Japan
Duration of World War Two including Japan.
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7 | 1952 | - 6 Feb 1952—8 Sep 2022: Elizabeth II
Reign of Queen Elizabeth II
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