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A Parliament period is the time period of a single Parliament between the date of its first assembly after a general election and the dissolution of that Parliament. Parliament periods are the same in both Houses. Parliaments of the United Kingdom are numbered ordinally from the first Parliament, sitting in 1801. A general election is held 25 days after a dissolution, excluding weekends or bank holidays.

Parliament period Summoned on Dissolved on
59 9 July 2024 -
58 17 December 2019 30 May 2024
57 13 June 2017 5 November 2019
56 18 May 2015 3 May 2017
55 18 May 2010 30 March 2015
54 11 May 2005 12 April 2010
53 13 June 2001 11 April 2005
52 7 May 1997 14 May 2001
51 27 April 1992 8 April 1997
50 17 June 1987 16 March 1992
49 15 June 1983 18 May 1987
48 9 May 1979 13 May 1983
47 22 October 1974 7 April 1979
46 6 March 1974 20 September 1974
45 29 June 1970 8 February 1974
44 18 April 1966 29 May 1970
43 27 October 1964 10 March 1966
42 20 October 1959 25 September 1964
41 7 June 1955 18 September 1959
40 31 October 1951 6 May 1955
39 1 March 1950 5 October 1951
38 1 August 1945 3 February 1950
37 26 November 1935 15 June 1945
36 3 November 1931 25 October 1935
35 25 June 1929 7 October 1931
34 2 December 1924 10 May 1929
33 8 January 1924 9 October 1924
32 20 November 1922 16 November 1923
31 4 February 1919 26 October 1922
30 31 January 1911 25 November 1918
29 15 February 1910 28 November 1910
28 13 February 1906 10 January 1910
27 3 December 1900 8 January 1906
26 12 August 1895 17 September 1900
25 4 August 1892 8 July 1895
24 5 August 1886 28 June 1892
23 12 January 1886 26 June 1886
22 29 April 1880 18 November 1885
21 5 March 1874 24 March 1880
20 10 December 1868 26 January 1874
19 1 February 1866 11 November 1868
18 31 May 1859 6 July 1865
17 30 April 1857 23 April 1859
16 4 November 1852 21 March 1857
15 18 November 1847 1 July 1852
14 19 August 1841 23 July 1847
13 15 November 1837 23 June 1841
12 19 February 1835 17 July 1837
11 29 January 1833 29 December 1834
10 14 June 1831 3 December 1832
9 26 October 1830 23 April 1831
8 14 November 1826 24 July 1830
7 21 April 1820 2 June 1826
6 14 January 1819 29 February 1820
5 24 November 1812 10 June 1818
4 22 June 1807 29 September 1812
3 15 December 1806 29 April 1807
2 16 November 1802 24 October 1806
1 22 January 1801 29 June 1802

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