Ministers during the current UK parliament have been in one post an average of eight months

Average ministerial duration by parliament, years

3

2

1

0

Feb

74

Oct

74

79

83

87

92

97

01

05

10

15

17

19

3

2

1

0

Feb

1974

Oct

1974

1979

1983

1987

1992

1997

2001

2005

2010

2015

2017

2019

Guardian graphic. Source: Strong and Stable, Make Votes Matter