Number,Party,Title,From,To
71,Conservative,Margaret Thatcher,1979-05-04,1990-11-28
72,Conservative,John Major,1990-11-28,1997-05-02
73,Labour,Tony Blair,1997-05-02,2007-06-27
74,Labour,Gordon Brown,2007-06-27,2010-05-11
75,Conservative,David Cameron,2010-05-11,2016-07-13
76,Conservative,Theresa May,2016-07-13,2019-07-24
77,Conservative,Boris Johnson,2019-07-24,2022-07-07