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Secretary of State for Education and Science
Leader of the Opposition
Prime Minister of the United Kingdom
Policies
Appointments
Articles by ministry and term: 1979–1983
1983–1987
1987–1990
Post-premiership
Publications
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The phrase Big Bang, used in reference to the sudden deregulation of financial markets, was coined to describe measures, including abolition of fixed commission charges and of the distinction between stockjobbers and stockbrokers on the London Stock Exchange and change from open outcry to screen-based electronic trading, effected by UK Prime Minister Margaret Thatcher in 1986.