Big Bang (financial markets)
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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.