27/10/1986 The British government suddenly deregulates financial markets
The 'Big Bang' : Brexit's impact on UK's financial markets | IG
News report on the Stock Exchange 'big bang'
What was the 'big bang'? - MoneyWeek Investment Tutorials
The Big Bang was the result of an agreement by government of Margaret Thatcher and the London Stock Exchange to settle an anti-trust case that was initiated during the previous government. The Big Bang led to important changes to the structure of the financial markets in London.