The Wimbledon Effect is a chiefly British and Japanese analogy, which possibly originated in Japan, that compares the tennis fame of the Wimbledon Championships with the economic success of the United Kingdom's financial services industries – especially those clustered in the City of London.

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.