Peter Edward Cook was an English comedian, actor, satirist, playwright and screenwriter. He was the leading figure of the British satire boom of the 1960s, and he was associated with the anti-establishment comedic movement that emerged in the United Kingdom in the late 1950s.

An anti-establishment view or belief is one which stands in opposition to the conventional social, political, and economic principles of a society. The term was first used in the modern sense in 1958, by the British magazine New Statesman to refer to its political and social agenda. Antiestablishmentarianism is an expression for such a political philosophy. Anti-establishment positions vary depending on political orientation. For example, during the protests of 1968, anti-establishment positions generally emerged from left-wing, socialist, and anarchist circles. In the 2010s however, anti-establishment positions generally emerged from right-wing populist circles.