Enoch Powell (pictured), a British Conservative member of Parliament, made a controversial speech in opposition to immigration and anti-discrimination legislation, resulting in his removal from the shadow cabinet.

John Enoch Powell was a British politician, scholar and writer. He served as Member of Parliament (MP) for Wolverhampton South West for the Conservative Party from 1950 to February 1974 and as the MP for South Down for the Ulster Unionist Party (UUP) from October 1974 to 1987. He was Minister of Health from 1960 to 1963 in the second Macmillan ministry and was Shadow Secretary of State for Defence from 1965 to 1968 in the Shadow Cabinet of Edward Heath.

The Conservative and Unionist Party, commonly the Conservative Party and colloquially the Tories, is one of the two main political parties in the United Kingdom, along with the Labour Party. It sits on the centre-right to right-wing of the left–right political spectrum. Following its defeat by Labour at the 2024 general election it is currently the second-largest party by the number of votes cast and number of seats in the House of Commons; as such it has the formal parliamentary role of His Majesty's Most Loyal Opposition. It encompasses various ideological factions including one-nation conservatives, Thatcherites and traditionalist conservatives. There have been 20 Conservative prime ministers.

The "Rivers of Blood" speech was made by the British politician Enoch Powell on 20 April 1968 to a meeting of the Conservative Political Centre in Birmingham. In it Powell, who was then Shadow Secretary of State for Defence in the Shadow Cabinet of Edward Heath, strongly criticised the rates of immigration from the Commonwealth of Nations to the United Kingdom since the Second World War. He also opposed the Race Relations Bill, an anti-discrimination bill which upon receiving royal assent as the Race Relations Act 1968 criminalised the refusal of housing, employment, or public services to persons on the grounds of colour, race, or ethnic or national origin. Powell himself called it "the Birmingham speech"; "Rivers of Blood" alludes to a prophecy from Virgil's Aeneid that Powell quoted:

As I look ahead, I am filled with foreboding; like the Roman, I seem to see 'the River Tiber foaming with much blood'.