Shadow Secretary of State for Defence in the context of "Iain Duncan Smith"

John Enoch Powell (16 June 1912 – 8 February 1998) was a British politician, scholar and writer. He was Member of Parliament (MP) for Wolverhampton South West for the Conservative Party from 1950 to February 1974 and 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.

Before entering politics, Powell was a classical scholar; in 1937 he was appointed Professor of Greek at the University of Sydney, aged only 25. He served in the British Army during the Second World War, reaching the rank of brigadier. He wrote both poetry and books on classical and political subjects. He is remembered particularly for his views on immigration and demographic change. In 1968 Powell attracted attention nationwide for his "Rivers of Blood" speech, in which he criticised immigration to Britain, especially the rapid influx from the Commonwealth of Nations (former colonies of the British Empire) in the post-war era. He opposed the Race Relations Bill, a major anti-discrimination bill which ultimately became law. His speech was criticised by some of his own party members and The Times as racialist. Heath, who was then the leader of the Conservative Party and the leader of the Opposition, dismissed Powell from the Shadow Cabinet the day after the speech. In the aftermath several polls suggested that between 67 and 82 per cent of the British population agreed with Powell.