Leon Brittan, Baron Brittan of Spennithorne, PC, QC, DL (25 September 1939 – 21 January 2015) was a British Conservative politician and barrister who served as a European Commissioner from 1989 to 1999. As a member of Parliament from 1974 to 1988, he served several ministerial roles in Margaret Thatcher's government, including Home Secretary from 1983 to 1985.