Shirley, Lady Porter (née Cohen; born 29 November 1930), styled between 1991 and 2003 as Dame Shirley Porter, is a British politician who led Westminster City Council in London, representing the Conservative Party. She is the daughter and heiress of Sir Jack Cohen, the founder of Tesco supermarkets. She was appointed Dame Commander of the Order of the British Empire in 1991 by John Major after delivering victory in Westminster for the Conservatives in the 1990 elections, but was stripped of this title in 2003.