Derby South (/ˈdɑːrbi/) is a constituency formed of part of the city of Derby represented in the House of Commons of the UK Parliament since 1983 by veteran MP Margaret Beckett of the Labour Party. She has served under the Labour governments of Harold Wilson, James Callaghan, Tony Blair and Gordon Brown. She became interim Leader of the Labour Party in 1994 when John Smith suddenly died. She has also served under Neil Kinnock and Smith himself.