Margaret Thatcher, Prime Minister of the United Kingdom

Margaret Hilda Thatcher, Baroness Thatcher, LG, OM, PC (born 13 October 1925), is the former Prime Minister of the United Kingdom, in office from 1979 to 1990. She was leader of the Conservative Party from 1975 until 1990. She is the only woman to have been Prime Minister of the United Kingdom. (UPI Photo)