Having lost much support over her policy on Europe, Thatcher was finally forced to resign in 1990 during an internal leadership struggle after she introduced an unpopular tax that led to rioting in the streets.
Despite her painful exit, she remained involved in British politics for the next decade or so. She was named Baroness Thatcher of Kesteven after leaving office and served in the House of Lords.
Her wider influence on policy and politicians continues to this day.
She retired from public life after a stroke in 2002 and suffered several smaller strokes after that. Her husband, Denis, died in June 2003.