Watch Margaret Thatcher: The Iron Lady (2012) : Full Movie Online Free Margaret Thatcher - The Iron Lady is the first major documentary to look back on the development and impact of this remarkable woman, whom commentators of both the political left and right agree changed the face of 20th Century politics forever. Featuring many excerpts from her powerful speeches and insightful contributions from her political supporters and detractors, a portrait emerges of a woman whose strength of conviction eventually becomes the weakness of intransigence.