The Iron Lady (film) in the House of Commons, Costume Design: Pearls and Power Suits, Denis: The Man Behind the Woman". The Iron Lady (film) The Iron Lady is a 2011 British-French biographical drama film based on the life and career of Margaret Thatcher (1925–2013), a British stateswoman and politician who was the first ever female and longest-serving Prime Minister of the United Kingdom of the 20th century. The film was directed by Phyllida Lloyd. Thatcher is portrayed primarily by Meryl Streep, and, in her formative and early political years, by Alexandra Roach. Thatcher's husband, Denis Thatcher (1915–2003), is portrayed by Jim Broadbent, and
Prime minister and in British colonial territories as they developed self-government. In some places alternative titles such as "premier", "chief minister", "first minister of state", "president of the council" or "chancellor" were adopted, but the essentials of the office were the same. By the late 20th century, the majority of the world's countries had a prime minister or equivalent minister, holding office under either a constitutional monarchy or a ceremonial president. The main exceptions to this system have been the United States and the presidential republics in Latin America modelled on the U.S. system, in which the president directly exercises executive authority.