The Iron Lady is a 2011 British biographical film based on the life of Margaret Thatcher (1925–2013), the 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, is portrayed by Jim Broadbent, and by Harry Lloyd as the younger Denis. Thatcher's longest-serving cabinet member and eventual deputy, Geoffrey Howe, is portrayed by Anthony Head.