She graduated from the Royal Academy of Dramatic Art in London with classmates Clive Owen and Liza Tarbuck.

She released the album The Raven in 1994, followed by The New York Girls' Club (1996), and The Four Marys (1998), a collection of traditional Celtic folk songs.

[7] Pidgeon has had roles in additional Mamet films, including The Spanish Prisoner (1997), The Winslow Boy (1999), State and Main (2000), Heist (2001) and Redbelt (2008).

In the 2013 television movie Phil Spector, she played a supporting role and also sang "Spanish Harlem" over the closing credits.

[7] Pidgeon is married to American writer and director David Mamet, whom she met while appearing in his play Speed-the-Plow at the National Theatre, London.