Background
McCormack was born in Epsom, Surrey, England. Her mother died of lupus when McCormack was six years old, and her steelworker father subsequently raised her and her brother Stephen.
McCormack was born in Epsom, Surrey, England. Her mother died of lupus when McCormack was six years old, and her steelworker father subsequently raised her and her brother Stephen.
She was brought up in the Roman Catholic religion (though is now a "lapsed Catholic") and attended the Convent of Our Lady of Providence.
Her film appearances include Braveheart (1995), The Land Girls (1998), Dangerous Beauty (1998), Dancing at Lughnasa (1998), Spy Game (2001), and 28 Weeks Later (2007). Her theatre work includes National productions of All My Sons (2000) and Honour (2003). She then went on to study at the Oxford School of Drama.
In 2008, she performed the role of Nora in A Doll"s House, directed by Peter Hall at the Royal, Bath, and also the role of Isabel Archer in a stage adaptation of The Portrait of a Lady, both of which commenced their runs in July 2008, ending in August, before transferring to the Rose in Kingston later that year.