She is best known for playing the leading female role of Scaramouche in the original West End production of the Queen jukebox musical We Will Rock You.
[2] Fox's first professional role after graduating was Columbia in The Rocky Horror Show (1997) at The English Theatre Frankfurt, Germany.
[3] She then joined the original London productions of Rent (1998) at the Shaftesbury Theatre, understudying Maureen,[4] and Taboo (2002) at The Venue, playing Virus.
[6] Fox also played the title role in Hackney Empire's Dick Whittington (2008), the Wicked Queen in Snow White and the Seven Dwarves at the Gordon Craig Theatre (winning Best Female Villain at the 2019 Pantomime Awards), Twiggy's mother in Close Up: The Twiggy Musical at the Menier Chocolate Factory (2023), and Felicia Taylor in Kathy and Stella Solve a Murder!
She has also appeared in several television series created by We Will Rock You writer Ben Elton, including the roles of Vicky in Blessed (2005), Cheryl in The Wright Way (2013), and Mrs. Scratchit in Upstart Crow (2018).