Fox first appeared as Georgiana, the sister of Colin Firth's Mr. Darcy, in the 1995 television adaptation of "Pride and Prejudice", followed by her role as the second Mrs. de Winter in the 1997 television adaptation of "Rebecca", opposite Charles Dance. In 1998 she starred with Ben Miles in the adaptation of Catherine Cookson's "The Round Tower" as the young Vanessa Radcliffe, a wealthy girl from an affluent family who is forced to leave her home after becoming pregnant. Fox played Jeannie Hurst in the 2000 remake of "Randall and Hopkirk".