[citation needed] Her earliest film appearances were as the heroine in Hammer's Nightmare (1964) and Barbara in Dr. Who and the Daleks (1965).
Wishing to raise her son in England, Linden decided not to pursue a career in Hollywood.
[citation needed] She was considered for The Lion in Winter (1968) and The Go-Between (1970); the latter was for the lead role of Lady Marian Trimingham, for which Julie Christie was later cast.
[citation needed] She starred with Kenneth Williams in the theatrical production of My Fat Friend in 1972.
Also, she toured in Trevor Nunn's Royal Shakespeare Company production of Hedda Gabler for two years playing Thea Elvsted, with Glenda Jackson in the title role; they later appeared together in the 1975 film adaptation.