As a result of her work for the National Youth Theatre, Mirren was invited to join the Royal Shakespeare Company (RSC). While with the RSC, she played Castiza in Trevor Nunn's 1966 staging of "The Revenger's Tragedy", Diana in "All's Well That Ends Well" (1967), Cressida in "Troilus and Cressida" (1968), Rosalind in "As You Like It" (1968), Julia in "The Two Gentlemen of Verona" (1970), Tatiana in Gorky's "Enemies" at the Aldwych (1971), and the title role in "Miss Julie" at The Other Place (1971). She also appeared in four productions, directed by Braham Murray for Century Theatre at the University Theatre in Manchester, between 1965 and 1967.