He then went on to play starring roles in the National Theatre and the Royal Shakespeare Company, and later co-founded the Joint Stock Theatre Company in 1974, along with director Max Stafford-Clark.
Dia kemudian melanjutkan untuk memainkan peran utama dalam National Theatre dan Royal Shakespeare Company, dan kemudian mendirikan kelompok teater sendiri, the Joint Stock Theatre Company, pada tahun 1974 bersama-sama dengan sutradara Max Stafford-Clark.