This film, part of the Satyajit Ray season at BFI Southbank, is also being screened on August 30th. Full details here.
Chicago Reader review:
Satyajit Ray's 1966 feature comes at the tail end of his early realist period, which included most of the films (the Apu trilogy, Devi, Charulata) that won him his reputation in the West. A popular actor reveals his life to a woman journalist, whose initial cynicism turns to sympathy as she comes to understand the young man's celebrity entrapment. With Uttam Kumar and the flowering perennial of Ray's major work, Sharmila Tagore. In Begali with subtitles.
Here (and above) is the opening.