Subjects discussed in this diary include: press coverage of Mary Whitehouse, broadcasting and morality; the Three-Day Week; film Blow-Out [ La Grande Bouffe] (discussed in various entries 1 January-6 June); Cinematograph and Indecent Displays Bill; Sir Michael Swann; song Teenage Rampage [by The Sweet] (12-14 January); speaking engagements, debates and interviews; National Viewers' and Listeners' Association;…