In 1963
Laurence Olivier became the British
Royal National Theatre's first artistic director and started looking for a literary adviser. Tynan recommended himself for the role. Olivier, possibly fearing Tynan's critical savagery in the face of disappointment, accepted, and Tynan left
The Observer to become the National Theatre's full-time literary manager. Tynan's marriage ended in divorce the following year.
At the National Theatre Tynan established for himself a global reputation, Johnson wrote: "Indeed at times in the 1960s he probably had more influence than anyone else in world theatre."
On
13 November 1965, during a live TV debate, broadcast as part of the
BBC's late-night satirical show
BBC3, Tynan, commenting on the subject of censorship, said "
I doubt if there are any rational people to whom the word 'fuck' would be particularly diabolical, revolting or totally forbidden." This was the first time the word "fuck" had been spoken on British television. Johnson later called Tynan's use of the word "his masterpiece of calculated self-publicity", adding "for a time it made him the most notorious man in the country".
In response to public outcry, the BBC was forced to issue a formal apology. The
House of Commons signed four separate censuring motions signed by 133
Labour Party and
Tory backbenchers. Mary Whitehouse, a frequent critic of the BBC over issues of "morals and decency," wrote a letter to the
Queen, suggesting that Tynan should be reprimanded by having "his bottom spanked." The irony of Whitehouse's comment has been noted, given the later revelations of Tynan's fetish for
flagellationhttp://www.guardian.co.uk/g2/story/0,3604,1141094,00.html. The episode further encouraged Whitehouse in her campaign against the BBC; it also cut short Tynan's television career. Comedian
Billy Connolly would later commemorate this event in his song "A Four-Letter Word."
The controversy was part of a larger, longstanding aim of Tynan's "of breaking down linguistic inhibitions on the stage and in print. No one in Britain played a bigger role in destroying the old system of censorship, formal and informal." In 1960 "after much maneuvering", Tynan got a four-letter word into
The Observer'; his organization of
Oh! Calcutta! in 1969 was another important victory in that campaign. Tynan was fiercely against
censorship and was determined to break taboos that he considered arbitrary.
By 1967 his career had suffered further. His left-wing tendencies, his lifestyle, and his failing health made him something of a poster boy for
Sixties decadence in London. After Tynan's divorce he persuaded
Kathleen Halton, daughter of famed wartime CBC correspondent
Matthew Halton and sister of contemporary CBC journalist
David Halton, to leave her husband and live with him. On June 30, 1967, before a New York Justice of the Peace, he married a 6 month pregnant Halton, with
Marlene Dietrich as witness. During the ceremony, Dietrich backed towards some doors to close them; the judge interrupted his oration, and without change in tone or pace said: "And do you, Kenneth, take Kathleen for your lawful-wedded--I wouldn't stand with your ass to an open door in
this office lady--wife to have and to hold?"
Halton gave up her career to support Tynan politically and socially. Her writing fell by the wayside during these years as the Tynan home became something of a focus for left-wing personalities in London.
The erotic revue he wrote called
Oh! Calcutta! debuted in
1969 and became one of the most successful theatre hits of all time. It consisted of scenes written by various authors, including
Samuel Beckett, John Lennon, and
Edna O'Brien as well as music, and featured frequent nudity. Tynan was a poor businessman, however, and the contracts he signed for the show only brought him in a total of $250,000 out of the many millions it earned.
Tynan also co-wrote with
Roman Polanski the script of an unusually grim and violent screen adaptation of
Macbeth in
1971. In that same year he returned to his childhood habit of keeping a journal, detailing his last few months at the
Royal National Theatre, which he left in
1972.