After the war Travers's output declined; he had a long fallow period after the death of his wife in 1951, although he collaborated on a few revivals and adaptations of his earlier work. He returned to playwriting in 1968. He was inspired to write a new comedy in the early 1970s after the abolition of theatre censorship in Britain permitted him to write without evasion about sexual activities, one of his favourite topics. The resulting play, "The Bed Before Yesterday" (1975), presented when he was 89, was the longest-running of all his stage works, easily outplaying any of his Aldwych farces.