In this paper I examine changes in men and women’s attitudes to sexual morality across nations and time. First, I use time-series data from British Social Attitudes and the General Social Survey of the United States to examine to what extent there has been a revolution in sexual attitudes and whether the change in attitudes has continued through to the 1990s. In particular, I investigate whether changes in permissiveness are mainly due to period effects or to cohort replacement. I also compare the trajectory and pace of change in the two countries. Second, I use data from the International Social Survey Programme to compare British and American attitudes with those of four other nations with very different socio-political and religious traditions – Ireland, Germany, Sweden and Poland. With the exception of attitudes to pre-marital sex, attitudes have not changed very dramatically over the past few decades. Attitudes towards homosexuality are becoming slowly more tolerant, especially among women, but condemnation of extra-marital sex has remained high. Religion plays an important role in explaining both within and cross-national variations in attitudes and provides a powerful counterbalance to permissive trends. I conclude that change has not been as revolutionary as is often claimed and the demise of traditional values is over-stated.