Data from the General Household Survey (GHS) for the period 1984-1988 and data from the RUHBC-CATI (Research Unit in Health and Behavioural Change - Computer Assisted Telephone Interview) survey for the period 1988 to 1991 are pooled to study changes in the cigarette smoking prevalence in Scotland. It is concluded that the Scottish smoking prevalence shows a slight downward trend for males and a slight upward trend for females. There is some evidence for an earlier decrease in smoking prevalence related to a lower smoking uptake among younger generations, however, the current pattern of smoking among the youngest age group shows an increase. The reported difference in smoking prevalence between those in manual and non-manual occupations seems to be increasing among females and decreasing among males.