Source: Office for National Statistics: Adult smoking habits in Great Britain and E-cigarette use in Great Britain

Notes:

• The chart shows the percentage of current cigarette smokers and the percentage of current e-cigarette smokers, by sex, aged 16 and over in Great Britain from 1974 to 2004 in fiscal years and from 2005 to 2019 in calendar years.
• Data for the proportion of current cigarette smokers was collected on a 2-yearly basis prior to 2000. In addition, the data are only weighted from 2000 onwards. Estimates for 2004 and 2005 both include the period 1 January 2005 to 31 March 2005 because of a change in survey period from fiscal year to calendar year.
• Data for the proportion of current e-cigarette smokers is weighted. From 2018 the survey question used to measure e-cigarette use changed. In addition, from 2018 ex-vapers only includes those who vaped regularly; previously this group also included those who vaped occasionally. However, it is noted that data for ‘current e-cigarette users’ is comparable across the entire time series (2014 – 2019).

For further detail on methodology access the ONS Adult smoking habits in Great Britain dataset and the ONS E-cigarette use in Great Britain dataset