Office for National Statistics (Opinions and Lifestyle Survey, General Lifestyle Survey and General Household Survey)
All persons aged 16 and over
Smoking data prior to 1974 from Wald, N. and Nicolaides-Bouman, A. (1991) UK Smoking Statistics. 2nd edition, Oxford University Press.
(1974 to 1998 data unweighted, 1998 to 2018 weighted)