Findings from Action on Smoking and Health (ASH) UK suggest that vaping product use has dropped since last year from 7.1% to 6.3% among the British adult population. The proportion of current vapers who are ex-smokers continues to grow year-on-year, whereas the proportion of vapers who also smoke (dual use) fell from 40% in 2019 to 38% in 2020.

Source: https://ash.org.uk/wp-content/uploads/2020/10/Use-of-e-cigarettes-vapes-among-adults-in-Great-Britain-2020.pdf