​UK e-cigarette users reach 3.6 million

Vaping prevalence in the UK has increased in the last year according to a report from Action on Smoking and Health (ASH). The new data suggest that 7% of the adult population now vape; just under a third of whom are former smokers who used e-cigarettes to quit smoking.

Sources: https://www.independent.co.uk/news/health/vaping-britain-ecigarettes-smoking-rates-study-public-health-england-a9117461.html