The Action on Smoking and Health charity (ASH UK) carry out annual reports, starting from 2010, examining the use of electronic cigarettes in the UK. From 2013 the survey was expanded to include children and teenagers. The most recent report was released last week, 24th April 2014.
The research was carried out using YouGov and the sample size was extrapolated to indicate the picture of national habits, opinions and behavioral trends. A total of 14,447 people were surveyed.