The use of electronic 'E-cigarettes' has tripled over the last two years, with over 2 million Britons now regularly smoking them.
Health charity ASH released figures showing a rise from 700,000 in 2012 to 2.1 million this year.
The group said two thirds of e-cigarette smokers still smoke normal cigarettes, while the remaining third were former smokers.
More top news
The Olympic champion released a statement after a newspaper alleged his American coach may have broken anti-doping rules.
Storm Ewan gives a wet and windy end to the weekend across many northern and western areas.
The Home Secretary said the Government is "against cliff edges" and immigration figures will not suddenly fall when the UK leaves the EU.