As you suggested earlier, I think banning anything, and particularly anything that's addictive, is a very dangerous route to tread. But what I would like to think is that over the next coming years, in a decade or so, we will see tobacco cigarettes priced out of affordability for the great majority of people, and made much less available. So it's not that we prohibit them. We just make the obvious choice, electronic cigarettes, or at least their successors. This is a very rapidly evolving field, and in three or five years' time, we won't be talking about the products we're talking about today.
On October 28th, 2014. See this statement in context.