My Lords, e-cigarettes are undoubtedly helpful to some people in enabling them to cut down on, or quit, smoking. The evidence is encouraging and we would not want to stop smokers trying out e-cigarettes as an alternative, particularly if other remedies have failed. Equally, we need to be cautious as regards the long-term health effects of using e-cigarettes. That is why the Chief Medical Officer is currently not able to recommend their use.