The noble Lord makes some important ports. He has highlighted the fact that many products on sale are of, shall we say, variable quality. There are risks around the extent to which the dose of nicotine delivered varies; the quality of the ingredients can be suspect; and there is a question mark over the electrical safety of some products. We cannot make a general statement about products that are currently on sale. Nevertheless, it is right that the European Union has taken this matter in hand. From May 2016, only licensed e-cigarettes will be able to contain nicotine in strengths greater than 20 milligrams per millilitre. That will introduce some standardisation.