I thank my hon. Friend and I would be delighted to take another look at that piece of research.
My hon. Friend the Member for Totnes has made a case for the sugar tax to protect the poorest, and I think that that was the point that she was just making. As I have mentioned, and this is a good point, the poorest children are the most likely to be obese. However, the statistics show that, in low-income households in Britain, soft drink purchases dropped by 14% between 2007 and 2013. Perhaps a 20% sugar tax on soft drinks is not very much to celebrity chefs such as Jamie Oliver and some of those who are pushing the idea of a sugar tax, but for those on the lowest incomes—who we know, proportionally, buy these products—about 12p a can or 37p per 2 litre bottle is a massive amount of money.