I think it's a very important point. Most food still in the U.K. is consumed in the home rather than at school. Children now are able to get very palatable food prepared very quickly in relatively large proportions. They can take a pizza out of the fridge, put it in the microwave, and eat it quite quickly.
I think one of the real difficulties is about loss of food skills amongst children, about knowing how to cook and prepare food. That makes them more dependent on ready-prepared food, which quite often tends to be sold in larger portions as easier to prepare. Particularly, people in low-income groups may also lack not only the skills but the facilities to prepare fresh food.
The other factor that is very important is not eating together. Eating together puts some food restraint on families, if you take time to eat together. We say families who eat together stay together. There is that as a factor, and it is quite important. If both parents are out at eating time and the child, who is what we call a latch-door child, comes home and is hungry, he or she will get what is convenient. On a low income, you're going to buy the best value you can get, so if it's “buy one, get one free”, it may well be a food that is relatively calorie-rich. That, potentially, is a problem.
How you address that to people on low incomes.... They actually are making the best use of their money, if they're short on income, but it's a question of what they're trading it off for in the rest of their lifestyle.
Portion sizing and food skills, I would say, are something one needs to inculcate in young people—actually how to prepare food and enjoy cooking.