Recognizing that television is not the sole media source that children are exposed to, British ministers are wondering whether a proposal that bans junk food ads on television will be effective. As a result, they are now considering whether to add restrictions to the ad content of websites, computer games, cinemas and packaging, as well as corporate school sponsorships. Such measures "could be voluntary or compulsory depending on the response of the food industry." Strict measures like these are being supported by the Labour Party and various parent groups.

The Food Standards Agency, backing the ban, has devised a "nutrient profiling system" to identify "junk foods" according to their nutritional information. It could be used to determine whether or not a food product could be advertised if a ban becomes legislation.

Ofcom, a television regular, thinks that measures like this seem too strict. A pre-9pm television ban alone would cost networks and advertisers at least £141 million, but there is not telling what the cost of essentially prohibiting "junk food" ads would be.

The traffic light system is a voluntary food labeling system devised by the British Food Standards Agency to denote with a single glance the levels of fat, saturated fat, sugar and salt in products. While not necessarily intended to let consumers know that the product is health food, it does give them a very fast, clear idea of what they are about to eat. Several supermarkets, including Waitrose and Sainsburys have adopted the program with surprising results: sales of unhealthy foods have dropped and healthier foods have increased.

Why is this working when so many other awareness campaigns have failed in the past, or enjoyed only a very limited success? It seems to be the fact that the labels are hard to ignore. Or rather, it is that they take no effort to read. A consumer doesn't have to spend time trying to decipher a nutritional label or wonder what "48% less fat!" really refers to. They don't have to draw attention to the fact that they want to know the nutritional information, which can be embarrassing for some shoppers.