I could not disagree more Gromit. Health warnings on packets, public warnings on TV etc about the dangers of smoking, coupled with increasing the price of tobacco, changing cultural attitudes to smoking, banning smoking in offices, pubs, clubs etc have hugely effected the numbers of people smoking - now at an all-time low. and on a downward trend still.
So labelling can have some valuje. Education about food groups, the dangers of obesity etc all will play their part in improving the health of the nation.
That is not to say the pressure should not be maintained on manufacturers to further reduce levels of fat, salt and sugar in their pre-prepared meals, and although there has been some improvements with a voluntary code of conduct, extending the leglslation around maximum quantities of such food components in childrens foods would make sense and speed up the pace of change to healthier options for pre-prepared meals. In the meanwhile, a simple and easy to use labelling system, like the traffic light system, can aid the public in improving food selection.