A 'posh' sandwich in the UK packs nearly as much salt as five cheeseburgers

The packaged sandwich market in the UK is a category sustained by millions of meals every year. A new audit released by the campaign group Action on Salt & Sugar found that some of the so-called "premium" sandwiches in that category contain almost the salt of five cheeseburgers in a single lunch portion.

BBC reported that the audit is based on a systematic comparison of supermarket-shelf labels. The group released the highest-salt examples it found and matched them against the daily recommended salt intake.

Action on Salt & Sugar's statement said people should not be exposed to a "hidden health risk every time they buy lunch." The group called for clearer reading of labels and a faster pace of retailer-manufacturer reformulation.

The UK's recommended adult intake of salt is six grams a day. The highest-salt sandwiches Action on Salt identified cover more than half of that limit in a single meal. The five-cheeseburger comparison, drawn from a familiar benchmark, was chosen to make the figure concrete.

The issue is the new chapter of a long-running public health debate. High salt intake is a strong risk factor for raised blood pressure and the cardiovascular conditions tied to it. The NHS has encouraged voluntary salt-reduction programmes across the industry for more than a decade.

The campaign group's report included detailed cards for the highest-salt products, with additives listed alongside salt grams. It also said the group would publish comparative data on whether the average salt level across the category's sub-segments has changed in the last five years.

Manufacturers and major supermarket chains responded by citing their own reformulation programmes. Some manufacturers also pointed to the high natural salt levels in the speciality cheeses and cured meats that define the "premium" sub-segment.

Public health specialists say Action on Salt's finding calls for shelf-level changes rather than individual meal choices. The NHS line, repeated for years, is that salt reduction depends less on label-reading and more on the product itself being made with less salt.

The UK government will examine whether voluntary salt-reduction targets, in categories where they have fallen short, should be brought into a mandatory framework in the food-policy component of the next budget cycle.

Consumer organisations have called for traffic-light salt colouring on packaged sandwich labels to be made more conspicuous. Action on Salt's report includes a data set analysing how evenly applied colouring affects consumer decisions in the premium category.