The Nutrition Information Initiative, launched last year, put detailed labels on McDonald's packaging with data on calories, protein, fat, carbohydrates and salt content.
Eddie Gershon, spokesman for restaurant JD Wetherspoon, said they were open and honest with their customers about the salt content of their meals.
Gordon Polson, director of the Federation of Bakers, said the industry had been making improvements in recent years - salt content had been reduced by 10% since 2005.
In the case of Warburton's, the UK's second-largest grocery brand, 15 out of 18 of its breads that were surveyed had a salt content higher than the FSA target, whereas all of the Sainsbury's and Waitrose breads surveyed were below the FSA target.
They also help reduce the traditionally high salt and sugar content of aeroplane meals.
In September, Hungary will introduce a tax on pre-packaged foods containing high salt and sugar content, such as crisps and chocolates.
Firms have signed up to a series of pledges to reduce the salt, sugar and fat content of food and to pursue more responsible marketing initiatives.
The company will spend the next year reassessing salt, fat and sugar content in every one of its products, says Gert W. Meijer, head of Unilever's health institute.
The metadata is like the salt that helps to preserve the content for reuse in the future.
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T. janitor with a lengthy police record, Will is perfectly content carousing his life away with his buddies in this salt-of-the-earth milieu.
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If the label gives the sodium content, multiply by 2.5 to get the amount of salt.
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