Breakfast cereals high in sugar, salt and fat have been named by the Consumers' Association.

As it campaigns to tackle obesity and improve food labelling, the watchdog checked 100 varieties and said that 85 exceeded Food Standards Agency guidelines for sugar and fat content.

The CA suggested that among the worst offenders were cereals aimed at children.

The CA has called for a “traffic light” labelling system so that manufacturers could label their products green, amber or red, depending on fat, salt and sugar levels.

The Food and Drink Federation said the industry had reduced sodium levels in cereals by 16% since 1998 and expects that new products will continue the trend.