The "worst offender" identified was the Smoked Chicken Caesar Club sold by upmarket cafe chain Gail’s, which contained a "staggering" 6.88g of salt. This amount is equivalent to nearly 10 rashers of bacon or five McDonald’s cheeseburgers. UK health guidelines recommend adults consume no more than 6g of salt a day – roughly one level teaspoon.

Furthermore, this sandwich also packed 1,067 calories and 90 per cent of an adult’s maximum daily saturated fat limit, while providing only 20 per cent of the recommended fibre intake.