When you've got a serious chocolate craving, sometimes even a normal sized Mars bar isn't enough.

If you're someone who is left wanting more after tucking into the sweet treat then we've got some bad news to break to you - they could get even smaller.

Under fear of companies being named and shamed in government documents, Mars bars, Kit Kits and Dairy Milks all look set to lose some of their size.

In a bid by the Government to combat child obesity, some of the biggest chocolate manufactures are said to be reducing their products by 20 per cent - almost a quarter.

Big names such as Mars, Nestlé and Mondelez - (the American company which owns Cadbury) could all be altering their products to avoid being highlighted in a new report by Public Health England (PHE), according to the Sunday Times.

Several other firms are under pressure to dramatically reduce the amount of sugar in their products.

While high-sugar items such as fizzy drinks, breakfast cereal and yoghurt can be reformulated with artificial sweeteners, it's potentially bad news for chocolate makers and lovers alike, with the former claiming sweeteners will alter the taste of the chocolate.

What it means for the price of the products effected remains to be seen.

Manufacturers have met with PHE to start discussion about proposed cuts, but there's no word on whether prices will be slashed accordingly.