All Cadbury chocolate bars sold in multiple packs will decrease by the end of 2021 to reduce their calories, owner Mondelez said.
Popular treats, including Crunchie, Twirl and Wispa bars, will contain no more than 200 calories each when sold in a four-pack.
However, the price will remain the same. Bars sold individually will not change.
Chocolate lovers have gone to Twitter to expose the latest example of what has become known as “shrinking.”
This is when food manufacturers reduce the weight of their products without reducing the price.
“We must play our part in the fight against obesity and we are committed to doing so without compromising consumer choice,” said Louise Stigant, British general manager of Mondelez International.
When asked why “one-serve” bars were not affected, a Mondelez spokesperson said the company believed in “offering consumers different serving sizes for different occasions”.
The spokesperson confirmed that the list price for multipacks will not change and that prices will remain with retailers.
“Profit or health?
Consumers were skeptical, with a tweet that Cadbury should change the name of his Double Decker bar to Minibus.
“Cadbury is trying to say that the change is for health reasons when it seems painfully obvious that these are profit margins,” said another disgruntled client.
It is not the first time that Mondelez has encountered opposition after changing the size of its chocolate bars.
In 2016, he reduced the weight of his Toblerone bar from 200 g to 150 g by spacing out his distinctive triangular pieces, but he reversed the change two years later.