French consumer magazine 60 Millions Consommateurs has launched a news-stand broadside on "concealed" price rises among major brands, which have reduced pack sizes to retain price points.

The consumer watchdog today (24 September) advised shoppers to look more closely at the price per kilo or price per litre that is also included on-pack, as required under French labelling law.

According to 60 Millions Consommateurs, examples of brands reducing quantity include a 300g pack of LU-branded biscuits that weighed 330g earlier this year and the former kilo pot Jockey fromage blanc now sold in weights of 850g.

Responding to the campaign, consumer affairs minister Luc Chatel told journalists that these practices had "always existed" and added that kilo or litre prices were required for just this reason.