Just a third of food products explicitly state the origin of their main ingredient on their packaging, according to a new study.

European Union law allows manufacturers to label meat products with their ‘location of last substantial change’ – meaning products made from imported meat can still be labelled ‘produced in the UK’.

And new research commissioned by the Food Standards Agency revealed that just one in 10 consumers understand the meaning of origin labelling.

More than half of shoppers surveyed thought country of origin labelling referred to where produce was farmed, while others thought it meant where animals were slaughtered or born.