Leicester City Council has said that tests it conducted on meat products showed that half of all samples contained the DNA of other animals than were declared.

The tests were implemented in order to reassure local communities after a halal lamb burger made by a company supplying local schools was found to contain up to 50% pork.

No meat products were contaminated with undeclared pork or undeclared horse, but the tests showed positive for traces of beef and chicken in many samples.

Among the products which failed the tests were samples of lamb curry found to contain only beef or turkey, and samples of lamb mince from butchers' shops made with undeclared beef or chicken.

The tests also found samples of beef sausages and burgers that contained undeclared chicken, lamb spring rolls and lamb samosas with undeclared chicken and beef, and chicken samosas that contained only lamb meat and lamb samosas that contained only chicken meat.