Testing on Findus beef lasagne has revealed some of the ready meals were made entirely from horse meat, the Food Standards Agency (FSA) has said.
Shoppers who bought the lasagne products, which are made by French food supplier Comigel on behalf of Findus, have been warned not to eat them.
Findus tested 18 of its beef lasagne products which found 11 meals containing 60% to 100% horse meat, the FSA said.
A leading food scientist says the rule change that sparked the horsemeat beef scandal affected lamb products too, and they should be tested.
Retailers and the Food Standards Agency held an emergency meeting today to decide how to proceed with the horsemeat scandal.
The government has called an emergency meeting with retailers and the Food Standards Agency to discuss the horsemeat scandal.