Labour today called for faster and more extensive testing on meat imports in a bid to stamp out problems which caused the horsemeat scandal.
Shadow Environment Secretary Mary Creagh condemned the Government for breaking up the food standards regime.
She said every time processed meat moved there was a "moment of risk" of potential illicit contamination.
The Opposition Day debate in the Commons came as more cases emerged of horse meat being missold in processed food sold by British retailers.
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.