Food Standard Officials have today issued some robust guidelines to public institutions amid the horsemeat contamination scandal.
They have made it clear that suppliers of meat to schools and hospitals are to be included in a UK-wide system of checks.
The companies that supply public bodies will be subjected to new "verification and validation" tests. Schools and hospitals have been told to require their suppliers undertake tests.
The new document has gone to schools, prisons, hospitals and the armed forces.
The key advice is they must "seek assurances" from all their meat suppliers.
They have also been told to take a hard line and "reject or ... withhold stock" from any firm that they are not fully satisfied can give the right guarantees.
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.