The Food Standards Agency said tests at a Dalepak plant in North Yorkshire had found no traces of meat contaminated with horse or pork DNA.
A spokeswoman said: "The FSA has today received the results of tests conducted on samples taken from the Dalepak plant by North Yorkshire Trading Standards.
Dalepak is one of the plants that was named by the Food Safety Authority of Ireland as having supplied beefburgers to retailers that contained traces of horse and pork DNA.
North Yorkshire Trading Standards focused on the burger product lines implicated in the survey carried out by the Food Safety Authority of Ireland.
They took 7 samples, comprising all the meat being used currently in the production of these lines. Neither horse nor pork DNA was detected in any of these samples.
Investigations continue into the origin of the horse and pork DNA detected in some Dalepak products produced in 2012.
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