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.
– FSA spokesperson
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.
Agriculture minister David Heath told the Commons the Food Standards Agency checks all meat to ensure it is fit for human consumption, following claims by Wakefield MP, Mary Creagh that carcinogens may have made their way into the food chain through contaminated horse meat.
– Agriculture minister David Heath
Where positive results of phenylbutazone are found the FSA investigates and takes follow-up action to trace the meat.
A drug with the potential to cause cancer in humans might have entered the food chain through horse meat slaughtered in UK abattoirs, Labour has claimed.
Shadow environment secretary and Wakefield MP Mary Creagh told the Commons she had evidence that "several" horses slaughtered in the UK last year tested positive for the carcinogen phenylbutazone.
It's after a Dalepak factory in North Yorkshire was implicated in the horse meat in beefburgers scandal last week. Bosses at the ABP foods plant in Leeming bar insisted only a trace amount was found in their products.