Burger King has dropped the food processing plant which supplied contaminated burgers to supermarkets.
The fast food chain joined supermarkets Tesco, Aldi and the Co-operative Group in dropping Irish company Silvercrest over the horsemeat debacle.
Burger King said the failure to deliver 100% British & Irish beef patties was a violation of contracts.
Diego Beamonte, vice president, global quality, at Burger King Corporation, said: "Our supplier has failed us and in turn we have failed you. We are committed to ensuring that this does not happen again."
More top news
Big companies will have to show that their supply chains do not use the slave labour or exploit people, David Cameron has announced.
Disneyland Paris is reportedly facing a pricing probe amid claims it charges British tourists more than its French customers.
Overworked GPs are becoming so tired they could be putting patient's safety at risk, the head of British general practitioners has warned.