Further work is being carried out to establish exactly how much horse meat these products contain and to test for the presence of the veterinary medicine phenylbutazone, or bute.
In line with good practice, BMC is withdrawing these products. The company is also contacting its customers to inform them of the results of these tests and to withdraw any of the affected products that they may have.
22 March update
*The Burger Manufacturing Company (BMC) withdrew the products after initial tests indicated that they contained horse DNA at a 1% Limit of Detection. However, subsequent tests confirmed the presence of horse DNA at levels below the 1% threshold for reporting.