Trade should not be affected following the findings in wild birds, according to the rules of the World Animal Health Organisation. "These could include steps to reduce contact with wild birds in ponds and other areas where water can be found".
While there are many different strains of bird flu, only two of them have caused serious concerns for humans over the past few decades.
"This is the first confirmed finding of the virus in the United Kingdom this winter and tests have shown it is closely related to the H5N6 strain that has been circulating in wild birds across Europe in recent months", said Defra, adding more cases are expected over the coming days.
UK Chief Veterinary Officer, Nigel Gibbens, said: "This is the first time avian flu has been identified in the UK this winter and while the disease does not represent a threat to the public, it is highly infectious and deadly to birds". Migratory birdsDefra believes the virus has come from migratory birds and has probably been around for a few weeks.
Public Health England said the risk to the public was very low.
Northern Irish flock keepers and poultry farmers have been warned to maintain high levels of biosecurity after 17 cases of bird flu were found in England today.
Poultry farmers in the South Dorset area of the United Kingdom have been put on high alert for bird flu.
From 12 January a new avian influenza prevention zone applies to everyone who keeps poultry or captive birds, in specific targeted areas of South Dorset. Bird flu is spread by direct contact between birds and through contamination in the environment, for example in bird droppings.
Farmers will be asked to increase bio-security measures and keep their birds indoors to minimise the mixing with wild birds and reduce the chance of spreading the disease.
"They should familiarise themselves with DAERA guidance on good biosecurity and how to report suspicion of disease appropriately".