The strain of bird flu found on a duck breeding farm in East Yorkshire is H5N8, the same strain that has been identified in the Netherlands and Germany, the Department for Environment, Food and Rural Affairs said.
British farmers should prepare themselves for the possibility that more bird flu cases could emerge in the coming days.
Keith Warner, president of the British Veterinary Poultry Association, issued a warning ahead of today's duck cull at East Yorkshire's Nafferton farm.
He said: "Everybody in the UK that owns birds in any number should be on biosecurity lockdown."
Chicken and turkey remains safe to eat, the Secretary of State for Environment, Food and Rural Affairs Liz Truss has told Parliament in the wake of a bird flu outbreak at a Yorkshire duck farm.
Asked whether consumers seeking to order Christmas birds such as turkeys would be affected, Ms Truss said: "Let's be clear, the Food Standards Agency have said it does not pose a risk for food safety for UK consumers - that's a very important point.
"The chicken and turkey people eat continues to be safe - this is a live animal disease."
Current government guidelines stipulate that birds infected with avian flu are culled to prevent the spread of the disease.
Speaking to ITV News, a Defra spokesman said it was not clear whether the animals would be killed today, but preparations for the cull were underway.
6,000 ducks inhabit Lowthorpe Lane farm in the village of Nafferton, and they will all be killed following the confirmation of the outbreak.
Prof Andrew Easton, professor of virology at the University of Warwick, said:
The risk to the poultry industry is high and the current measures require that infected birds are killed as quickly as possible to stop spread to other flocks.
There is always concern that some strains of flu may be spread by wild birds and surveillance measures are also likely to be introduced in surrounding areas to check for the possibility of spread.
Around six thousand ducks are due to be culled today after an outbreak of birdflu.
A six mile exclusion zone has been placed around the breeding farm in Nafferton near Driffield.
The government says there is a very low risk to human health.
Paul Heaton, has resigned his links with Sheffield United over the clubs decision to allow convicted rapist Ched Evans to start training again. The Beautiful South frontman, who's based in Manchester, is stepping down as patron of the club's community foundation. Ched Evans was released from prison last month after serving half of a 5 year sentence for raping a 19-year-old woman in a hotel in North Wales.
Government officials have been on the site of a duck breeding farm in Driffield today removing dead ducks and checking bio-security.
The government says there is a very low risk to human health and no risk to the food chain but has ordered the culling of six thousand ducks. Frazer Maude reports.
A 6 mile restriction zone has been put in place around the Yorkshire duck farm at Nafferton close to Driffield where bird flu has been confirmed.
The zone bans movements of all poultry, products and waste within the area.
A woman has died from Bird flu in Egpyt making her the second person to die from the virus in the country this year.
The 19-year-old woman raised chickens at home. She was admitted to hospital on November 10 but died today, officials said.
Health Ministry official Amr Kandil said the earlier fatality was in June. Since 2006, there have been 64 bird flu deaths in Egypt.
Most victims have been women and children who are traditionally tasked with caring for domestic poultry.
The bird flu H5N1 virus is hard to catch but has remained a threat.
The outbreak of avian flu in a duck breeding farm in Yorkshire is "most likely" the same strain as the outbreak over the weekend in the Netherlands, ITV News understands.
The particular strain of the virus - believed to be H5N8 in Yorkshire, the Netherlands and Germany - is extremely contagious between birds, raising fears that there will be more cases in Europe.
If confirmed as H5N8 it will be the first time this strain has been found in Europe - having previously only been in Japan and Korea.