British authorities moved quickly to try and contain the outbreak of the highly infectious disease, imposing a nationwide ban on moving livestock. Six years ago, an epidemic of foot-and-mouth disease in Britain devastated the farming industry.
"There will be a ban on exports within the European Union. That is automatically imposed as a result of the finding of foot-and-mouth disease," Cabinet Office Minister Ed Miliband told the British Broadcasting Corp.
In a statement, the European Commission said it would adopt an emergency decision Monday "concerning restrictions on the movement of animals and the dispatch of products from the U.K."
Japan banned British pork imports following an outbreak of foot-and-mouth disease in southern England, Japanese agriculture ministry said Saturday. Japan had already banned beef imports from Britain since the 2001 outbreak of mad cow disease.
The case is the first in Britain since 2001, when a foot and mouth epidemic led to the slaughter of 7 million livestock. Many of the carcasses were burned on huge pyres that dotted the country, and large swaths of countryside were declared off-limits to visitors, damaging tourism.
At that time, the government was accused of reacting too slowly, allowing the highly infectious disease to spread.
Prime Minister Gordon Brown and Environment Secretary Hilary Benn cut short their holidays when they learned of the new outbreak and were due to hold a meeting of the government's crisis committee, COBRA, on Saturday.
The Department of Environment, Food and Rural Affairs, or DEFRA, said animals on a farm near Guildford, about 30 miles southwest of London, had tested positive for the disease, which affects cows, horses, sheep and pigs. It does not affect humans.
DEFRA did not immediately say how many animals were infected, but said all animals on the farm would be slaughtered.
At the infected farm, veterinary workers in protective white coveralls rounded up cattle. Vehicles entering and leaving he farm were sprayed with disinfectant.
Authorities imposed a two-mile radius protection zone and a surveillance zone of six miles around the farm. DEFRA said a ban was also imposed nationwide on moving all hooved animals, including pigs.
Scientists were carrying out tests to determine the strain of the disease, and whether vaccination would be possible to halt its spread.
The government was criticized for not using vaccines in the 2001 epidemic. A report on the epidemic by a senior scientific body, the Royal Society, concluded that vaccination should be a major tool of first resort in the event of future outbreaks.