Other farms tested for disease
Officials are investigating other possible outbreaks of foot and mouth after a farm in Surrey was found to have infected cattle, said the chief veterinary officer.
Dr Debby Reynolds said a small number or potential cases had been reported in the wake of the discovery on the farm near Guildford, Surrey, some of which had already been found to be negative.
Dr Reynolds told a press conference in London that officials were undertaking an urgent investigation into the possible origins of the disease and where it might have spread.
Britain has imposed a voluntary ban on exports of all animals and animal products as a result of the foot and mouth outbreak.
The Department for Environment, Food and Rural Affairs (Defra) said: "We have voluntarily put a ban in place on all exports out of the UK to any other country. That includes live animals, carcases, meat and milk with immediate effect."
The ban follows the discovery of foot-and-mouth disease on a farm in Normandy, in Surrey
Defra, who also announced a nationwide ban on the movement of all sheep, cattle and pigs, has imposed a three kilometre "protection zone" and a 10 kilometre "surveillance zone" around the farm. All the cattle on the infected farm were being killed.
First results from the scientific analysis of the virus could be available as early as late Saturday, although it may take longer depending on the exact strain of the virus involved.
Once the strain has been identified, experts will check to see whether relevant vaccines are available in the British or European vaccine banks.
The outbreak raised the spectre of the foot-and-mouth epidemic of 2001, which brought chaos to Britain and left farming and tourist industries devastated. It led to the slaughter of nearly 10 million animals, ruined many rural businesses and is estimated to have cost the country up to £8.5 billion.
Metro