The Department of Agriculture has urged vigilance after Britain's first ever case of Bluetongue disease was confirmed at a farm in Suffolk.
One animal has been culled at the premises where the virus was detected in Suffolk and restrictions have been put into place
Bluetongue is a disease of animals and it does not affect humans.
The department said an importation ban on live animals from Britain is already in place because of the recent outbreaks of foot and mouth disease.
Last night tests confirmed another case of foot and mouth disease in Surrey.
Cattle on a farm in the same area as three other recent cases tested positive for the disease.
Around 40 cows on the farm in the Egham area were already being slaughtered as a precaution.
Britain's Department for Environment, Food & Rural Affairs said the farm was within the current 3km protection zone, which was set up after the latest cases emerged.
The protection and 10km surveillance zone have been extended slightly northward.
Tests were carried out after the animals displayed clinical signs of the disease.
It is the sixth confirmed case of foot and mouth in Surrey since the initial outbreak at the start of August.
A number of sites outside Surrey have also been investigated and several control zones set up, but these have all proved to be false alarms.
Laboratory results have shown that the strain of the disease has been the same in all cases in the outbreak so far.
Animals on the fifth premises, Klondyke Farm, had the same strain as the previous four infected farms.
The latest four cases near Egham have emerged in the last two weeks, just days after officials declared the UK free of the disease following the August outbreak which has been blamed on the virus escaping from leaking pipes at the nearby Pirbright laboratory site.
Some 1,800 animals have been slaughtered since the outbreak.
The Irish Sheep and Cattle Association has said it is concerned that the foot and mouth outbreak is not under control.
