Vodka drinkers have been warned not to buy two fake brands of vodka which could contain dangerously high levels of methanol.

The Food Standards Agency said that the Imperial Valkonov and Kelvenoff Vodka brands, in one litre clear bottles have blue labels with a red stripe instead of the gold and silver labels on the original ones.

While the vodka brands were under different names the FSA said both were marked "Distributed for KMG57, Bodana Khmelnitskogo Str 236039 Khalingrad Russia for EEC" in very small print.