Retailers have been warned to be on the lookout for counterfeit alcohol after raids in East London unearthed fake vodka containing dangerous levels of chemicals.

Food safety officers raided 200 stores in the area and six were found to be selling counterfeit bottles of Spar Imperial Vodka. These retailers have since been cautioned under the General Foods Regulation Act.

A spokesman for the Food Standards Agency warned that selling the product was not only illegal, but highly dangerous. "The bottles contain high levels of methanol, which can be life threatening to those who drink it," he said. "We urge all retailers to check their stock and if unsure contact authorities."