Spain was also named the worst country for overseas credit-card theft

The Spanish authorities have warned that you should also be alert to the availability and possible use of 'date rape' and other drugs, including 'GBH' and liquid ecstasy," the Foreign Office says on its website. "You should purchase your own drinks and keep sight of them at all times to make sure they cannot be spiked."

Spain was also named the worst country for overseas credit-card theft in 2005. Of the 32,123 credit and debit cards stolen from British holidaymakers last year, more than a quarter (8,250) were snatched from people holidaying in Spain.