Spain saw the highest number of overall arrests of British citizens, but countries with the most drug-related arrests included Jamaica, Argentina, Brazil, Serbia and Peru.

And people remain at risk for such exotic crimes as wearing camouflage in Barbados, says the report, because over two-thirds of Britons do not look up local laws before going away.

Others to avoid are wearing a bikini in the streets of Barcelona and making satirical jokes about the Thai royal family.

Proportionally, British citizens were most likely to be arrested in the USA and Thailand, the report said but the total number of British arrests across the world, however, dropped by over 10 percent from the previous year.

The annual report also shows that Spain continues to be the country with the most Britons hospitalized, a figure which has increased since last year.

The Foreign Office said that the number of deaths of Britons abroad increased very slightly, to 5,972 from 5,930 last year. As a proportion, Brits are significantly more likely to die in the Philippines than in any other country.

“Prison conditions in some parts of the world can be very poor, overcrowded and, in some cases, dangerous and sentences can be much tougher than in the UK.” Minister for Europe, David Lidington, said in a statement.

“People are mistaken if they think the Foreign Office can get you out of jail.”

Details of the Foreign Office’s “Know Before You Go” campaign are on its website www.fco.gov.uk/en/