Methylmercury, which poses a particularly serious risk to pregnant women and children and has links to cancer, was found in almost all of the 150 cans purchased in a research project

Nearly all tins of tuna purchased in France, Italy, Spain, Germany and Britain, and part of a study, "were contaminated with mercury," which is particularly dangerous for pregnant women and children

The tests revealed 'contamination' with the metal, known to hinder brain development and cause potentially fatal lung damage

Almost all of the 150 cans of tuna purchased in the UK, France, Italy, Spain and Germany as part of a study were found to be contaminated with the toxic metal, experts have warned

Recent studies have found that nearly all tins of tuna purchased in France, Italy, Spain, Germany and the UK were "contaminated with mercury" which is highly dangerous for pregnant women and children.

Tests on almost 150 tins purchased in France, Italy, Spain, Germany and Britain, found all 'were contaminated with mercury'.

An alert has been issued over tins of tuna sold in the UK containing a substance which poses a "colossal risk to public health".