Balloons containing up to six times the legal limit of carcinogens are available to UK consumers through leading online marketplaces, according to an investigation.

Which? found that AliExpress, Debenhams, eBay, The Range and Shein have continued to sell carcinogenic balloons on their platforms despite more than 100 brands being recalled or flagged in official product safety alerts over the last 10 years.

Which? bought 21 packs of latex balloons from seven online marketplaces and put them through British standard tests to find out about the levels of carcinogenic chemicals they contained.

Eight out of the 21 balloons contained concentrations of potentially carcinogenic chemicals significantly above the UK’s permitted limit – meaning that they were being sold illegally.

Tests revealed t

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