More than 30 different children's toys sold in the UK have now been recalled amid mounting fears that several products containing sand from China may be contaminated with asbestos . Shops including M&S, Tesco, Primark and Matalan are among the latest retailers to have sold products including kids' candle-making kits, stretchy rubber toys and coloured sand, which have now been recalled. All the toys are believed to contain sand mined from China where asbestos occurs naturally, but where safety standards and labelling are less rigorous. The alarm was first raised in Australia at the end of last year, when 69 schools were forced to close after coloured play sand was found to contain the cancer-causing substance. After that, a parent in the UK sent samples of sand they'd bought at Hobbycraft to a testing lab, allegedly finding traces of asbestos fibres in the bottles of yellow, green and pink sand.…