Last week Worcestershire Scientific Services revealed that a third of the 200 products they had analysed contained genetically modified soya or maize. Only one product mentioned the fact on its label, and most companies claimed not to know that their products contained GM ingredients. And if companies don't know, they will not label their products.
Furthermore, the EU labelling law does not cover all GM ingredients. Genetically modified oils and lecithin (a soya derivative), both present in much processed food, are exempt from the labelling scheme.
Friends of the Earth