London Telegraph 
June 26, 2010
Supermarkets across Britain are routinely selling food from animals reared on genetically modified crops without having to declare it on labelling, it can be disclosed.
They have acknowledged that meat, fish, eggs and dairy products on their shelves could contain “indirect” GM ingredients.
Every major supermarket in the country said it was unable to provide a guarantee that it was not selling products from animals given GM feed.
Even ”high-end’’ retailers said only the more expensive organic ranges were certain to have been produced without any GM involvement.
The disclosures have reignited the debate about the use of genetic technology in food production following health and environmental concerns.