Two of the top three food retailers in the UK, Tesco and Asda, today announced that all their own-brand meat products will be produced only from farm animals fed with non- genetically engineered (GE) feed, and that they are also committed to non-GE dairy products (1,2). Greenpeace applauded the move and predicted it will have a profound impact on the international market of soya and maize, the two main GE- crops currently commercialised.