Greenpeace welcomed as 'the beginning of the end for GM food in Britain' the announcements today by Tesco and Asda that they will be going completely non-GM in all meat products and are committed to non-GM dairy products. The move will initially mean ranges of own-brand meat products will only come from farm animals fed a non-GM diet. (1). According to figures from the end of 2000, Tesco and Asda hold 42% of the UK grocery market between them.