Greenpeace has launched a campaign warning shoppers that supermarkets are selling milk from cows fed on GM feed.

Greenpeace claims imported feed from the US [which grows GM maize and soya] goes into feed for UK milk herds.

Greenpeace has targeted Sainsbury, where volunteers have been stickering own label milk with ‘something scary in the dairy’ stickers. Next week campaigers will urge customers outside supermarkets to return milk to customer services.

A Sainsbury spokeswoman said customers could choose organic milk if they were concerned. “We have a legal requirement for all organic foods to be non-GM. Products are labelled so consumers can make an educated decision.”