Sir Paul McCartney has called on Britons to adopt "meat-free Mondays" to cut carbon emissions.
The former Beatle said cutting out meat one day a week was popular in Australia, where shoppers had become conscious of the environmental impact of cattle rearing and meat production.
In an interview with trade magazine The Grocer, Sir Paul called on UK consumers to cut down on meat consumption even if they could not give it up altogether.
He said: "A lot of people go to the gym on a Monday. With meat-free Mondays, it's a bit like going to the gym but with the added advantage of protecting the planet."
Sir Paul, a long-term vegetarian, said he was encouraged by the lead set by the UN on the issue.
