Back-to-basics TV chef Hugh Fearnley-Whittingstall is calling for a shareholder revolt over the sale of factory-farmed chickens at Tesco.

The chef has bought shares in the retailer and has tabled a resolution to be debated at Tesco's agm next month forcing the company to withdraw its claims that it supports animal welfare or to adopt minimum standards set by the RSPCA, according to the Independent.

The resolution already has the backing of more than 100 investors and Fearnley-Whittingstall will email 100,000 campaign supporters urging them to contact a Northampton stockbroker which has agreed to help the campaign by buying a single share on their behalf for about £30.

Tesco said it checked suppliers regularly and its birds met the highest welfare standards.