The UK's largest retailer is under fire for trying to palm off New Zealand lamb under a Scottish logo.

Tesco is facing the fury of angry farmers and consumer, after one of its stores near Edinburgh supplied its customers imported New Zealand meat under a sign offering "the best Scottish lamb in season".

The Scottish National Farmers Union President Allan Bowie says the advertising blunder was wholly unacceptable and he's demanding the retail chain takes urgent action.

Mr Bowie says Scottish sheep farmers are angry the retail chain isn't supporting their country's sheep sector.