Bronze artwork by sculptor Barbara Hepworth stolen from park in London . Barbara Hepworth is one of the greatest artists of the 20th century and appreciation of her work has never been greater . Art expert says it was likely sold for scrap for just a few hundred pounds . Demand for metals has led to theft from cars , telephone boxes and war memorials . Politicians are facing pressure to increase controls on scrap metal dealers to counter theft .
Bronze artwork by sculptor Barbara Hepworth stolen from park in London . Art expert says it was likely sold for scrap for just a few hundred pounds . Demand for metals has led to theft from cars , telephone boxes and war memorials . Politicians are facing pressure to increase controls on scrap metal dealers to counter theft .