Whitworth exports flour to food manufacturers and bakeries across Europe, chalking up overseas sales of £36.6 million in the year to March 2020, with production at its nine sites ramping up during the pandemic. The Northampton group is led by chairman Roger Butler, 60, and acquired Carr’s Flour Mills in 2016 for £36 million. It is introducing a new milling facility using technology from Swiss firm Bühler and is piloting a blockchain application to trace grain for better transparency.