Farmer David Sowray drives a combine harvester through a field on the family's 600 acre farm in Humberton, northern England, August 2, 2013. Britain's wheat crop is expected to be the smallest in more than a decade but near perfect harvest weather has proved a saviour of yields and quality, which should lessen demand for imports. Picture taken August 2, 2013. To match WHEAT-BRITAIN REUTERS/Nigel Roddis (BRITAIN - Tags: ENVIRONMENT AGRICULTURE BUSINESS)