Despite welcome rain in parts of the country, a return to higher temperatures still means that the quality of this year's crop will be lower than usual, according to the British Potato Council.

Earlier variety yields are estimated to be 8% lower than last year. While main crop plants have developed plenty of tubers, their size is small.

Growing costs have risen due to the need for irrigation in July. Where crops have not had this, the BPC believes it is too late for improvement.