British milk giant Robert Wiseman Dairies said earlier today [Tuesday] that it is confident that sales volumes and turnover for the full year ended 30 March are in line with market expectations. In a trading statement, the firm revealed that higher than expected milk production off farms in the second half of the financial year, and the arrangements Wiseman put in place to cover an expected shortage of raw milk following the foot and mouth crisis, generated excess raw milk supplies. The disposal of these into weak secondary markets had a negative impact on operating margin of approximately £0.5m (US$0.71m).