Iceland Foods chief executive Malcolm Walker has called small business lobby group the Forum of Private Business (FPB) "pillocks" in an increasingly bad tempered disagreement.
Walker was quoted in the Daily Telegraph yesterday as criticising a new code of conduct to protect farmers and small suppliers which had been strongly supported by the FPB.
The supermarket boss described the code as "a complete waste of time".
The FPB issued a statement calling Walker's comments "extremely disappointing" and said they reflected the unreasonable way supermarkets treat their suppliers.
Today the newspaper quoted Walker, speaking from Barbados, as saying: "The FPB are pillocks."