The move follows extensive talks involving the whole milk chain. NFU milk committee chairman Terrig Morgan said no individual multiple wanted to publicise intentions to raise prices ahead of the others. But he added there were strong indications that price increases were imminent.
"What is important now is that this expected increase in the retail price is passed back to producers. A corresponding increase in dairy products, such as cheese and butter, would help even more farmers."
Morgan said the industry would also press for further price rises in October.
His comments came as militant group Farmers For Action threatened to blockade regional distribution centres of Tesco, Sainsbury and Asda if they did not raise liquid milk prices.