Bickering among dairy farmers could undermine the drive to raise milk prices, NFU dairy board chairman Gwyn Jones has claimed.

His warning comes after criticism of two campaigns to invoice processors for the difference between a sustainable and the actual milk price - reckoned to be about 4ppl. One is run by the NFU and the other by a group called Dairy Farmers of Scotland (DFOS), but both were branded a cheap stunt by NFU Scotland vice-president Jim McLaren at Agriscot last week. He said the only way forward was to add value.

"We mustn't split into factions like we used to," Jones warned. "I thought we'd got over all that, but apparently not." Jones also hailed efforts by DFOS for winning the support of half of Scotland's 1,400 dairy farmers for the campaign. But he said of England and Wales, with its 13,000 dairymen: "Responses are coming in, but not quickly enough.

"We're battling with apathy - and farmers are worried their names will be leaked to their milk buyers."