Producers calling for higher British pig prices took their complaints direct to the retail industry with a demonstration at this week's IGD Convention in London.

Senior figures from the UK's major multiples and manufacturers were confronted by dozens of protesters from the Pig Industry Support Group handing out pictures of a pig farmer with the words 'I'll be history by Christmas'. Current prices don't cover the rocketing cost of feed wheat, claim producers.

"Our survey of British pig producers shows that 25% cannot continue after December, which should worry the supply chain," said Ian Campbell, the National Pig Association's regional manager.

Morrisons' chief executive Marc Bolland won plaudits for adressing the demonstrations and promising a rise from 98% to 100% British sourcing on fresh pork.Tesco was also commended for leading a small price rise on fresh pork, but Campbell said rises were urgently needed on other products.