A new international forum to assess the benefits and risks of GM crops is likely to emerge follow a summit of over 400 scientists, environmentalists and policymakers in Edinburgh this week. The three day session was chaired by Sir John Krebs who will head Britain's Food Standards Agency. Sir John said he was eager to find common ground between pro and anti GM elements. But for all the diversity of scientific opinion, the retailer's voice was largely absent. Martin van Zwanenberg, former food technology director at M&S, was the only retail representative speaking. The event was overshadowed by Tony Blair's comments in the press that he had new found worries about GM foods (see page 20). {{NEWS }}