Richard Walker has urged the government to consider imposing a temporary cap on energy company profits, warning that households risk bearing the brunt of another price shock linked to the Middle East conflict. The Iceland boss, recently appointed as a Labour peer and cost-of-living adviser, said ministers should examine limiting earnings for producers and retailers during periods of extreme volatility. “I have asked the government to consider a temporary profit cap … to stop producers and retailers exploiting the crisis to make windfall…