Removing additives and colourings from school dinners has transformed the lives of a group of pupils. Kids at Ysgol Deganwy Primary, in Conwy, North Wales, took part in a year’s trial in which processed meals were replaced by healthier treats including home-made pizzas. Teachers found the children's behaviour and concentration improved. And the trial, which cost the school nothing extra, was so successful that all 63 primary schools in Conwy County Borough have now changed to the healthier menus. The Sun