Nestle Fawdon factory to cut carbon emissions by 225,000kg following official opening of giant rooftop solar installation
Open letter signed by 10 food industry executives including Mars and Kellogg's also pledges to step up corporate action
Anaerobic digestion plant cuts emissions at Toffee Crisp and Rolo factory by nearly 10 per cent
After 23 US plants hit milestone more than 15 per cent of company's global factories now produce zero waste for disposal