The maker of Quality Street and Lion bars has said it is experiencing some supply chain problems ahead of the Christmas period. A number of sectors have had problems with their supply chains due to a chronic shortage of HGV drivers. Factors including global bottlenecks with shipping have also played a part. Nestle, which also makes Aero and KitKat, is the world's largest producer of dairy products - and works with hundreds of thousands of farmers around the world with millions of cows. Ahead of a major climate summit in Glasgow next month, chief executive Mark Schneider was in the UK to launch a range of non-dairy, plant-based alternatives to its milk and chocolate in an attempt to further reduce the company's greenhouse gas emissions. He said that these alternative products would cost more than their dairy equivalents at first but that the cost would come down over time.