Unite, the UK’s largest trade union representing Grangemouth workers, has written to Energy Secretary Ed Miliband demanding action against Grangemouth.In September, Petroineos, the owner of Grangemouth, announced plans to shut down Scotland’s only refinery in the second quarter of 2025, which will result in the loss of more than 400 direct jobs. The closure will also result in the loss of thousands of jobs in the company’s supply chain.