The U.K.’s Bradwell Magnox site after being placed in “care and maintenance."

The National Audit Office (NAO) of the United Kingdom reported on September 11 that the total cost of the work needed to put the country’s Magnox nuclear sites into “care and maintenance” has increased by up to an estimated £2.7 billion (about $3.5 billion) since the office’s last estimate in 2017. The NAO, which scrutinizes U.K. public spending, released its findings in a report examining the Nuclear Decommissioning Authority’s (NDA) management of a renegotiated decontamination and decommissioning contract with Cavendish Fluor Partnership.