We explored how the Department, as sponsor, ensures that the NDA and Sellafield Ltd achieve value for money. It told us that it was for the NDA board and the Sellafield board to decide how to allocate resources, within the funding envelope set by ministers.76 We also sought to understand what work had been done to understand the cost implications of the current policy of returning Sellafield to a ‘greenfield’ condition. The Department told us that it had not done any analysis recently, but that it doubted that any change to the end–state would affect what Sellafield Ltd needs to prioritise over the next five to ten years. It did however acknowledge that this could be more relevant in the short–term for some of the NDA’s other sites.77