Question to the Ministry of Defence:

To ask the Secretary of State for Defence, what the cost to the public purse of the Defence Nuclear Enterprise was in (a) 2018, (b) 2019, (c) 2020, (d) 2021 and (e) 2022.

The Defence Nuclear Enterprise (DNE) comprises a range of interdependent programmes to support, maintain and renew the United Kingdom’s independent nuclear deterrent as well as the decommissioning and disposal activities for defence nuclear capabilities when they leave service.

These activities are spread across many budgetary areas and have not previously been reported as total DNE. From financial year 2023-04 we will report the majority of DNE nuclear spend as a separate line in the department’s Supply Estimates.