Question to the Ministry of Defence:

To ask the Secretary of State for Defence, what the expected operational dates are for Project Pegasus and Project Mensa at the Atomic Weapons Establishment.

Project Pegasus received Main Gate approval in August 2011 with an approved cost of £634 million. Project Mensa received Main Gate approval in May 2011 with an approved cost of £734 million.Both projects' approved in-service dates are between 2016 and 2020.

Consistent with industry best practice, major projects are regularly reviewed and may seek revised approvals if a robust evidence base is established.