Question to the Ministry of Defence:
To ask Her Majesty’s Government what are the current anticipated outturn costs and in-service dates for (1) Project Mensa, and (2) Project Pegasus, at the Atomic Weapons Establishment.
The anticipated outturn costs cannot be provided. The current approved costs and in-service dates for Project Mensa and Project Pegasus are shown below.
In-service dates are shown in bandings to avoid prejudice to national security and defence.
The Main Gate business cases for Projects Mensa and Pegasus include estimates for risk and uncertainty, which are contained within the approved costs.
Project | In-service period | Approved cost (£million) |
Project Mensa (warhead assembly/disassembly) | 2016-20 | 734 |
Project Pegasus (uranium components) | 2016-20 | 634 |