Question to the Ministry of Defence:
To ask Her Majesty’s Government why the estimated cost of the nuclear deterrent successor programme has increased.
Designing and building submarines is one of the largest programmes and one of the most complex activities that the Ministry of Defence and UK Industry undertakes. It is the purpose of a design phase to improve our understanding of costs and timescales, which we have now done. The current estimates reflect what we have learned since the design phase began.