Defence and Security Review (NATO)

May I say to my hon. and gallant Friend that it is no good contrasting the building of the Successor-class submarines with the Astute-class submarines, because if we do not build the Successor submarines—I am not saying that that is a reason to have a deterrent when we otherwise would not have one—there will be a huge gap between the ending of the Astute hunter-killer programme and the next hunter-killer programme, in which all skill in building submarines will be lost.