Nuclear Deterrent

Baroness Falkner of Margravine Excerpts

Wednesday 18th May 2011 Lords Chamber

[Lord Astor of Hever]

My Lords, I agree with the noble Lord that we live in a very dangerous world. That is why we are renewing our nuclear deterrent. I very much welcome the noble Lord’s support for what we are doing. In response to his last question, obviously we will keep this under review and do all we can.

[Baroness Falkner of Margravine]

My Lords, I welcome the Statement and in particular the emphasis on nuclear disarmament, with concrete actions beginning here and now. It shows the strength of purpose in delivering on the coalition agreement. I am also extremely pleased to see the establishment of the Trident alternative study. Will my noble friend tell us whether external expertise will be involved? I recognise the need for high-level security clearance, because these are sensitive matters. However, I emphasise that the inclusion of experts would make the study far more valuable, despite the competence that exists in the Cabinet Office.

I turn to the issue of continuous at-sea deterrence. The noble Lord, Lord Rosser, was not clear about alternative nuclear postures. Will my noble friend confirm that point 3 of the terms of reference is quite clear? Are there alternative, non-CASD nuclear postures that would maintain credibility? Will my noble friend give an assurance that, should the review conclude that there are alternatives, they will be seriously considered?

[Lord Astor of Hever]

My Lords, in answer to the noble Baroness’s first question, I suggest that she has a word with her honourable friend the Member for North Devon, who will be keeping oversight on this. We will do all that we can to help him with this study. I am not sure who he and the Cabinet Office will call in to give advice.

We feel that submarines are the most cost-effective way of delivering a credible deterrent. Their invulnerability to detection makes it impossible for a potential aggressor to launch a pre-emptive strike. Trying to achieve this level of capability with other platforms is either not possible or would require an enormous number of platforms. Obviously if the review comes up with an alternative, it must be considered. The matter has been looked at over and over again and I am confident that there is no improvement on the submarine system.