Trident Missile Testing March 2017

Thank you for contacting me recently about the test firing of a Trident missile in June 2016.

As you know, it was reported in January 2017 that a Trident II D5 missile had malfunctioned during a test in June, shortly before Parliament was asked to vote on the Government's plans for the renewal of the UK's nuclear deterrent. This report of a failed Trident missile test is clearly a very serious matter, and we need to know exactly what happened. I am aware that CND is calling for an urgent inquiry into this matter.

On 23 January, the Defence Secretary was rightly forced to make a statement in the House of Commons in response to an Urgent Question about this issue. He confirmed that the Royal Navy conducted an operation in June last year designed to certify HMS Vengeance, a nuclear submarine, and her crew prior to their return to the operation cycle. This included a routine unarmed Trident missile test launch, which is reported to have gone off course.

The Government has said that it does not comment on the detail of submarine operations. However, it insists that it has absolute confidence in our independent nuclear deterrent.

While I do not expect the Government to disclose sensitive or inappropriate details, I agree that transparency and clarity are very important. Downing Street has admitted the Prime Minister was made aware of this test when she took office. However, she did not mention it in July when the Commons voted to renew our independent nuclear deterrent.

I believe the public deserves to know the facts on a matter as important as our nuclear deterrent, and to hear those facts from their Prime Minister, not a Sunday newspaper. There is a worrying lack of transparency at the heart of this issue and the British public deserves better.

I note that on 24 January the House of Commons' Defence Select Committee held a one-off oral evidence session as part of an inquiry on Trident missile tests. I can assure you that I will closely follow the outcome of this inquiry and any recommendations the Committee makes.

Thank you once again for contacting me and for sharing your views.