UK Submarine Fleet

Debate between Maria Eagle and Jim Shannon

Wednesday 15th January 2025 Westminster Hall

[Maria Eagle]

I knew I would get it wrong. My hon. Friend also mentioned the efforts of her constituents in contributing to this national endeavour.

The backlog of 23 decommissioned submarines that have yet to be dismantled and recycled, which has built up over many years—seven are stored in Rosyth and 16 in Devonport—is a longstanding and ongoing issue that needs to be resolved. The previous Government set out on a path to resolve it, and we intend to continue and make sure that that work is done.

While hon. Members should be in no doubt that our submarine capabilities are the envy of the vast majority of countries in the world, the disposal backlog is one of the challenges across the portfolio of the Submarine Delivery Agency that it identified in its most recent annual report, resulting from historic underinvestment in capability and infrastructure over many years. As a Government, we are committed to defueling, dismantling and disposal of those submarines, and to meeting our responsibilities at every stage of the life-cycle of our fleet. Defueling and disposal are complex tasks, and Ministers, our Submarine Delivery Agency, and our entire defence nuclear enterprise take their responsibilities extremely seriously.

HMS Swiftsure was mentioned by my hon. Friend the Member for Dunfermline and Dollar, and workers at Rosyth yard, as he knows very well, are in the process of entirely dismantling it, which is on track to be completed by the end of 2026. That will make HMS Swiftsure the first decommissioned Royal Navy nuclear submarine to be fully dismantled, with around 90% of its structure and components being reused or recycled. This is a demonstrator programme, designed to identify methods of dealing with the backlog of decommissioned submarines swiftly and safely—and, I might say, “surely”, given the name of the submarine, but that is a very corny joke. We intend to do that in a way that provides the best value for money for the taxpayer.

The responsible and innovative approach we are taking has a strong focus on sustainability. By extracting the reactor rather than storing the whole reactor compartment, we are recycling a greater proportion of each submarine and dramatically reducing the volume of radioactive material being placed in long-term storage. We are also ensuring that steel from decommissioned hulls will be able to be reused to support the manufacture of future UK-built submarines.

Workers at the Rosyth yard have also successfully and safely completed the initial stage of the dismantling process on four decommissioned submarines—which should give my hon. Friend the Member for Dunfermline and Dollar some reassurance about future work that is going on. That will pave the way to accelerate the programme, having learned, from HMS Swiftsure, the best way of going about it, and should sustain high-skilled jobs in Rosyth as we deal with this legacy.

In parallel, we are evaluating our long-term options for future submarine disposal capability in the UK, using the lessons being learned from HMS Swiftsure, to enable us to dispose of future classes of submarine as they leave service, rather than having to park them at Devonport again and then wonder what to do with them thereafter. The submarine disposal capability project was established in 2022, as I am sure the hon. Member for South Suffolk and you, Dr Murrison, recall, to identify an enduring disposal capability for future submarines. The project is still in its concept phase, assessing all options for a future submarine disposal capability within the UK. An initial study has shown that there were various potential sites for disposal, including Rosyth. That work was investigative.

[Jim Shannon]

I thank the Minister for her very comprehensive response. I am very keen to see that we all realise the potential from the dismantling of the submarines, and I know the Minister is very keen on that, too. Is there any possibility that we in Northern Ireland could be part of that, perhaps through Harland & Wolff and others?

[Maria Eagle]

I am going to have to go back to my officials and interrogate them about what the possibilities are in Belfast. It is not a place where submarine work or nuclear work has previously been done. There will be criteria that any potential place would have to meet in order to do that, but I will certainly go back and challenge my officials about the extent to which Belfast—