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Written question asked by Richard Holden (Conservative) on Monday, 24 November 2025, in the House of Commons. It was due for an answer on Wednesday, 26 November 2025. It was answered by Luke Pollard (Labour) on Tuesday, 2 December 2025 on behalf of the Ministry of Defence.


Submarines: Repairs and Maintenance

Question

To ask the Secretary of State for Defence, how many submarines have been unable to deploy due to maintenance overruns in each of the last five years; and what steps his Department is taking to reduce the potential impact of increased operational tempos on submarine availability.

Answer

The Ministry of Defence continues to work closely with the Submarine Delivery Agency and industry partners to minimise maintenance overruns and ensure that submarine availability remains aligned with operations


We are investing in infrastructure, work capacity and improved maintenance processes to mitigate the impact of increased operational tempos on the Fleet.


Secondary information

Type
Written question
Reference
93793
Session
2024-26
Subjects
Costs Deployment Submarines Repairs and maintenance
Contains statistics
Yes
Link
View this Written question on www.parliament.uk