Written question asked by Stuart Anderson (Conservative) on Thursday, 9 July 2026, in the House of Commons. It was due for an answer on Monday, 13 July 2026. It was answered by Luke Pollard (Labour) on Wednesday, 15 July 2026 on behalf of the Ministry of Defence.

Nuclear Submarines

Question: To ask the Secretary of State for Defence, what is the expected delivery date of the 12 next-generation SSN-B nuclear powered submarines.

Answer

As set out in the Defence Investment Plan, we will procure up to 12 next-generation SSN-AUKUS nuclear powered, conventionally armed attack submarines.

On current plans, we will cut steel on the first SSN-AUKUS submarine

next year, with the aim to deliver the first UK submarine into service in the 2030s.

I hope the Hon Gentleman will understand that the planned in-service dates for Royal Navy submarines are withheld as disclosure would, or would be likely to, prejudice the capability, effectiveness, or security of the Armed Forces.

Secondary information

Type: Written question
Reference: 17423
Session: 2026-27
Grouped for answer: Yes
Subjects: Nuclear submarines
Link: View this Written question on www.parliament.uk

Nuclear Submarines

Secondary information

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