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Written question asked by Ben Obese-Jecty (Conservative) on Friday, 28 August 2026, in the House of Commons. It was due for an answer on Wednesday, 2 September 2026. It was answered by Luke Pollard (Labour) on Monday, 7 September 2026 on behalf of the Ministry of Defence.

Trident Submarines: Procurement

Question

To ask the Secretary of State for Defence, with reference to his Department's news story entitled Major £8.4bn investment advances UK nuclear deterrent and backs British industry, published on 30 July 2026, if he will provide a detailed breakdown of the £8.4 billion allocated to Dreadnought Delivery Phase 4.

Answer

Delivery Phase 4 (DP4) is the latest phase of the Dreadnought programme. It will enable the first-in-class submarine, Dreadnought, to complete her build, sea trials, and certification, ahead of entering service in the early 2030s. During this phase, the second boat will progress to sea trials, while the third and fourth boats will achieve key construction milestones.

Of the £8.4 billion allocated to DP4, £5.9 billion has been committed to BAE Systems through a contract signed in July 2026. Further contracts will also be placed with the wider submarine production supply chain during the DP4 period.

Secondary information

Type
Written question
Reference
23037
Session
2026-27
Related items
Trident Submarines: Procurement
Wednesday, 16 September 2026
Written questions
House of Commons
Grouped for answer
Yes
Subjects
Procurement Trident submarines
Contains statistics
Yes
Link
View this Written question on www.parliament.uk