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
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To ask the Secretary of State for Defence, what is the scheduled end date of Dreadnought Delivery Phase 4.
- Answer
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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
- 23039
- Session
- 2026-27
- Grouped for answer
- Yes
- Subjects
- Procurement Trident submarines
- Link
- View this Written question on www.parliament.uk
Librarians' tools
- Timestamp
- 2026-09-07 20:46:33 +0100
- URI
- http://data.parliament.uk/writtenparliamentaryquestion/commons/2026-27/23039
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- http://indexing.parliament.uk/Content/Edit/1?uri=http://data.parliament.uk/writtenparliamentaryquestion/commons/2026-27/23039
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