Question to the Ministry of Defence:

To ask the Secretary of State for Defence, with reference to the press release entitled King Charles III marks historic milestone for nuclear submarine programme, published on 22 September 2025, what the completion timeline is of the fourth boat in the Dreadnought Class.

The Dreadnought Class submarines will begin to enter service from the early 2030s. 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.