Question to the Ministry of Defence:

To ask the Secretary of State for Defence, what the timescale is for the replacement of each of the Vanguard class submarines.

The programme to build four ballistic missile submarines to replace the current Vanguard Class remains on track to deliver the first boat in the Dreadnought Class, HMS Dreadnought, into service in 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.