Question to the Ministry of Defence:

To ask the Secretary of State for Defence, what estimate his Department has of the out-of-service dates for each of the Vanguard-class submarines.

The UK's Vanguard Class submarines will begin to leave service by the early 2030s as the Successor submarines are introduced into service. I am withholding their respective planned out-of-service and in-service dates for the purpose of safeguarding national security.