Question to the Ministry of Defence:
To ask the Secretary of State for Defence, what the results are of all WP186 missile compensation tests undertaken by Trident submarines since May 2010.
These tests are part of a submarine's preparation for deployment. It may take more than one attempt for a submarine to pass the Weapons Procedure 186 missile compensation test, but Trident submarines do not go on patrol without successfully passing. For the purpose of safeguarding national security I am unable to disclose details of these tests.