Question to the Ministry of Defence:

To ask the Secretary of State for Defence, what progress he has made on the submarine support project of the Naval Support Integrated Global Network programme.

The Naval Support Integrated Global Network (NSIGN) Programme continues to progress through the Assessment Phase with the NSIGN (Submarines) Project Outline Business Case (OBC) approved April 2025 and Full Business Case approval expected in early 2026. Concept work is progressing with the NSIGN(Ships) and NSIGN (Naval Bases) Projects seeking OBC approval early and mid-2026 respectively.

The NSIGN Projects will enable the Ministry of Defence to contract for Submarine and enabling Naval Base services delivered through Clyde and Devonport in March 2026 and for Ships and wider Naval Base services from October 2028, with a parallel (and planned) extension of the Future Maritime Support Programme (FMSP) where required, for the period March 2026 to October 2028.