Question to the Ministry of Defence:

To ask the Secretary of State for Defence, with reference to page 22 of the National Security Strategy 2025, CP 1338, published on 24 June 2025, what recent steps the Royal Navy has taken to (a) lead and (b) coordinate work to help protect undersea infrastructure.

The Royal Navy is acting under the direction provided in the Strategic Defence Review 2025 to lead and co-ordinate work to protect critical undersea infrastructure. This includes new investment capability options for platforms and sensor suites to counter threats.

Options for new investment to support critical undersea infrastructure protection are in the Royal Navy’s submission into the Defence Investment Plan, which will report in due course.