Question to the Ministry of Defence:

To ask the Secretary of State for Defence, pursuant to the answer of 19 October 2026 to question 33724 on Russia: Telecommunications Cables, whether all undersea infrastructure can be monitored for potential interference.

For reasons of national security, I cannot provide detailed information on detections, intelligence assessments or the extent and timing of surveys of the United Kingdom’s critical undersea infrastructure.

The Ministry of Defence, working with partners across Government and our Allies, closely monitors maritime activity in and around UK waters. The Government’s £330 million investment over four years will strengthen the protection of the UK’s critical undersea infrastructure, enhancing our ability to detect, monitor, deter and respond to any potential threat.