Written Question·Ministry of Defence·UIN 106287

Nuclear Submarines: Deployment

Tabled: 15 January 2026

Answered: 23 January 2026

Question

Ben Obese-Jecty

Conservative — Huntingdon

To ask the Secretary of State for Defence, how many operational SSN’s were at sea as of 1 January 2026.

Answer

Al Carns

It is UK policy not to disclose the operational availability or deployment details of submarines, including SSNs, as doing so would, or would be likely to, prejudice the capability, effectiveness, or security of our Armed Forces.