Britain's nuclear submarine base sees tenfold increase in security breaches since Russia's ...

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Britain's nuclear submarine base sees tenfold increase in security breaches since Russia's ...

Gbnews • February 26, 2026

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The Ministry of Defence did not disclose what was behind each security incident . However, it said the term "[refers] to, but are not limited to ...

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Tenfold Increase in Security Breaches at UK's Nuclear Submarine Base Britain's nuclear submarine base, HMNB Clyde, has experienced a tenfold increase in security incidents, rising from 16 in 2021 to 149 in 2025. This surge is attributed to heightened threats from Russian hybrid warfare following the invasion of Ukraine. The Ministry of Defence has not disclosed specific details regarding the nature of these incidents. 2 sources 35

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