Revealed: Shock 'Code Red' safety report on British nuclear subs as fleet is hit by leaking, cracked reactors and lack of trained staff

Britain's ageing nuclear submarines have been issued with ‘Code Red’ safety warnings after inspectors found radioactive leaks and a chronic shortage of Royal Navy engineers trained to repair faulty reactors, The Mail on Sunday can reveal.

An official watchdog discovered major safety issues with both the UK’s nuclear-powered submarines and facilities used to repair nuclear missiles, raising the risk of a catastrophic accident involving radioactive material.

Last night, experts described the Defence Nuclear Safety Regulator (DNSR) report for 2012-13 as the most worrying they had seen.

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