Britain’s nuclear submarines operate largely out of public view. This preview offers a rare glimpse inside a Trident submarine. It explores the environment, technology, and daily life beneath the sea.

Russia ran a secret operation targeting crucial energy and data cables in British waters for over a month, the Defence Secretary revealed today. John Healey said a nuclear-powered attack submarine and ...

A former British Royal Navy chief deemed the U.K. “no longer capable” of managing a nuclear submarine program. Retired Rear Adm. Philip Mathias said the country is failing to build the submarines ...

Russia deployed three submarines to spy on the UK’s critical undersea pipelines in the northern Atlantic, British officials revealed on Thursday. UK Defense Secretary John Healey called out Russian ...

Three Russian submarines conducted a "covert" operation over cables and pipelines in waters north of the UK, Defence ...

The UK is to build up to 12 SSN-AUKUS attack submarines as part of the multi-billion project with Australia and the US.

John Healey, the defense secretary, said the vessels were gathering information about undersea pipelines, and said he believed President Vladimir V. Putin “would want us to be distracted by the Middle ...

LONDON — Britain and Norway conducted a weekslong military operation to deter Russian spy submarines near undersea cables in the North Atlantic, the U.K. defense chief said Thursday, accusing Moscow ...