UK says Russia ran submarine operation over cables and pipelines

UK Accuses Russia of Submarine Activity Near Critical Infrastructure

Defence Secretary John Healey revealed that Russian submarines conducted a covert mission in waters north of the UK, targeting undersea cables and pipelines. He stated that a British warship and aircraft were deployed to counter the “malign” actions attributed to Moscow, with no damage reported to the nation’s Atlantic infrastructure. The operation, he emphasized, was closely monitored to ensure any threat to UK systems was identified and addressed.

“We see you. We see your activity over our cables and our pipelines, and you should know that any attempt to damage them will not be tolerated and will have serious consequences,” Healey asserted during a press conference at Downing Street on Thursday.

The UK’s reliance on undersea cables and pipelines for data and energy was highlighted. Approximately 60 cables, landing at various coastal points, particularly in East Anglia and South West England, facilitate over 90% of the country’s daily internet traffic. Additionally, the nation depends on a network of underwater gas pipelines in the North Sea, including the 724-mile Langeled pipeline linking Norway to the UK, which supplies 77% of its gas imports.

Healey detailed that Russia employed an Akula-class submarine as a distraction while two Guggi-class vessels carried out surveillance. The first Akula was observed leaving UK waters shortly after being tracked, while the two Guggi subs remained. To monitor the operation, the Royal Navy deployed a Type 23 frigate, HMS St Albans, an RFA Tidespring support ship, and Merlin helicopters. Other countries, though not named, also contributed to tracking the activity.

Healey explained that the UK demonstrated its vigilance by deploying sonar buoys, ensuring Russia understood its movements were under constant observation. “Our armed forces left no doubt that they were being monitored,” he said, adding that the operation exposed Russia’s “attempted secret activity.” He warned that Moscow continues to pose a “primary threat” to UK security, leveraging distractions like the Middle East conflict to advance its goals.

Prime Minister Sir Keir Starmer echoed Healey’s stance, vowing to shield the public from “Putin’s aggression” by protecting energy costs. “We will not shy away from taking action to expose Russia’s destabilizing activity,” he stated, underscoring the UK’s resolve against hybrid threats.

Global Significance of Undersea Infrastructure

Undersea cables and pipelines are vital to global connectivity and energy distribution. Over 600 cables span 870,000 miles, transmitting electricity and data across oceans. These systems often terminate at discreet locations, making them strategic targets. The BBC InDepth report from 2025 noted that Russia has engaged in hybrid warfare against the UK and Western Europe, aiming to deter military support for Ukraine through covert means.

Hybrid warfare involves anonymous, deniable attacks that avoid direct attribution to a state. The Russian embassy previously claimed it had “no interest” in British underwater communications, though recent actions suggest otherwise. The UK remains confident in its ability to track and neutralize future threats to its critical infrastructure.