UK Says Russia Conducted Submarine Operations Near Critical Infrastructure
Defence Secretary John Healey disclosed that Russian submarines had executed a secretive mission in the Atlantic, targeting the UK’s undersea cables and energy pipelines. British military assets, including a warship and aircraft, were activated to monitor the activity, with no signs of infrastructure damage reported, he stated.
Healey directly addressed Russian President Vladimir Putin, asserting:
“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.”
The UK’s reliance on these submerged networks for data and energy was highlighted, noting that over 60 cables land along the coastline, especially in East Anglia and South West England.
Russian Submarine Strategy Unveiled
According to Healey, Russia deployed an Akula-class submarine as a distraction while two Guggi-class vessels carried out surveillance. The first Akula exited UK waters promptly, returning to Russia, whereas the two Guggi subs stayed. The Royal Navy, alongside the RFA Tidespring and Merlin helicopters, tracked all three submarines, with Norway also participating in the effort.
Healey emphasized that the UK’s forces made it clear to the Russian subs that their movements were under observation. “We watched them, we were able to track them, and we dropped sonar buoys to demonstrate that we were monitoring every hour of their operation,” he added. The mission aimed to expose Moscow’s covert tactics, which Healey claimed were intended to exploit global attention on the Middle East conflict.
Global Significance of Underwater Networks
Undersea cables and pipelines are crucial to international infrastructure, with over 600 cables spanning 870,000 miles (1.4 million km) connecting nations. These networks transport electricity and information across oceans, often landing at discreet locations. The UK depends on a system of gas pipelines in the North Sea, including the 724-mile (1,166 km) Langeled pipeline linking Norway and the UK. Approximately 77% of the UK’s gas imports originate from Norway via these submerged routes.
Previously, the Russian embassy had stated its disinterest in British underwater communications. However, BBC InDepth reported in 2025 that Russia was engaging in “hybrid warfare” against the UK and Western Europe, aiming to deter continued military support for Ukraine. Hybrid warfare involves anonymous, deniable attacks that avoid direct attribution to a state, often conducted under ambiguous conditions.
