UK Navy on High Alert: Russian Submarine Activity and Shadow Fleet Escorts Raise Concerns
The Royal Navy has reported a significant increase in Russian naval activity around UK waters, with a 25% rise in monitoring operations last month compared to the previous year. Throughout July, warships made repeated voyages through the Strait of Dover and the North Sea, prompting the deployment of offshore patrol vessels HMS Tyne, HMS Mersey, and HMS Severn, along with Wildcat helicopters and Merlin submarine-hunting aircraft. These assets were tasked with shadowing Russian frigates Neustrashimy and Admiral Grigorovich, which are believed to be escorting so-called ‘shadow fleet’ tankers. The heightened vigilance underscores the UK’s commitment to maintaining maritime security and situational awareness in its exclusive economic zone.nnIn a more alarming development, the UK Ministry of Defence exposed a coordinated Russian undersea operation in the North Atlantic. For over a month, three Russian submarines—including an Akula-class nuclear-powered attack submarine and two deep-diving units from the Main Directorate of Deep Sea Research (GUGI)—conducted covert activities targeting critical seabed infrastructure, such as undersea cables and pipelines. Operating north of the UK, these submarines attempted to remain undetected while gathering operational data. The operation was monitored continuously by Royal Navy surface vessels, RAF P-8 maritime patrol aircraft, and allied Norwegian assets, using layered detection systems including sonobuoys and airborne anti-submarine warfare (ASW) equipment.nnThis incident highlights the growing threat to undersea infrastructure, which is vital for global communications and energy transfer. The UK’s ability to track and deter such activities is crucial, and the Royal Navy’s Operation ADDISON remains a key component of this effort. The operation, which regularly monitors Russian warships transiting within the UK’s Exclusive Economic Zone, ensures that any hostile activity is met with a robust response. The recent tracking of the Russian spy ship Yantar by HMS Somerset and an RAF aircraft near key undersea cables off Scotland in November 2025 further illustrates the persistent nature of this threat.nnAs geopolitical tensions continue to rise, the UK and its allies remain vigilant. The coordinated response to these Russian operations demonstrates a strong commitment to protecting national and allied interests. The Royal Navy’s increased monitoring and the successful tracking of Russian submarines send a clear message: any attempt to disrupt critical infrastructure will not go unnoticed
Shimanta Das 
