UK Authorizes Armed Forces to Seize Russian Shadow Fleet Vessels in National Waters

The United Kingdom has taken a significant step to tighten enforcement against Russia’s so-called 'shadow fleet' by authorizing British military and law enforcement to board and seize sanctioned vessels transiting UK waters. This fleet is seen as a key enabler of Russia’s war machinery in Ukraine, transporting goods and materials that sustain Moscow’s military efforts.
This enhanced interdiction capability follows recent Royal Navy operations supporting NATO allies monitoring these ships around Europe. By extending enforcement to UK territorial waters, the government aims to close loopholes that allow these vessels to evade sanctions enforcement at sea.
The move directly targets Russia’s maritime logistics network, increasing pressure on President Vladimir Putin by choking off critical supply chains. It also reinforces the UK’s role as a frontline actor in countering Moscow’s aggression in Ukraine. British and allied security officials will closely monitor the impact of this policy on Russia’s ability to sustain its war effort.
The announcement was made as the UK Prime Minister convened with regional leaders at the Joint Expeditionary Force Summit in Helsinki, a forum addressing emerging security challenges linked to the war in Ukraine and broader European stability.