As of April 28, 2026, the Russian shadow fleet continues to traverse British waters unbothered, with at least 98 vessels subject to UK sanctions crossing these waters in the past month. This figure reflects a consistent trend, paralleling the traffic seen in prior months, despite warnings from Prime Minister Keir Starmer regarding military intervention against these ships.

Starmer's announcement on March 25, which suggested that British commandos could board these vessels, appears to have been an ineffective deterrent. No significant actions have been reported against these sanctioned ships, which are often implicated in transporting oil and military supplies that bolster Russia's war efforts in Ukraine.

The LSEG tracking data disclosed that 63 of these ships navigated within 12 nautical miles of the UK's coastline, primarily passing through the English Channel. An additional 35 vessels traversed the broader Exclusive Economic Zone, which extends up to 200 nautical miles from the coast, particularly around northern Scotland.

Notably, maritime security experts have voiced concerns about the UK Navy's lack of follow-through on Starmer's threats. Elisabeth Braw from the Atlantic Council warned that without prompt and decisive action, the vessels would perceive the threats as empty. Other European nations, such as France and Belgium, have successfully boarded and detained Russian vessels, further emphasizing the UK's relative inaction.

Experts also highlight the limitations of the British maritime response. The UK's naval forces are now smaller than they have been since the 17th century, and the navy faces demands to assist NATO operations in various regions amid numerous operational challenges. Legal and logistical complications further hinder the UK's ability to enforce its sanctions effectively.

The Kremlin has labeled UK sanctions as illegal and has denounced the government's policy as a hostile maneuver that could provoke retaliatory actions. The ongoing presence of the "shadow fleet," with reported practices like "spoofing"—where vessels manipulate their tracking systems—complicates the situation, indicating a high level of evasion tactics employed by these ships.

This situation raises alarm bells for UK naval capabilities and maritime security as analysts observe how the current response measures may affect Britain's international credibility moving forward.