British forces have intercepted a sanctioned oil tanker belonging to Russia’s shadow fleet in the English Channel, the defence ministry said.

The Ministry of Defence (MoD) said Royal Marine commandos and specially trained law enforcement officers from the National Crime Agency boarded a sanctioned oil tanker during a six-hour operation – the first UK-led operation of its kind.

The vessel Smyrtos will be provisionally moved to an anchorage off the south coast of England and be monitored for any environmental or safety concerns.

According to the MoD, the operation was supported by aircraft from the Maritime Air Group (Chinooks, Merlin Mk4 and Wildcat), an RAF P-8 aircraft, and HMS Sutherland and HMS Ledbury.

Despite Putin’s best efforts to evade sanctions, we will not let him get away with it. pic.twitter.com/IIW3Cv2ENQ

— Keir Starmer (@Keir_Starmer) June 14, 2026

British Prime Minister Keir Starmer said in a statement: “This operation delivers yet another blow to Russia and reminds those fuelling (President Vladimir) Putin’s war in Ukraine that they cannot hide.

“I want to pay tribute to all those involved, including our armed forces and law enforcement officers who keep this country safe 24 hours a day, 365 days a year.”

Defence Secretary Dan Jarvis said: “Operations like this require skill, professionalism and courage. I pay tribute to our armed forces personnel and all those involved.

“Russia relies on its shadow fleet to fund their conflict in Ukraine and our interdiction delivers a blow to Putin’s illegal war.”

Ukraine’s foreign minister hailed the interception.

“Russia’s shadow fleet is a tool of war. Every such vessel stopped means less money for Russia’s war machine,” Andriy Sybiga posted on social media.

“Cutting off these revenues helps reduce Russia’s ability to finance missile and drone attacks against Ukrainian cities.”

Additional reporting AFP