Oil tankers sanctioned by the UK due to Russia’s actions in Ukraine have been passing through the English Channel, despite official promises for more aggressive measures. The UK has vowed to be more 'assertive' in intercepting these tankers, known for obscured ownership and part of Russia’s 'shadow fleet,' which circumvent sanctions on oil exports.
As per BBC Verify, 42 such tankers traversed the Channel even after the UK government confirmed legal capabilities to detain them. The 'Sofos,' a tanker sanctioned by the UK Foreign Office in May 2025, was among these vessels. It sailed from Venezuela to near St Petersburg, after loading oil in Russia and briefly disconnecting its tracking system in Venezuelan waters.
Another tanker, the 'Nasledie,' sanctioned in May 2025 and formerly part of the shadow fleet, also navigated the Channel in January. After re-registering under a Russian registry, the vessel carried 100,000 tonnes of Urals crude oil through the region. This activity demonstrated the shadow fleet's role in counteracting the oil export embargo that has adversely impacted Russia's economy since 2022.
Despite the legal framework that allows interception of stateless tankers, the UK has yet to independently seize any such vessels, managing only to assist the US and France in interceptions in Iceland and the Mediterranean, respectively. Six tankers have been identified in the Channel under false flags since early January, raising questions about the UK's enforcement of maritime laws.
Political figures, including Dame Emily Thornberry, expressed disappointment at the lack of interception. She emphasized the need for effective sanctions implementation to genuinely support Ukraine. Similarly, MP Mike Martin criticized the UK’s hesitance, asserting the readiness of the Royal Marines for such operations. Recent reports indicate Russia has been escorting sanctioned tankers with warships, signaling their anticipation of UK actions.