Prime Minister Keir Starmer is set to unveil a fresh wave of sanctions on Russia, vowing the UK will “do everything in our power to destroy” Vladimir Putin’s so-called shadow fleet.

Officials say the government will target up to 100 oil tankers accused of moving cargo in defiance of sanctions.

It comes as Starmer attends a meeting in Norway with the Joint Expeditionary Force (JEF), a military coalition of 10 European nations, where they are expected to announce further support for Ukraine.

Downing Street said the new sanctions will target ships that have moved more than $24 billion (£18.1 billion) worth of cargo since early last year.

It also warned that ships in the shadow fleet have damaged key infrastructure, including an undersea cable in the Baltic Sea, through what is called “reckless seafaring”.

Starmer said that every move to increase pressure on Moscow and push for peace in Ukraine is “another step towards security and prosperity in the UK”.

“The threat from Russia to our national security cannot be underestimated; that is why we will do everything in our power to destroy his shadow fleet operation, starve his war machine of oil revenues and protect the subsea infrastructure that we rely on for our everyday lives,” he said.

“My Government will safeguard working people from paying the price from the costly threat Putin’s fleet poses to UK critical national infrastructure and the environment.”

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The JEF, a military alliance of mainly northern and eastern European countries, has been active since 2018.

Alongside the UK, other members of the JEF include Nordic nations such as Denmark, Finland, Norway, Sweden and Iceland, as well as the Baltic states and the Netherlands.

When JEF leaders last met in December 2024, the UK announced a round of sanctions on Russia.

At Friday’s meeting, the leaders are expected to announce further support for Ukraine’s armed forces through training exercises and other programmes that will help JEF nations to learn from Kyiv’s battlefield experiences.

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