• Britain imposed sanctions on the banking arm of Yandex, two additional lenders, and insurer Rosgosstrakh
• More than 20 oil and LNG vessels linked to Russian energy exports were targeted
• The UK became the first G7 nation to sanction ships connected to Russia’s Arctic LNG 2 project
• A covert procurement network accused of sourcing Western technology for Russia’s defense sector was also sanctioned
• Individuals identified as GRU officers were included in the measures
• Britain has now sanctioned nearly 600 vessels associated with Russia’s shadow fleet
• The government also announced £210 million in financing to support Ukraine’s energy security

Britain has imposed a sweeping new round of sanctions targeting key financial institutions, energy shipping networks, and individuals accused of helping sustain Russia’s war economy, as Western governments intensify efforts to restrict Moscow’s access to capital, technology, and export revenues.

The measures, announced on Tuesday, include sanctions against the banking arm of Russian technology company Yandex, two additional lenders, major insurer Rosgosstrakh, and more than 20 vessels linked to the export of Russian oil and liquefied natural gas.

The package forms part of the UK government's broader strategy to weaken the financial and logistical systems supporting Russia’s military operations in Ukraine and comes as leaders of the Group of Seven nations continue discussions on coordinated economic pressure against Moscow.

Prime Minister Keir Starmer said the latest actions were aimed at the networks helping to sustain Russia’s war machine.

“These sanctions target the vessels, the money and the actors propping up Russia’s war economy, and in turn, threatening European security,” Starmer said while attending the G7 summit.

A significant focus of the sanctions is Russia’s so-called shadow fleet, a network of vessels often operating under foreign registrations and used to transport Russian oil and gas in ways designed to circumvent Western restrictions.

Many of the ships are aging tankers that have become central to Moscow’s efforts to maintain energy exports despite sanctions imposed since the invasion of Ukraine.

The latest package includes more than 20 oil tankers as well as several liquefied natural gas carriers.

Britain said it had become the first G7 nation to sanction vessels connected to Russia’s Arctic LNG 2 project, a strategically important energy development that Western governments have sought to disrupt.

The UK government said it has now imposed sanctions on nearly 600 vessels associated with the shadow fleet.

The announcement follows recent action by British authorities, including the interception of a tanker in the English Channel that officials linked to sanctions evasion activities.

Beyond energy exports, the sanctions also target what Britain described as a clandestine procurement network centered on a company known as Neptune. According to the government, the organization has been involved in acquiring Western technology and equipment for Russia’s defense industry.

British officials allege that Neptune operated as a front organization for Russia’s GRU military intelligence agency, helping source goods and technologies that could be used to support military production and operations.

As a result, the sanctions extend beyond companies to include individuals identified as GRU officers, alongside businesses in Russia and other countries accused of supplying defense-related technology.

The move reflects a growing trend among Western governments to focus not only on direct financial institutions but also on the wider ecosystems that facilitate sanctions evasion, including shipping operators, procurement agents, intermediaries, and technology suppliers.

The sanctions package was accompanied by fresh support for Ukraine’s energy sector.

Britain announced £210 million in financing aimed at strengthening Ukraine’s energy security, including support for a loan that will help state-owned nuclear operator Energoatom secure supplies of enriched uranium.

The dual approach of increasing economic pressure on Russia while expanding financial support for Ukraine underscores the UK's determination to maintain pressure on Moscow as the conflict enters another year.

With sanctions increasingly focused on the infrastructure that enables trade, finance, and military procurement, the latest measures signal that Britain intends to continue targeting the networks that help Russia generate revenue and obtain critical resources despite existing international restrictions.