UK shields Falklands oil firms as Argentina escalates legal war

The UK is rushing to shield oil companies operating off the Falkland Islands as Argentina escalates a legal offensive to halt hydrocarbon exploitation in disputed waters. London’s move comes after Buenos Aires filed for emergency measures at the International Tribunal for the Law of the Sea (ITLOS) and an Argentine judge suspended work on the Sea Lion development, located 220 km north of the Falklands.

The dispute centres on Argentina’s claim to sovereignty over the islands, which it calls the Malvinas, and surrounding maritime areas. Buenos Aires argues that oil development risks serious harm to the marine environment and undermines its territorial claims while arbitration under the UN Convention on the Law of the Sea remains unresolved.

UK legislation aims to counter Argentine pressure on oil firms: Argentina

“The Argentine Republic reaffirms, once again, its legitimate and imprescriptible sovereign rights over the Malvinas Islands, South Georgia, and the South Sandwich Islands and the surrounding maritime areas. By history and by right: the Falkland Islands are Argentine.”

Argentine government·Government statement

In response, the UK government has announced plans to use its Protection of Trading Interests legislation to prevent British companies from complying with Argentine measures targeting activity around the Falklands. Secondary legislation is expected to be in force before the end of the year, shielding firms and individuals from extraterritorial enforcement.

Sea Lion development at the heart of the legal battle

The move follows a temporary suspension ordered by an Argentine federal judge last month, halting drilling, offshore construction, and port-related work linked to the Sea Lion project. The ruling specifically targets Navitas Petroleum and its partner Rockhopper Exploration, though both companies maintain their operations are licensed by Falkland Islands authorities.

Pressure on contractors has already forced Halliburton to withdraw from the project. Earlier this month, the oilfield services giant confirmed it would not carry out work on Sea Lion after facing criminal and civil threats from Argentine authorities. The UK government has stated its protections are designed to reduce the impact of such pressure on companies making commercial decisions under UK law.

Con esta medida, el Gobierno británico busca consolidar su respaldo legal a las empresas afectadas, mientras el litigio en Argentina sigue su curso. La próxima audiencia en el juzgado federal está prevista para el 12 de noviembre, donde se evaluará la apelación presentada por Navitas Petroleum y Rockhopper Exploration contra la suspensión temporal.

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