Rosebank Oilfield Decision Looms as UK's Next Major Energy Policy Test, with Owners Adura and Ithaca Awaiting Government Consent
The Rosebank oilfield, located approximately 80 miles north-west of Shetland and owned by Adura and Ithaca, is now the most consequential pending energy decision before UK Energy Secretary Miatta Fahnbulleh, following the government's approval of the Jackdaw gas field on 21 October 2026. Rosebank, larger than Jackdaw, sits above an estimated 300 million to 500 million barrels of oil and gas, enough reserves for approximately 25 years of production. The field's floating production, storage and offloading vessel (FPSO), the Petrojarl Rosebank, is operated by Aberdeen-based Altera under a charter arrangement with the field owners, and has 122 workers currently on board maintaining the infrastructure in readiness for a potential production consent. The regulatory backdrop is complex. Consent for Rosebank production was first granted under the previous Conservative government in 2023. However, in 2025, following a legal challenge brought by Greenpeace and Uplift, the Court of Session in Edinburgh ruled that the approvals for both Rosebank and Jackdaw were unlawful because they had failed to account for the climate impact of burning the extracted fossil fuels. The judge, Lord Ericht, permitted continued work short of production while developers submitted updated environmental assessments. US President Trump, speaking at the White House on 23 October 2026, praised the Jackdaw decision and said he had discussed opening up North Sea oil with Prime Minister Andy Burnham, adding political pressure on the government ahead of the Rosebank decision. Environmental group Uplift has argued Rosebank approval would undermine investor confidence in the UK's clean energy transition.
Why this matters
The Court of Session ruling in 2025 created a novel and legally demanding standard for new oil and gas consents: environmental assessments must now account for downstream combustion emissions, not just extraction-phase impacts. The government's approach to Rosebank will test whether the revised environmental assessment submitted by Adura and Ithaca meets that standard and whether it can survive further legal challenge. The political context is acute: Jackdaw's approval drew immediate international attention and signals from the Burnham government that energy security can override climate concerns in specific cases. Rosebank is materially larger, more emissions-intensive, and more lucrative, making the decision harder to frame as routine. A refusal would disappoint the North Sea industry at a moment of heightened investment uncertainty; an approval risks further litigation and reputational costs on the UK's net-zero commitments.
On the Ground
The Rosebank decision generates work across energy, planning and environment, and disputes practices. Lawyers advising Adura and Ithaca will be working through the updated environmental assessment submissions, regulatory consent processes under the North Sea regulatory framework, and preparing for the possibility of judicial review if consent is refused or challenged. Environmental law teams advising Greenpeace and Uplift will be monitoring the assessment for deficiencies that could ground a further challenge. A trainee on this matter would assist with planning permission and licence condition summaries, regulatory filing coordination, and analysing the environmental assessment submissions against the Court of Session's ruling to identify gaps that could attract challenge.
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Question you might get
“Following the 2025 Court of Session ruling that Rosebank's original consent was unlawful, what legal risks does the government face if it approves the field under a revised environmental assessment?”
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