UK ministers divided as Rosebank oilfield decision nears
Britain's cabinet is split over whether to approve the £8.7 billion Rosebank oilfield west of Shetland, as Brent crude trades above $100 a barrel and imports supply more than 70% of UK oil demand.
According to the project’s operator, Rosebank could produce roughly 69,000 barrels daily at its height, equal to about one-tenth of Britain’s anticipated oil output. A production vessel has already been positioned at the site since June. Ithaca Energy, which owns a 20% stake in the development, has indicated that a rejection would likely lead it to scale back future UK investment.
Chancellor John Healey supports giving Rosebank the green light, pointing to employment and tax revenue benefits, a position echoed by Business Secretary Jonathan Reynolds. Trade unions Unite and GMB are also pushing for the project to proceed. However, Energy Secretary Miatta Fahnbulleh, who holds ultimate authority over the decision under quasi-judicial rules, is said to be leaning toward blocking it, a stance reportedly backed by Foreign Secretary Ed Miliband. Fahnbulleh has previously argued that greenlighting additional fossil fuel schemes would be reckless and lacking foresight.
On October 21, Fahnbulleh gave approval to a different project, the Jackdaw gasfield, while drawing a contrast between the two developments. She noted that Jackdaw would supply gas for domestic use, whereas Rosebank’s crude output is destined mostly for overseas markets. Both fields had their original approvals overturned by Scotland’s Court of Session in January 2025, after judges ruled that the environmental assessments failed to account for emissions released when the extracted fuel is eventually combusted.
Situated about 80 miles northwest of Shetland, Rosebank is thought to contain nearly 500 million barrels of oil equivalent, with oil making up roughly 90% of that total, according to Rystad Energy figures. Ithaca’s own estimate puts recoverable crude at approximately 300 million barrels across two phases of development. Officials within government have calculated that the field’s carbon output would be about seven times greater than Jackdaw’s. Adura, the joint venture between Equinor and Shell that controls an 80% share and operates the project, states that its floating production vessel has been designed to eventually run on shore-supplied electricity, a switch that could reduce emissions per barrel by over 70%.
Separately, the North Sea Transition Authority disclosed that Britain’s confirmed and probable oil and gas reserves dropped to 2.5 billion barrels of oil equivalent as of late 2025, a fall of 0.4 billion barrels compared with the previous year. No exploratory wells were sunk anywhere on the UK Continental Shelf throughout that period.
Why it matters for markets: The outcome for Rosebank will shape UK oil and gas supply, North Sea investment flows, and investor sentiment toward energy majors like Equinor and Shell, while broader production trends in the region continue to factor into Brent crude pricing linked to European supply conditions.
Source: OilPrice.com