Trade Unions Push UK Government to Halt Rosebank Oil Development
A coalition of ten major trade unions has called on the government to reject the Rosebank oil field development. Their intervention follows a court ruling that declared the project's original approval unlawful. Ministers had failed to assess the full climate impact of burning the oil and gas after extraction. The decision now rests with a government committed to ending new oil and gas licensing, yet facing pressure to protect jobs and industrial investment in established offshore projects.
Rosebank sits 130 kilometres north-west of Shetland in waters exceeding 1,100 metres deep. Equinor operates the field with an 80% stake. Ithaca Energy holds the remainder. The field contains an estimated 300 million barrels of recoverable oil. Phase one alone targets 245 million barrels. Equinor and Ithaca committed US$3.8 billion to development in September 2023. Production would use subsea infrastructure linked to a floating production, storage and offloading vessel.
However, the Court of Session ruled in 2025 that the original consent was unlawful. Environmental assessments had excluded downstream emissions. These are the greenhouse gases released when extracted fuel is eventually burned. The Supreme Court had previously established that such emissions must form part of the environmental review for new fossil fuel projects. Consequently, ministers must now reconsider the project using revised assessments that include lifecycle carbon impacts.
Ten unions challenge the economic and climate case
The union coalition represents millions of workers across the UK. Their statement describes approving Rosebank as incompatible with the country's climate responsibilities. They argue that the project would deepen rather than resolve the climate crisis. The language is stark. Union leaders termed potential approval "outright arson" in the context of accelerating global temperatures and extreme weather events.
Their intervention also challenges the claim that Rosebank would improve energy security. Oil extracted from the field would enter global markets. There is no mechanism to guarantee that fuel from Rosebank supplies UK households. Therefore, the project offers limited protection against international price volatility. Critics argue that genuine energy security requires reducing exposure to fossil fuel markets, not expanding production that will be traded globally.
Moreover, the unions highlight a persistent tension in energy transition planning. Workers and communities currently dependent on offshore oil and gas need credible alternatives. A just transition requires new employment, retraining programmes and industrial investment in clean energy. Without those elements, phasing out fossil fuel production imposes concentrated economic harm on specific regions and workforces. The unions argue that continuing to approve major oil and gas projects delays rather than facilitates that necessary shift.
Operators cite billions in investment and UK jobs
Equinor and Ithaca present Rosebank as a significant industrial commitment. Ithaca estimates total direct investment over the field's lifetime at approximately £8.5 billion. Around £6.6 billion of that sum could flow to UK-based businesses. The company projects that Rosebank would support roughly 2,000 jobs during peak construction. Throughout its operating life, the field could sustain approximately 525 UK-based positions.
The developers also emphasise domestic supply contributions. Ithaca calculates that Rosebank could account for around 7% of UK oil production from first oil through 2030. Gas output is expected to exceed 21 million standard cubic feet per day. This volume is equivalent to Aberdeen's daily gas consumption, according to company statements. Consequently, the operators argue that the field would support energy supply during the transition period.
In addition, Equinor and Ithaca say the floating production vessel is designed for future electrification. This modification could reduce operational emissions from drilling and processing. Nevertheless, critics point out that electrifying production infrastructure does not address downstream emissions. The carbon released when consumers burn the oil and gas represents the majority of the project's climate impact. These are precisely the emissions that the Court of Session ruled must be properly assessed.
How the court ruling changed the approval process
Rosebank's development consent was granted under the previous Conservative government. Environmental campaigners challenged that decision in court. Their legal action relied on evolving interpretations of assessment requirements. Specifically, the UK Supreme Court had established that emissions from the eventual use of extracted fossil fuels must be included in environmental reviews.
The Court of Session applied that principle to Rosebank. Judges found that ministers had not properly considered downstream emissions when approving the project. This constituted a legal flaw in the decision-making process. However, the ruling did not automatically terminate the project. Instead, it required the government to reconsider the development using a revised environmental assessment that includes full lifecycle emissions.
Developers have continued to work toward production during this reconsideration period. They maintain that the court ruling does not necessarily prevent Rosebank from proceeding. The timetable now depends on the government's response to the revised assessment. Ministers must decide whether the project can be approved when downstream emissions are properly accounted for.
Key facts about the Rosebank development
- The field was discovered in 2004 and lies in the Faroe-Shetland Channel, approximately 130 kilometres north-west of Shetland.
- Equinor and Ithaca announced a final investment decision of US$3.8 billion for phase one in September 2023.
- Estimated recoverable reserves exceed 300 million barrels of oil, with phase one targeting approximately 245 million barrels.
- The Court of Session ruled in 2025 that the original approval was unlawful because downstream emissions were not properly assessed.
- Developers estimate that Rosebank could support around 2,000 jobs during peak construction and approximately 525 UK-based jobs throughout operations.
- The project's gas output is expected to exceed 21 million standard cubic feet per day, equivalent to Aberdeen's daily gas consumption.
- The government must now reconsider the project using a revised environmental assessment that includes lifecycle carbon impacts.
Competing visions of energy security and transition
The Rosebank decision tests two fundamentally different approaches to energy security. Supporters argue that the UK will continue to require oil and gas for years to come. During this transition period, domestic production can deliver supply resilience, industrial jobs and tax revenues. Maintaining offshore capability preserves skilled employment and ensures that at least some fuel consumed domestically is extracted under UK regulatory standards.
Conversely, opponents argue that true energy security comes from reducing dependence on volatile global fossil fuel markets. Oil from Rosebank would be sold internationally. Consequently, it offers limited protection for UK consumers against price shocks. Furthermore, approving new fossil fuel infrastructure risks locking in emissions for decades. Capital invested in oil and gas extraction could otherwise support renewable energy generation, efficiency improvements and clean industrial development.
This tension also reflects different interpretations of the government's manifesto commitment. Labour pledged not to issue new licences for oil and gas exploration. Rosebank is not a new exploration licence. The field was discovered in 2004 and received initial approval under the previous government. Developers argue that it represents an existing commitment rather than a new project. However, the court ruling requires a fresh decision. Therefore, ministers must determine whether re-approving the project after proper emissions assessment constitutes a new licensing decision or confirmation of an existing one.
Additionally, the decision carries implications for other North Sea developments. Several projects await environmental decisions, including Cambo and Tornado. These fields have potential production dates between 2027 and 2030. A rejection of Rosebank would strengthen campaigners' arguments against future developments. Approval could establish a framework for permitting projects that address downstream emissions while demonstrating economic benefits. Either outcome will influence the future of the North Sea industry.
Why downstream emissions matter more than operational reductions
Operational emissions and lifecycle emissions represent fundamentally different categories of climate impact. Operational emissions come from drilling, processing and transporting oil and gas. These can be reduced through measures such as electrifying offshore equipment or using renewable power for production facilities. Developers often cite such improvements as evidence of environmental responsibility.
However, downstream emissions dwarf operational impacts. These are the greenhouse gases released when extracted oil and gas are eventually burned by consumers. For most fossil fuel projects, downstream emissions account for 80% to 90% of total lifecycle carbon impact. Therefore, even significant reductions in operational emissions leave the majority of climate damage unaddressed.
The Court of Session ruling establishes that UK law requires assessment of these downstream impacts. Ministers cannot approve new developments while ignoring the emissions that will occur when the fuel is used. This represents a significant shift in how fossil fuel projects are evaluated. Previously, assessments focused primarily on extraction and production. Now, the full climate cost of bringing new oil and gas to market must be considered.
For Rosebank specifically, this means the government must weigh the project's full carbon footprint against the UK's legal commitments under the Climate Change Act. The country has binding targets to reach net zero emissions by 2050. Intermediate targets require substantial reductions by 2030 and 2035. Approving a project that would produce significant emissions throughout the 2030s creates obvious tension with those obligations.
What businesses should consider as the decision approaches
Companies operating in energy-intensive sectors should monitor the Rosebank decision closely. The government's approach will signal how climate commitments will be balanced against industrial investment and employment in practice. Firms with supply chain exposure to North Sea operations face uncertainty about future project pipelines. Conversely, businesses positioned in renewable energy, efficiency services or clean industrial technology may see opportunities if policy shifts decisively away from fossil fuel extraction.
Manufacturers and service providers currently dependent on offshore oil and gas work should evaluate transition risks. If Rosebank is rejected, it may indicate that future North Sea projects will face higher regulatory barriers. Diversifying into offshore wind, carbon capture or decommissioning services could mitigate concentration risk. Our net zero programme helps businesses assess transition planning and regulatory compliance in evolving policy environments.
Furthermore, companies bidding for public sector contracts should note the direction of government policy. Many procurement frameworks now incorporate climate criteria. Demonstrating alignment with net zero objectives can strengthen tender competitiveness. Understanding how regulatory decisions like Rosebank reflect broader policy priorities helps businesses anticipate future requirements. Sustainable procurement support can help suppliers position themselves effectively as public sector expectations evolve.
Energy users should also consider long-term cost and security implications. Volatility in global oil and gas markets creates financial risk for businesses with high energy consumption. Reducing fossil fuel dependence through efficiency improvements, on-site renewable generation or long-term renewable power purchase agreements can provide price stability. The Rosebank debate underscores the fundamental uncertainty surrounding future fossil fuel supply and policy.
Where to find authoritative information on North Sea developments
The Department for Energy Security and Net Zero is responsible for oil and gas licensing decisions and energy policy. The department publishes policy statements, licensing updates and environmental guidance relevant to North Sea developments.
The North Sea Transition Authority regulates oil and gas operations in UK waters. The authority maintains data on production, reserves and licensing activity. It also oversees the industry's transition planning and decommissioning obligations.
Environmental assessment documents for major projects like Rosebank are available through the Planning Inspectorate's environmental impact assessment portal. These documents provide detailed technical information on project design, environmental impacts and mitigation measures.
The Climate Change Committee provides independent advice to the government on emissions targets and policy. The committee publishes regular progress reports that assess whether current policies, including decisions on fossil fuel production, align with the UK's net zero pathway.