The North Sea continues to play a central role in the United Kingdom’s energy landscape, supplying the majority of the country’s oil and gas and contributing to its energy security amid global market uncertainties. Industry figures indicate that oil and gas currently account for around 75% of the UK’s energy consumption, and while their share is expected to decline, they are projected to meet roughly 20% of demand by 2050.

Experts highlight the strategic advantage of the North Sea’s proximity, particularly for natural gas, which can be directly fed into the UK’s domestic gas network. Paul de Leeuw, director of the Energy Transition Institute at Robert Gordon University, noted that fields like Jackdaw have the potential to satisfy about 6% of the nation’s gas requirements. The UK and Norway supply around 85% of Britain’s gas from the North Sea, with the remainder largely sourced from liquefied natural gas (LNG) imports, primarily from the United States. Recent instability in the Middle East has driven up both demand and prices for US LNG, underscoring the benefits of local sources.

While gas fields can come online more swiftly, certain oil projects face logistical challenges. For instance, the Rosebank oil field, operated by multinational companies, produces a heavier grade of crude that the UK’s limited refining capacity cannot process efficiently. As a result, most of its output would be shipped to the Netherlands for refining before the final products—such as diesel and jet fuel—are brought back to the UK. De Leeuw emphasized that developing both Rosebank and Jackdaw would enhance energy security for Europe, which currently relies heavily on imports from outside the region.

Despite these potential benefits, the oil and gas sector’s employment has significantly contracted in recent years. Industry data shows a decline from 441,000 jobs in 2013 to 213,000 in 2023. Projections suggest that job losses will continue even if fields like Rosebank receive approval. Equinor, the developer behind Rosebank, estimates the field would support around 255 direct jobs and 137 supply chain positions over its operational lifespan. Advocates argue that renewed investment could extend the sector’s viability and indirectly support energy-intensive industries facing financial pressures, such as chemical manufacturing and heavy industry, both currently experiencing downturns attributed in part to high energy costs.

Environmental impacts remain a contentious issue. Shell estimates that the Jackdaw gas field could emit between 23.6 million and 35.8 million tons of carbon dioxide equivalent over its lifespan—the lower figure equating to roughly 60% of Scotland’s total emissions for 2023, while the higher approaches 90%. The company contends that using domestically produced gas would still generate fewer emissions than relying on imported LNG. By contrast, Rosebank’s oil production is expected to generate nearly 250 million tons of carbon emissions across its lifetime. Environmental groups, including Greenpeace UK, oppose further North Sea development, arguing that expanding offshore oil and gas operations will not enhance energy security. They advocate instead for accelerated investment in wind and solar power, which they say could reduce fossil fuel dependence and create more sustainable employment opportunities.

As the UK navigates its energy transition, the contrasting views on North Sea oil and gas development reflect a broader debate over balancing immediate energy needs, economic considerations, and environmental commitments.