UK Budget Trade-offs Worsen as Iran War Drives Inflation 2026

The Iran war is driving oil prices above $100 a barrel, forcing the UK government to face very difficult trade-offs in the next autumn budget, according to the National Institute of Economic and Social Research (NIESR). The thinktank warns that inflation will rise to 3.8% over the next seven months, eroding public service funding and welfare payments.

Challenging Inheritance for New PM

Prime Minister Andy Burnham inherits a challenging economic landscape. NIESR director David Aikman highlights that spending is being eroded by inflation, borrowing costs are the highest in the G7, and new spending demands are mounting. The thinktank expects the chancellor, John Healey, to find an extra £24bn by the end of the decade just to maintain current services.

Impact on Growth and Public Finances

The conflict in the Middle East has closed the Strait of Hormuz since March, disrupting oil shipments and raising energy prices. As a result, the UK economy is projected to grow only 1.1% this year and next, a downgrade that means £28bn in lost growth over two years compared to January forecasts. The chancellor's fiscal headroom has been cut from £7bn to near £3bn, leaving little room for new initiatives.

Pressure on Public Services

Higher inflation means the real value of public service budgets and welfare payments will fall unless additional funds are found. The NIESR warns that without action, the quality of healthcare, education, and social care will deteriorate. The thinktank advises against increasing borrowing to ease the strain, as that would only create longer-term problems.

Key Takeaways

• Iran war pushes oil above $100, raising inflation to 3.8%.
• Chancellor faces £24bn funding gap for public services.
• Growth downgraded to 1.1% for 2025 and 2026.
• Borrowing more now would harm future stability.

Strategic Decisions Ahead

The budget must balance immediate needs with long-term fiscal sustainability. Analysts suggest that targeted spending on infrastructure and energy independence could mitigate some effects. However, the trade-offs are stark: either raise taxes, cut spending, or accept higher debt. Each option carries political and economic consequences.

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