UK flags Iran war risk and cuts 2026 growth forecast amid economic uncertainty
The Office for Budget Responsibility (OBR) has downgraded the United Kingdom’s economic growth outlook for 2026, while warning that the ongoing conflict involving Iran could pose a significant downside risk to the broader economy. The update comes amid fluctuating energy prices, market volatility, and heightened geopolitical uncertainty that have clouded the UK’s already fragile recovery.
In its latest forecast, the OBR projected the UK’s gross domestic product (GDP) to grow by just 1.1% in 2026, down from the earlier estimate of 1.4% made in November. The revision reflects weaker late‑2025 performance data and an increasingly uncertain global backdrop, not least because of the Middle East conflict’s spill‑over effects on trade, energy markets and investor confidence.
Chancellor Rachel Reeves presented the updated forecast as part of her Spring Statement to Parliament, emphasising that the government’s overall economic strategy was still on track despite mounting risks. She acknowledged that the global situation had become “yet more uncertain,” particularly as tensions with Iran and the wider Middle East escalated following recent U.S. and Israeli strikes and subsequent retaliatory activity.
The OBR’s warning specifically flagged the war in Iran as a major risk factor that could undermine the growth forecast if it intensifies or disrupts key markets, especially energy supplies. Higher oil and gas prices stemming from geopolitical tension could push inflation higher and delay expected interest rate cuts by the Bank of England. This scenario would squeeze household incomes, weaken business activity, and dampen consumer spending, worsening the growth outlook.
Data from financial markets suggests these risks are already affecting investor sentiment. The British pound fell to near three‑month lows against the U.S. dollar as traders priced in the impact of Middle East tension on growth prospects, and the possibility that the Bank of England may delay cutting interest rates amid persistent inflationary pressures.
Alongside the growth downgrade, the OBR also signalled a worsening unemployment outlook, with the jobless rate projected to peak higher than previously thought, reflecting subdued hiring in a slowing economy. Youth unemployment in particular has been highlighted as “worrying,” with figures reaching levels not seen in over a decade, exacerbated by weak demand for labour across the country.
Despite the cut in near‑term growth, the OBR continues to expect moderate improvement in later years, forecasting higher growth in 2027 and 2028. However, the watchdog was clear that these longer‑term projections assume no major shocks from geopolitical volatility. Should the conflict widen or further disrupt energy markets, these forecasts could quickly be rendered outdated.
Analysts have noted that the UK’s economic position is particularly sensitive to fluctuations in global energy prices, given the country’s reliance on imported gas and oil. If supplies from the Middle East or key shipping routes such as the Strait of Hormuz are disrupted, energy costs could climb sharply, feeding through to household bills and business input costs — a scenario that could reverse recent gains in inflation moderation.
In response to the revised forecasts, Chancellor Reeves urged caution but insisted that her government’s strategy would help weather external shocks. She told lawmakers that fiscal discipline and targeted investment would support long‑term resilience, even as policymakers navigate elevated global uncertainty.
The revised outlook and the OBR’s explicit warning about the Iran war risk have resonated across markets, contributing to one of the sharpest one‑day drops in the FTSE 100 in nearly a year. Investors and economists alike are now watching energy prices, inflation data, and central bank signals closely for clues on the future trajectory of UK economic performance.
While domestic economic policy remains focused on stability and long‑term growth, it is clear that external factors such as conflict in the Middle East are increasingly shaping forecasts and policy choices in London. With energy costs, inflation dynamics and geopolitical risk all influencing the outlook, the UK’s 2026 growth story is becoming as much about global instability as it is about domestic fundamentals.
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