The perfect storm is about to hit the UK
The UK economy is heading into a textbook policy nightmare, the OECD’s latest Interim Economic Outlook released Thursday (26 March) shows.
Growth is being slashed, inflation is spiking, and the Bank of England may have little choice but to keep policy tighter for longer, or even tighten further, just as activity is grinding to a halt.
A major source of these problems is the escalating conflict in the Middle East, which has shut down shipments through the Strait of Hormuz, sent energy prices surging, and disrupted global supplies of oil, gas, and fertilisers.
Sharp downgrades for the UK
The OECD now expects UK GDP growth of just 0.7% in 2026 – a brutal 0.5 percentage-point downgrade from its December forecast and the biggest downward revision among major advanced economies. That’s a sharp slowdown from 1.3% growth in 2025. Growth is then projected to rebound modestly to 1.3% in 2027.
Headline inflation, meanwhile, is forecast to jump to 4% in 2026, 1.5 percentage points higher than previously expected, before easing to 2.6% in 2027.
Core inflation (excluding food and energy) is seen moderating slightly to 2.8% from 3.5%, but the headline surge will dominate headlines and household budgets.
For context, the OECD’s global growth forecast was left broadly unchanged at 2.9% for 2026, but the UK’s outlook deteriorated more sharply than almost every other developed country and stands in stark contrast to the United States, where growth was actually revised up to 2%.
Energy shock hits at the worst time
The OECD’s data shows that the Middle East conflict is testing the resilience of the global economy. Since late February, the closure of key energy infrastructure and a near-halt in tanker traffic through the Strait of Hormuz, which carried about 20% of global oil production and a huge chunk of LNG, has triggered an immediate price spike.
The UK, like many European economies, is exposed through global energy markets even if it isn’t the most dependent on direct Middle East imports.
Higher energy costs feed straight into business expenses, transport, heating, and food prices at a moment when UK inflation was already sticky and above target.
“Higher energy prices and supply-chain disruptions come at a time when inflation remains above target in a few major economies, including the United Kingdom,” the group said. Medium-term inflation expectations have also risen following the energy price surge.
Monetary policy dilemma
The combination leaves the Bank of England in an unenviable spot.
The OECD’s message to central banks is clear: “Faced with the energy price shock, central banks need to remain vigilant and ensure that inflation expectations stay well anchored. Monetary policy adjustments may be needed if price pressures broaden or if growth prospects weaken substantially.”
The group has effectively warned against letting the energy-driven inflation spike become embedded, even if that means delaying rate cuts or holding rates higher while growth collapses. Markets had been pricing in easing later this year; those bets are now under threat.
The OECD urges governments to cushion the blow with targeted, temporary support for the most vulnerable households and viable firms – while preserving incentives to cut energy use and including clear expiry dates. Broad, untargeted subsidies are discouraged.
Longer term, the report calls for policies to improve domestic energy efficiency and reduce reliance on imported fossil fuels to lower exposure to future geopolitical tensions.
The perfect storm
The UK is not alone in facing the global energy crisis. The euro area, Türkiye, and several emerging markets also face painful trade-offs.
But Britain’s combination of a large downward growth revision, a sharp inflation overshoot, and an already elevated starting point for inflation makes its perfect storm particularly acute.
The global economy had been showing impressive resilience thanks to AI-driven investment and supportive financial conditions.
That resilience is now being stress-tested, and for the UK, the test has arrived in the form of slower growth, higher prices, and a central bank with very little room to manoeuvre.
