Britain's economic growth prospects this year received the sharpest downgrade of any major economy in the OECD's interim forecast update on Thursday following the US-Israeli war on Iran, while inflation is set to rise faster too.
The Paris-based international body cut its 2026 forecast for British economic growth by half a percentage point to 0.7%, compared with a 0.4 percentage point downgrade for the euro zone and a 0.3 percentage point upgrade for the United States.
"Planned fiscal tightening and higher energy prices are anticipated to keep growth subdued in the United Kingdom, though the impact will be attenuated by lower policy rates next year," Reuters quoted the OECD as saying in its report.
Following are further highlights from the report and other context:
Britain's growth forecast for 2027 is unchanged at 1.3%.
Britain's inflation forecast for 2026 is revised up by 1.5 percentage points from December to 4.0%, the biggest upward revision of any large, advanced economy.
UK inflation in 2027 is forecast to be 2.6%, 0.5 percentage points higher than in December and above the Bank of England's 2% target.
Poorer UK households spend more on gas and electricity than in other rich countries, though total energy spending makes up a smaller share of UK inflation than elsewhere.
The OECD expects the BoE to keep interest rates unchanged this year then cut in Q1 2027 as inflation eases.
Britain's Office for Budget Responsibility, in forecasts finalized just before the start of the conflict, predicted GDP growth of 1.1% this year and 1.6% in 2027.
The BoE this month forecast inflation would rise to 3.0-3.5% over the next couple of quarters.
Prime Minister Keir Starmer has made boosting growth and reducing the cost of living top goals for his government.
Finance minister Rachel Reeves said the forecasts showed the war in the Middle East was affecting Britain but she would still focus on "regional growth, embracing AI and innovation, and establishing a closer relationship with the EU."
