The UK economy grew by 0.1% in May 2026, bouncing back from a 0.1% shrinkage in April, according to the Office for National Statistics (ONS). The result was exactly what economists had predicted. Over the latest three months, the economy grew 0.7%, slightly down from 0.8% in the previous three-month window.

GDP stands for Gross Domestic Product. It is the total value of everything a country produces, and it is the standard way to measure whether an economy is growing or shrinking.

Almost all of May's growth came from services — things like banking, healthcare, research, and retail, which together make up about 80% of the UK economy. Services grew 0.3%, while production (which includes factory-made goods) fell 0.5% and construction dropped 0.8%. Scientific research and development was the single biggest contributor, jumping 5.1%. Imagine a restaurant where the kitchen is thriving but the delivery side is struggling — the overall business grows, but unevenly.

Liz McKeorn, ONS director of economic statistics, oversaw the release. The full report is on the ONS website (ONS). The figures came alongside good news from the International Monetary Fund, a global organisation that monitors the world economy. The IMF raised its 2026 UK growth forecast to 1%, up 0.2 percentage points from its April prediction. For all of 2025, UK GDP was estimated to have grown 1.3% (BBC News).

The budget situation is tighter than the growth number makes it look. The Resolution Foundation, a think tank, estimated that more than half of the £23.6 billion in spare budget space that Chancellor Rachel Reeves flagged at her spring statement would be eaten up by the economic fallout of the Iran war, as The Guardian reported. That spare space — called fiscal headroom — is basically the room a government has to spend or borrow without breaking its own financial rules. The squeeze arrives at a sensitive political moment: Reeves is expected to leave the Treasury around 20 July 2026 as Andy Burnham prepares to become prime minister. Shabana Mahmood is expected to replace Reeves as chancellor.

The broader context here is that the next chancellor faces tough choices from day one. They will take over an economy that is growing but only slightly, with factories and construction shrinking and war-related costs already eating into the budget. Whether the new team changes spending plans, rewrites the fiscal rules, or simply tightens its belt will shape how financial markets react through the autumn. The IMF's upgrade to 1% growth for the year offers some reassurance, but that number was set before the full cost of the war was known, and it is still below last year's 1.3%.

The mix of growth matters too. A 0.1% overall rise that relies entirely on services hides the fact that the parts of the economy that make physical things are getting smaller. Construction's 0.8% drop was the steepest decline of any sector in May, hinting at possible trouble in building projects. If factories and construction keep shrinking while services do all the heavy lifting, the gap between different parts of the country and different types of work could widen.

For the people running the economy, the May numbers show the UK is holding steady but not building speed. The three-month growth rate of 0.7% sounds healthy, but the dip from April and the contraction in that month suggest the real pace is slower than it looks. The Bank of England will have to weigh strong services against weak manufacturing when deciding whether inflation — the rate at which prices rise — is a concern. With the budget cushion shrinking, any further bad news on growth or borrowing costs could force the new chancellor into painful spending cuts within months of starting the job.