UK Economy Beats Forecasts as AI Boom Drives Programming Growth Ahead of Budget

Britain's economy expanded faster than expected in August, supported by a surge in manufacturing and continued growth in computer programming, adding to evidence that artificial intelligence investment is becoming an increasingly important contributor to economic activity ahead of Finance Minister John Healey's budget.

Gross domestic product rose 0.1% month on month, according to figures released by the Office for National Statistics (ONS) on Thursday. The increase exceeded expectations in a Reuters poll of economists, who had forecast a 0.1% contraction.

The annual growth rate climbed to 2.1%, its highest level since October 2022, when economic output was still recovering from the COVID-19 pandemic. Excluding that recovery period, the rate was the strongest since December 2019, highlighting an improvement in Britain's recent growth performance.

Computer programming was the largest contributor to economic growth over the three months to August, strengthening the case that the artificial intelligence boom is supporting activity in Britain's technology sector. The figures also showed unexpected strength in manufacturing and consumer spending, suggesting that the improvement was not confined to technology businesses.

"The sector breakdown suggests that AI is behind much of the upswing," said Andrew Wishart, senior economist at Berenberg Bank, adding that consumer spending had also surprised to the upside despite rising inflation.

The figures provide a welcome boost for Healey as he prepares a budget under pressure from competing demands. Stronger growth could support government revenue and reduce some of the pressure on public finances, but persistently high borrowing costs and uncertainty over the economic outlook continue to constrain the government's options.

The strongest technology-related signal came from computer programming, which grew 1.1% in August and recorded a 13% increase in output so far this year. Across the broader information and communications sector, UK output has risen by 12% this year, compared with 2% in Germany and 0.2% in France, according to national accounts data.

The divergence indicates that Britain's technology-related activities are expanding more rapidly than those of several major European peers. Business investment, particularly in technology hardware, has also helped underpin the country's stronger-than-expected performance.

Jake Finney, senior economist at PwC, said investment by businesses had been an important driver of growth this year.

"The UK still lags the US in both the scale of that investment and the boost it provides to growth, but it is making progress and remains ahead of many of its European peers," he said.

Although Britain has not matched the United States in the volume of technology investment, the expansion of its information and communications sector suggests that spending on digital infrastructure and related activities is contributing to domestic output.

AI-related activity could support growth through several channels, including demand for computing infrastructure, software development and technology services. However, the latest figures do not quantify how much of the increase in programming output can be attributed directly to AI. The sector's performance provides evidence consistent with an AI-related boost, rather than a definitive measure of the technology's contribution to GDP.

The sustainability of that contribution will also depend on whether investment translates into lasting productivity gains and broader business activity. Stronger demand for programming and technology hardware can lift output in the near term, but the longer-term economic benefit will depend on how effectively businesses use these investments to improve efficiency and expand production.

Britain's broader services sector also showed strength over the past year, according to the ONS, reinforcing the view that the improvement extends beyond a single industry.

"We will have to stop talking about resilience and start talking about some genuinely respectable growth this year even if activity stagnates in Q4," said Thomas Pugh, chief economist at tax and audit firm RSM UK.

His assessment points to a stronger annual performance than the subdued outlook that has characterized much of the recent debate about Britain's economy. Nevertheless, one month of positive GDP growth does not establish that the economy has entered a sustained expansion, particularly with higher energy prices and borrowing costs expected to weigh on activity.

Manufacturing provided another important source of support in August, with output increasing 1.2% from the previous month despite forecasts for a slight decline.

The services sector, which dominates Britain's economy, recorded no monthly growth. That was still better than the 0.1% contraction economists had expected, with computer programming helping offset weakness elsewhere.

The combination of stronger manufacturing and resilient services activity suggests that the economy performed better than anticipated across several areas. However, the uneven monthly performance also highlights why the headline GDP figure should not be interpreted as evidence of uniformly strong demand.

Analysts expect the data to influence the Bank of England's deliberations as policymakers assess whether to raise interest rates next month. Third-quarter growth appears on course to exceed the central bank's forecast of 0.4%, according to the report.

Pugh said the stronger performance suggested that interest rates at current levels might not be as restrictive as the Bank of England had assumed. If economic activity remains stronger than expected, policymakers could face a more difficult decision over whether existing monetary conditions are sufficient to contain inflation.

That decision is complicated by the prospect of renewed price pressures. Rising inflation has not prevented consumer spending from surprising on the upside, but stronger demand alongside higher energy costs could make it harder for the central bank to bring inflation under control without further restraint.

Britain was jointly the fastest-growing economy among Group of Seven nations during the first half of 2026, alongside the United States. The latest data add to that relative strength, although future performance is likely to be determined by the ability of investment and domestic demand to withstand pressure from energy prices and tighter financial conditions.

The International Monetary Fund said earlier this week that higher energy prices and rising long-term interest rates were likely to weigh on British growth next year. It nevertheless upgraded its forecast for 2026 economic growth to 1.3%, from its previous estimate of 1.0%.

The revised outlook suggests that the UK economy has performed better this year than the IMF previously anticipated, but the expected slowdown next year remains a constraint on the medium-term outlook.

Healey welcomed the latest figures, presenting them as evidence that Britain was coping with international economic shocks.

"Despite conflicts in the Middle East and Europe hitting people across the world, today's figures offer more proof of Britain's resilience in the face of these global shocks," he said in a statement.

The improved growth picture could provide some support as the government prepares its budget. A stronger economy can increase tax receipts by supporting employment, business activity and household incomes, potentially easing pressure on the public finances.

However, stronger output does not automatically resolve the government's fiscal challenges. Long-term government borrowing costs recently reached their highest levels since the 1990s, although bond yields fell sharply on Thursday. Elevated financing costs can increase debt-servicing expenditure and limit the resources available for public services, investment and other spending commitments.

Healey therefore faces a difficult balance between meeting the government's fiscal rules, supporting economic activity and maintaining investor confidence. A stronger growth outlook may improve the revenue side of that equation, but it does not remove the need to account for borrowing costs or the risk of slower activity in 2027.