UK's Strong First Half Faces Shadow of Iran Conflict

The UK has just recorded two consecutive quarters of expansion that would be the envy of many developed nations. The problem is the timing.

That puts the UK on pace to lead all G7 nations for two straight quarters, according to Sanjay Raja, Deutsche Bank's chief UK economist, who called the performance "scorching."

Raja calculated the first half's annualized growth rate at 2%, a number most of its G7 peers can only dream about right now.

This rebound is particularly notable given the UK's recent economic struggles. After years of lackluster performance, the country's expansion now stands out, but the reliance on consumer spending and weather-related services raises questions about its durability.

What's Driving the Boom

The recent uptick came from a familiar mix. Strong consumer spending did the heavy lifting, helped along by warm weather, England's run in the FIFA World Cup, and a general sense that business confidence was finally turning a corner.

Raja sees reason to believe the good times can continue. "Some slowdown remains likely," he said, "but for the first time in a while, we now see modest upside risks brewing."

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There are also signs this growth is healthier than it looks. Raja pointed out that private-sector performance, not government spending, is now driving the expansion. That shift matters because it suggests businesses are making real bets on the future rather than waiting for handouts.

The Iran Problem

Now for the part that keeps economists up at night.

The Iran war and the closure of the Strait of Hormuz, a narrow waterway that carries a huge share of the world's oil, threaten to push inflation sharply higher and weigh on growth. The UK is especially exposed because it imports oil and gas, leaving it vulnerable to energy price spikes. Its goods inflation has already risen more sharply than in most comparable countries.

Andy Burnham, the new UK prime minister, is inheriting this mess. According to a Wednesday Bloomberg report, Treasury officials presented worst-case scenario modeling to Burnham.

A Reality Check on the Numbers

Not everyone is convinced the strong start tells the real story.

Raja called the first-half performance "likely too good to be true." He noted that the initial six months' expansion figures typically come in higher than the latter half's numbers.

He also cautioned that the UK economy is not necessarily unscathed by the Middle East conflict, even if the headline numbers look solid for now. The International Monetary Fund cautioned in April that the ongoing U.S.-Iran conflict, which appears far from resolution, would damage the UK's economic outlook more severely than that of any other advanced nation.

The bottom line: The UK is growing, and that is genuinely good news. But the economy is running on a mix of weather, sports, and consumer confidence, all of which can vanish quickly. The Iran conflict could hit energy prices hard, and the UK has fewer defenses than most.

For investors, the takeaway is about timing. That 2% annualized growth rate is real, but it is also fragile. If the Strait of Hormuz stays disrupted, the Treasury's own projections suggest next year could look very different.

The first half of 2026 was a good run. The second half is a different game.

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