The UK economy managed only the faintest growth in May. Output rose 0.1% on the month, recovering from an unrevised 0.1% contraction in April, according to the Office for National Statistics. It was in line with what economists had expected, but a 0.1% reading is barely growth at all, the statistical equivalent of an economy treading water.

What monthly GDP measures

Gross domestic product, or GDP, is the total value of everything an economy produces. The ONS estimates it monthly, which gives a timely read but a noisy one: single months bounce around and get revised. That is why economists lean on the smoother three-month figure, and there the picture is steadier but still soft. Over the three months to May, the economy grew 0.7%, a touch slower than the 0.8% pace in the three months to April, per the ONS. Growth, in other words, is positive but decelerating.

A narrow, services-led bounce

The composition is the concern. May's growth rested entirely on services, the dominant part of the UK economy covering everything from finance to hospitality, which grew 0.3% on the month, while production output fell 0.5%, according to the ONS. When a single sector is doing all the lifting and factory output is shrinking, the recovery looks fragile rather than broad-based.

The ONS also flagged that a recurring theme in its business surveys was disruption to global supply chains linked to conflict in the Middle East, with a share of firms citing it as a drag. That external pressure, and the higher energy costs that come with oil-market tension, is part of the backdrop to the weak numbers.

Why it matters for rates

The timing puts the Bank of England in a bind. The Bank sets interest rates to balance two goals: supporting growth and keeping inflation in check. Sluggish output like this argues for lower rates to give the economy a lift. But if energy-driven price pressures are pushing inflation up at the same time, cutting rates risks fanning it. That combination, weak growth alongside sticky inflation, is the uncomfortable mix policymakers least like to face, and it makes the Bank's next decision a close call.

The bigger picture

For a global audience, the UK reading is a small but telling data point: one of the world's larger economies is growing, but only just, and leaning on a single sector to do it. It feeds directly into the pound, UK government bond yields and the Bank of England's rate path, all of which investors watch. None of this is a forecast of what comes next; the useful takeaway is that Britain entered the summer with very little economic momentum, and an external shock in the oil market is not helping. Boursel will track the next set of figures and the Bank's response.