UK inflation rises to 3.1% on motor fuel, core holds at 2.6% ahead of Bank vote

Britain's annual inflation rate climbed to a five-month high of 3.1% in August as petrol and diesel did the lifting, while the core and services readings the Bank of England takes into a rate meeting did not move at all.

The Office for National Statistics published the figures at 7 a.m. London time, a day before the Monetary Policy Committee announces its latest decision on Bank Rate, still 3.75%. Consumer prices rose 0.5% on the month, against 0.3% in August 2025. Economists polled by Reuters had mostly expected the 3.1% annual rate. Bloomberg said the Bank had forecast 2.8% for August; the Bank's own July Monetary Policy Report put its central projection for the third quarter as a whole at 2.9%.

The Bank did not need a surprise to stay on hold. It did not get one. For a US holder of UK stocks, Wednesday's print means little until Thursday's vote. New York has not opened.

Motor fuel, not services, lifted the August rate

Transport, particularly motor fuels, made the largest upward contribution to both the monthly change and the annual CPI rate, the statistics office said. Average petrol prices rose 9.1 pence a litre between July and August, to 161.3 pence, against a 0.3 pence rise in the same two months of 2025. Overall motor-fuel prices were 23.0% higher than a year earlier, up from a 15.5% annual rate in July.

Air fares rose 6.2% between July and August, against 2.1% a year earlier, with the push coming from long-haul routes. Electricity, gas and other fuels rose 0.9% on the month, taking that annual rate to 6.0%. Food and non-alcoholic beverages were unchanged at 1.3% year over year.

The split underneath the headline is what Thursday's meeting will actually argue over. Core CPI, which strips out energy, food, alcohol and tobacco, held at 2.6%, matching June and July. Services inflation, the domestic-pressure gauge the Bank has leaned on, was unchanged at 3.4%. Goods inflation rose to 2.7% from 2.2%, the highest since September 2025, which is the fuel story showing up in the goods basket.

CPIH, the broader index that includes owner-occupiers' housing costs, rose to 3.3% from 3.1%. The Bank's 2% target is set on CPI.

That pattern matches the story the Bank has been telling since summer. In its July report it said the near-term rise in inflation was coming primarily from higher energy prices, a consequence of the Middle East conflict, with knock-on effects still to come.

Bank Rate is 3.75%, and the hawks have been adding votes

The committee has held Bank Rate at 3.75% at every meeting this year, but the minority has flipped. In February four members voted for a cut. In March the committee was unanimous to hold. By April one member wanted a quarter-point increase to 4%. That hawkish group was two in June and three in July, when the vote was 6-3 to hold. Thursday's announcement is due September 17.

In the July minutes, Megan Greene, Catherine L. Mann and Huw Pill said they preferred that rise to 4%. Uncertainty about how the Middle East conflict would evolve remained high, they said, and a proactive increase would reduce the probability of second-round effects: an energy shock feeding into wages and other prices. Andrew Wishart, senior UK economist at Berenberg, said after Wednesday's release that the data "continues to show few signs of a broader increase in prices that indicates a risk of inflation persisting after the energy price shock fades."

Reuters said markets expected another hold, with investors pricing around a 20% chance of a quarter-point increase and a hike fully priced for November. Overnight index swaps on Tuesday, before the print, had implied a 43.2% chance of a Thursday rise, according to StoneX. Those are different snapshots, not a single market's same-day move, and they leave the same practical reading: a hold is the base case, November is the live date.

The real economy going into the meeting is not frozen. UK GDP rose 0.4% in July, beating a forecast of no growth. That does not, on Wednesday's inflation split, force Bank Rate higher in the next 24 hours.

Sterling was little changed after the figures, at $1.3471, near a one-month low of $1.3464, Reuters reported, and flat against the euro at 85.66 pence.

Unhedged UK equity funds carry the pound, and the energy book

Two market-cap-weighted large- and mid-cap UK equity funds, iShares MSCI United Kingdom BEWU and Franklin FTSE United Kingdom AFLGB, both leave sterling unhedged. Two others also list in New York: a UK small-cap fund, iShares MSCI United Kingdom Small-Cap EWUS, and a quantitative UK stock screen, First Trust United Kingdom AlphaDEX FKU. Both leave the pound unhedged too. A hotter inflation print that left the pound unmoved, and a Bank still expected to sit at 3.75% on Thursday, does not by itself change what those funds own overnight.

Energy is 11.4% of BEWU and 10.9% of AFLGB, with Shell and BP among the largest lines in both.

That is the same energy complex sitting inside Wednesday's CPI, not a separate trade. etf.net grades AFLGB A and BEWU B in the developed single-country category, a comparison in which the cost pillar is the net expense ratio.

What a November hike would change for a US holder is the pound as much as the stocks. Both BEWU and AFLGB leave sterling unhedged, so a move in the pound around a higher Bank Rate would pass straight into the dollar share price, whether UK equities rose or fell with it. Wednesday's print did not start that move.