UK inflation rises to 3.1% on fuel as the Bank of England prepares to decide

UK inflation rose to 3.1%, with motor fuel prices jumping by almost a quarter¹. Petrol and diesel price rises pushed the headline rate up and moved it further away from the Bank of England’s 2% target as the Middle East conflict continues to disrupt global oil supplies². Summer holidays added to the price growth⁷.

The reading is a five-month high, an increase that will pressure the Bank of England to raise rates again this year³. Inflation accelerated in August to its highest level since March, keeping price pressures well above the target ahead of a rate decision on Thursday⁴.

Why it matters to investors

Britain is the clearest current example of an oil shock transmitting into a headline inflation number that a central bank has to answer for^2,7. The rise, while not unexpected, further limits the Bank of England’s options as it meets this week to set rates⁵.

The composition matters for how persistent the print proves. Motor fuel is the driver, with those prices up by almost a quarter¹, and the Bank has no instrument that reaches an oil supply shock². August’s acceleration took the rate to its highest level since March, which means the cooler run earlier in the year has broken⁴. A five-month high is the framing that follows the committee into its meeting^3,5.

Positioning has already moved. Financial markets predict a one-in-five chance of a quarter-point rise when the Bank decides on Thursday¹. The currency read was less supportive: sterling fell after the data, and one analysis argued the figures make the market’s rich bet on Bank of England rate hikes look overdone⁶.

What to watch

Thursday’s decision is the event, and the split between a market pricing only a modest chance of a move and commentators arguing the Bank is boxed in is where the risk sits^1,5. A hold would leave inflation running well above target, while a move would tighten into fuel-driven price growth the Bank does not control^2,4.

The second variable is oil itself. The rise has been attributed to disruption of global oil supplies from the Middle East conflict, so the path of crude, rather than domestic demand, is what will decide whether the next print falls back^2,7. Sterling’s reaction to the decision will show whether the market’s rate expectations are repriced again⁶.