UK inflation hits 3.1% in August as fuel costs surge amid Middle East tensions

The UK's consumer price index (CPI) rose to 3.1% year-on-year in August 2026, up from 2.9% in July, according to data released by the Office for National Statistics (ONS). The acceleration marks the highest inflation rate in five months and exceeds the Bank of England's 2% target. Transport costs, particularly motor fuel, drove the increase, with petrol prices reaching their highest level in nearly four years at 161.3p per litre—a 9.1p rise from July. Diesel prices also surged sharply. Overall, motor fuel prices rose 23% compared to August 2025. On a monthly basis, CPI increased 0.5% in August, compared with 0.3% in the same month last year. Higher airfares, particularly for long-haul journeys during the peak summer travel season, contributed to the acceleration alongside fuel costs.

The surge in fuel and energy costs is linked to ongoing Middle East tensions and disruptions to global oil supplies. Oil prices have climbed significantly, with Brent crude surpassing $100 a barrel in recent days—up from around $73 before hostilities escalated earlier in 2026. The ONS noted that rising crude oil prices increased both the annual cost of raw materials and the price of goods leaving factories. Core CPI, which excludes volatile food and energy items, remained unchanged at 2.6% year-on-year, suggesting that broader price pressures outside energy remain contained.

Economists warn of further inflation increases ahead. Paul Dales, UK chief economist at Capital Economics, forecasts CPI will rise to approximately 3.6% in September and peak at around 4.2% in January 2027 as businesses pass on higher energy costs to consumers and the immediate effects of elevated oil and gas prices feed through the supply chain. The British Chambers of Commerce (BCC) similarly expects CPI to rise further in coming months, driven by oil price volatility and Middle East conflict, with the potential for higher domestic food costs. However, Capital Economics noted that higher oil prices have not yet spilled over into food and drink inflation, which remained at 1.3%.

The Bank of England's monetary policy committee is meeting on Thursday (17 September) to decide on interest rates, which currently stand at 3.75%. Most analysts expect the committee to hold rates steady despite the rise in inflation, though some economists now express nervousness about whether further hikes may be necessary in the coming months. Financial markets are already pricing in multiple interest rate rises by the end of 2027, with expectations ranging from four to five quarter-point increases that could lift Bank Rate to 4.75% or higher. UK government bond yields have fallen slightly, suggesting markets are moderating concerns about the inflation outlook given that core inflation remains subdued.

The cost pressures are being felt across the economy. A petrol station owner in Essex told the BBC that business is down approximately 20% compared with the previous year due to volatile oil prices and thin profit margins on fuel sales. Households already struggling with cost-of-living pressures face renewed financial strain, with research from the Money Advice Trust indicating that 46% of people supported by National Debtline lack sufficient funds to cover essential bills each month, and two in five are behind on energy bills. Business confidence is also affected, with a BCC survey of nearly 5,000 firms showing that 66% cited inflation as their main concern. Prime Minister Andy Burnham acknowledged inflation as "a concern" but stated the underlying UK economy remains resilient, noting that economic growth expanded by 0.4% in July, boosted partly by investment in artificial intelligence. The government is preparing an Autumn Budget scheduled for 28 October, with both businesses and households looking to the budget for measures to ease cost-of-living pressures.